Terms of Use

These Terms of Use (the “Terms”) are a binding agreement between you and FRIIO. They govern your use of the Halt mobile application and its subscriptions, and they are the end-user license agreement (EULA) of the app. Please read them carefully.

Last updated: 22 September 2026

Important. Halt is not a medical device and does not give medical advice (section 5). Paid plans renew automatically until you cancel (section 8). If you live in the United States, section 20 requires you to resolve disputes with us through individual binding arbitration and waives class actions and jury trials, unless you opt out within 30 days. Section 20 does not apply to consumers in the European Union, the European Economic Area, the United Kingdom or Switzerland.

1. About these Terms

Halt is published by FRIIO, a French SASU with a share capital of 250 euros, registered with the Rouen Trade and Companies Register under number 105 203 152, VAT number FR83105203152, whose registered office is at 72 Quai Cavelier de la Salle, 76100 Rouen, France (“FRIIO”, “we”, “us”). Contact: friio.iocontact@gmail.com.

These Terms work together with our Privacy Policy, which explains how we handle your data, and with the terms of the app store you use. If these Terms conflict with the terms of an app store about the purchase itself, the store's terms prevail for that purchase.

2. Acceptance

You accept these Terms when you create your Halt account, whichever sign-up option you use (email, Apple or Google), and each time you sign in, as stated on the account screen. If you do not agree with them, do not create an account and do not use Halt.

3. Eligibility and your account

You must be at least 18 years old and have reached the age of legal majority where you live, if it is higher. By creating an account, you confirm that you meet this requirement.
You must not be barred from using Halt under the laws that apply to you.
Your account is personal: one account per person, not shared and not transferable. Give accurate information, keep your password confidential and tell us promptly at friio.iocontact@gmail.com if you think someone else has used your account. You are responsible for what happens under your account, except where it results from our own fault.

4. What Halt is

Halt lets you photograph your head with guided scans, follow the visible appearance of your hair over time with a 3D model and estimated measurements, organize routines with reminders, and read general information. Its intended purpose is personal, non-medical tracking of the appearance of your hair and of your habits. An account is required to use it.

5. Not medical advice, not a medical device

Halt is not a medical device. It is not intended to diagnose, prevent, monitor, predict, give a prognosis for, treat or alleviate any disease or condition, including any form of alopecia, and it does not provide medical advice, diagnosis or treatment.
The content of the app is general information. It may not be complete, may not fit your situation and may not reflect the latest research.
Consult a doctor or a dermatologist before starting, changing or stopping any treatment, if you notice sudden, patchy or unusual hair loss, and whenever the app suggests that a professional opinion is worthwhile. Never disregard professional advice or delay seeking it because of something you read or saw in Halt. In an emergency, contact your local emergency services.
Halt does not sell, prescribe or recommend prescription medicines. When the app mentions a treatment, it is general information to discuss with your doctor. Treatments you record in the app are your own notes.

6. Estimates, and no guaranteed results

Measurements, scores, 3D models and comparisons are estimates. They depend on lighting, camera, angle, hair length, styling and other factors, and they may be inaccurate. Use them only to compare your own scans with each other.
Hair loss varies from person to person. Halt does not promise and cannot guarantee that your hair loss will stop, slow down or reverse, or that any hair will grow back. A goal or a plan shown in the app is an objective you set for yourself, not a promise of a result. Results from any product, routine or treatment vary.

7. Your license to use Halt

Subject to these Terms, FRIIO grants you a personal, limited, non-exclusive, non-transferable, non-sublicensable and revocable license to download and use the Halt app on devices that you own or control, for your own private and non-commercial use, in accordance with these Terms and the rules of the app store you downloaded it from. This license ends automatically if your account is closed or if you breach these Terms. All rights not expressly granted to you are reserved.

You may not copy, modify, distribute, sell, rent or sublicense the app; decompile, disassemble or reverse engineer it, except to the extent the law expressly allows it despite this restriction; bypass its security, paywall or technical limits; access it with bots, scrapers or other automated means; use it to build a competing product; or use it to provide services to others (for example, scanning clients in a salon or clinic) without our prior written agreement.

8. Subscriptions, free trials and purchases

Paid features. Some or all features of Halt require a paid subscription or a one-time purchase (“Halt Pro”). What each plan includes, its price and its billing period are shown in the app before you buy.
Billing by the store. Purchases are processed by Apple (App Store) or Google (Google Play) under their terms. Payment is charged to your store account when you confirm the purchase.
Automatic renewal. Subscriptions (weekly, monthly, annual or any other period shown in the app) renew automatically at the end of each period, for the same period and at the price then in force, unless you cancel at least 24 hours before the end of the current period. Your store account is charged for the renewal within the 24 hours before the end of the current period.
Free trials. When a free trial is offered, it converts automatically into a paid subscription at the price shown when you started it, unless you cancel at least 24 hours before the trial ends. Trials are limited to one per person under the store's eligibility rules. If you buy a subscription during a trial, any unused part of the trial ends. If notifications are enabled, the app also reminds you on your device before the trial ends; this reminder is a courtesy, and cancelling in time remains your responsibility.
How to cancel. Manage and cancel your subscription in your store account settings (on iPhone: Settings, then your name, then Subscriptions; on Android: Google Play, then Payments and subscriptions, then Subscriptions). Deleting the app or your Halt account does not cancel your subscription. Cancellation takes effect at the end of the current period, and you keep access until then.
Lifetime purchase. A lifetime purchase is a one-time payment that gives access to the features included in Halt Pro for as long as we make Halt available (the lifetime of the service), and not for the lifetime of any person or for any fixed period. It is personal and non-transferable. If we decide to discontinue Halt, we will give you at least 60 days' notice in the app, except where this is impossible for reasons beyond our control. Where mandatory consumer law gives you a right to a partial refund in that case, you keep it.
Prices. Prices are shown in the app in your local currency and include the taxes determined by the store where applicable. We may change our prices. A new price applies to an existing subscription only from the next renewal after you have been notified in advance by us or by the store, and, where the store requires it, only if you accept it. If you do not agree with a new price, cancel before the renewal.
Refunds. Payments are final and non-refundable, except where applicable law requires a refund, or where Apple or Google grants one under its own refund policy. Refund requests are handled by the store (Apple: reportaproblem.apple.com; Google: the Google Play refund process). We cannot issue App Store refunds ourselves.
Right of withdrawal (EU, EEA and UK consumers). You may have a 14-day right of withdrawal for online purchases. It is exercised with the store you bought from, under its procedures. When you buy, you ask us to give you access to the paid features immediately. To the extent the law allows, you acknowledge that you lose your right of withdrawal once the supply of digital content has started, or that you may have to pay for the service provided until you withdraw.
Restoring purchases. Your purchase is tied to your store account and linked to your Halt account. Use “Restore purchases” in the app if it does not appear.
Special offers. Discounts and promotional offers are subject to the conditions displayed with them.

9. Your content

“Your content” means the photos, scans, answers, notes and other data you add to Halt. It remains yours.
You grant FRIIO a worldwide, non-exclusive, royalty-free license to host, store, copy, process, transmit and display your content solely to operate, provide, secure and support Halt for you, including making backups, for as long as your content remains in our systems. This license ends when your content is deleted, subject to the limited backup retention described in the Privacy Policy.
We do not use your content for any other purpose: no advertising, and no use of your identifiable photos to train models without your separate opt-in consent. We may create anonymous statistics that cannot identify you, as described in the Privacy Policy.
You confirm that you have the right to use the content you add, that the photos you take are of yourself, and that your content does not break the law or anyone's rights.
If you send us ideas or suggestions, we may use them freely, without any obligation to you.

10. Acceptable use

You agree not to:

use Halt for anyone other than yourself, or scan another person, in particular a minor;
add unlawful, infringing, sexual or offensive content;
try to access other users' data or accounts, probe or test the vulnerability of our systems, or bypass any security measure or paywall;
disrupt or overload the service, or introduce malicious code;
resell, share or sublicense access to Halt or to your account;
use Halt to diagnose or treat others or to provide professional services;
use Halt in breach of the law, including export control and sanctions laws.

11. Our intellectual property

The app, the name and logo Halt, its software, 3D models, designs, texts, databases and all other elements (except your content) belong to FRIIO or its licensors and are protected by intellectual property laws. Open-source components are used under their own licenses, listed in the app. Nothing in these Terms transfers any of these rights to you, other than the license in section 7.

12. Third-party services and partner links

Halt may show links to websites or products of third parties, such as retailers. We do not control them and are not responsible for their content, products, availability, prices or practices. Any purchase you make is between you and the retailer, under its terms.
Products shown in Halt are general information and not a recommendation for your particular situation. Read the label and the precautions, and ask a doctor or pharmacist if in doubt.
Some links are partner links: we may earn a commission when you buy through them, at no extra cost to you. As an Amazon Associate, FRIIO earns from qualifying purchases. Commissions never influence what the app recommends.
Signing in with Apple or Google is subject to their own terms.

13. Changes to Halt and availability

We improve Halt continuously. We may add, change or remove features for valid reasons, such as technical or security needs, legal requirements or the evolution of the product. Some updates may be required to keep using the app.
If a change significantly reduces a paid feature you are paying for, we will tell you in advance. If you are a consumer in the EU, EEA, UK or Switzerland, you may then end your contract free of charge within 30 days, and you are entitled to a refund of the unused part of any prepaid period where the law provides for it.
Halt requires an internet connection and a compatible device. We do our best to keep it available, but we do not guarantee that it will be uninterrupted or error-free, in particular during maintenance.

14. Disclaimer of warranties

This section does not apply to consumers in the EU, EEA, UK or Switzerland (see section 17).

TO THE FULLEST EXTENT PERMITTED BY LAW, HALT IS PROVIDED “AS IS” AND “AS AVAILABLE”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, NON-INFRINGEMENT OR ACCURACY. WE DO NOT WARRANT THAT MEASUREMENTS ARE ACCURATE, THAT HALT WILL PRODUCE ANY RESULT, OR THAT THE SERVICE WILL BE UNINTERRUPTED, SECURE OR ERROR-FREE. Some jurisdictions do not allow the exclusion of certain warranties; in that case, these exclusions apply only to the extent permitted, and any consumer guarantee that cannot be excluded (for example under the Australian Consumer Law) is not affected.

15. Limitation of liability

This section does not apply to consumers in the EU, EEA, UK or Switzerland (see section 17).

TO THE FULLEST EXTENT PERMITTED BY LAW: (A) FRIIO WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY OR PUNITIVE DAMAGES, OR FOR ANY LOSS OF PROFITS, REVENUE, DATA OR GOODWILL, ARISING OUT OF OR RELATED TO HALT OR THESE TERMS; AND (B) FRIIO'S TOTAL LIABILITY FOR ALL CLAIMS ARISING OUT OF OR RELATED TO HALT OR THESE TERMS WILL NOT EXCEED THE GREATER OF THE AMOUNTS YOU PAID FOR HALT IN THE 12 MONTHS BEFORE THE EVENT GIVING RISE TO THE CLAIM, OR 50 US DOLLARS (OR THE EQUIVALENT IN YOUR CURRENCY).

Nothing in these Terms limits or excludes our liability for death or personal injury caused by our negligence, for fraud or fraudulent misrepresentation, for gross negligence or willful misconduct, or for any other liability that cannot be limited or excluded under applicable law. These limitations reflect a reasonable allocation of risk and are an essential basis of our agreement.

16. Indemnity

This section does not apply to consumers in the EU, EEA, UK or Switzerland.

To the extent permitted by law, you agree to defend, indemnify and hold harmless FRIIO and its officers against any third-party claim, and the resulting losses and reasonable legal fees, arising out of your breach of these Terms, your violation of the law or of the rights of others (for example, scanning a person without their consent), or your content, except to the extent caused by our own fault. We will tell you about any such claim, we may control its defense, and you agree to cooperate with us.

17. Consumers in the EU, EEA, UK and Switzerland

If you are a consumer residing in one of these countries, sections 14, 15 and 16 do not apply to you. Instead:

We are liable in accordance with the law for damage caused by our breach of these Terms. We are responsible for loss or damage that is a foreseeable result of our breach or of our failure to use reasonable care and skill, and not for loss or damage that is not foreseeable.
Halt is for private use only: we are not liable to you for any business loss, such as loss of profit or business opportunity.
Where the law of your country allows it (for example in Germany or Austria), our liability for slight negligence is limited to the breach of essential contractual obligations and to typical, foreseeable damage. This limitation does not apply to damage resulting from injury to life, body or health, or to liability under product liability law.
Nothing in these Terms affects your statutory rights, including the legal guarantee of conformity for digital content and digital services (in France, articles L. 224-25-12 and following of the Consumer Code). If Halt does not conform, you may ask us to bring it into conformity and, where the law provides for it, obtain a price reduction or end the contract.

18. Suspension and termination

You can stop using Halt at any time and delete your account from the app (Settings, then Account, then Delete account). This does not cancel a store subscription: see section 8.
We may suspend or close your account, after notice and, where reasonable, an opportunity to fix the problem, if you seriously breach these Terms (for example: fraud, a security attack, illegal use, or if you are under 18). We may act immediately if the breach is serious and urgent, or if the law or an authority requires it.
We may also close your account for any other valid reason with at least 30 days' notice.
If we close your account for a reason other than your breach, we will refund, or ask the store to refund, the unused part of any prepaid period.
When your account is closed, your license ends and your data is deleted as described in the Privacy Policy. Sections which by their nature should survive (including 5, 6, 9 to 11, 14 to 17, 20, 21 and 24) survive termination.

19. Changes to these Terms

We may change these Terms for valid reasons, such as changes in the law or in regulatory guidance, new features, security needs, clarifications or changes in our business. We will notify you of any material change at least 30 days before it takes effect, in the app or by email, unless a shorter period is required by law or the change is only in your favor. If you do not agree, you may stop using Halt and delete your account before the change takes effect, and cancel your subscription. If you keep using Halt after the effective date, you accept the new Terms, except where the law requires your express consent, in which case we will ask for it. A change to section 20 does not apply to a dispute of which you or we had given notice before the change.

20. Dispute resolution for US users: arbitration and class action waiver

This section applies only if you reside in the United States. It does not apply to consumers residing in the EU, EEA, UK or Switzerland, or elsewhere outside the United States. Please read it carefully: it affects your rights.

20.1 Informal resolution first

Before starting an arbitration or a small claims case, you and we agree to try to resolve the dispute informally for 60 days. The party raising the dispute sends a written notice to the other (to us at friio.iocontact@gmail.com; to you at the email address of your account) with the name and account email of the person concerned, a description of the dispute and the relief sought. If either party asks, we will hold an individual video or phone conference in good faith, which you attend personally. Limitation periods are suspended during these 60 days. This informal process is a condition before starting arbitration.

20.2 Agreement to arbitrate

You and FRIIO agree that any dispute, claim or controversy arising out of or relating to these Terms, Halt, your data, your purchases or our relationship, whether based on contract, tort, statute (including privacy and biometric laws), fraud or any other legal theory, will be resolved exclusively by final and binding individual arbitration, except as provided in section 20.3. The arbitrator decides all issues, including the scope, applicability and enforceability of this agreement to arbitrate, except that a court decides issues relating to section 20.6 (class action waiver) and 20.7 (mass arbitration). The Federal Arbitration Act governs this section 20.

20.3 Exceptions

Either party may bring an individual claim in small claims court, if the claim qualifies and remains there.
Either party may ask a court for an injunction to stop the infringement or misuse of its intellectual property rights.
Where the law does not allow a waiver of public injunctive relief (for example in California), a claim for such relief will be decided by a court, after the arbitration of all individual claims, and is stayed until then.

20.4 Rules and procedure

The arbitration is administered by the American Arbitration Association (AAA) under its Consumer Arbitration Rules and, where they apply, its Mass Arbitration Supplementary Rules, in effect when the arbitration is filed (available at adr.org), as modified by this section. If the AAA is unavailable, the parties will agree on another provider, or a court will appoint one. A single arbitrator decides. Hearings take place by video or phone, or in the county where you live if the arbitrator decides that an in-person hearing is necessary. If your claim is for 10,000 US dollars or less, it will be decided on the basis of written submissions unless the arbitrator decides otherwise. The arbitrator may award the same individual remedies as a court, but only in favor of the individual party seeking relief and only to the extent necessary for that party's individual claim. The award is written and reasoned, and judgment on it may be entered in any competent court.

20.5 Costs

Payment of filing, administration and arbitrator fees is governed by the AAA rules, under which FRIIO pays the business's share. If your claim is for 10,000 US dollars or less and is not frivolous, we will reimburse your filing fee. Each party bears its own attorneys' fees, unless the law or the arbitrator provides otherwise, including where a claim is found frivolous or brought for an improper purpose.

20.6 Class action and jury trial waiver

You and FRIIO may bring claims against each other only in an individual capacity, and not as a plaintiff or class member in any purported class, collective, consolidated or representative proceeding. The arbitrator may not consolidate the claims of more than one person, except as provided in section 20.7, and may not preside over any form of class or representative proceeding. If a court finds this waiver unenforceable for a particular claim, that claim alone is severed and decided by a court, after the individual arbitration of all other claims, and never in arbitration on a class basis. To the extent permitted by law, you and FRIIO waive any right to a jury trial.

20.7 Mass arbitration

If 25 or more similar demands for arbitration are filed against or by FRIIO by the same or coordinated counsel or organizations, the AAA Mass Arbitration Supplementary Rules apply, and the demands are handled in stages: counsel for the claimants and FRIIO each select 10 demands to proceed first; the remaining demands are not considered filed, and no fees are due for them, until those 20 are resolved; the parties then take part in a global mediation in good faith for 60 days; if the remaining demands are not resolved, they proceed in batches of up to 100. Limitation periods are suspended for demands waiting in this process. The outcome of one demand is not binding on another. A court may enforce this section.

20.8 Your right to opt out

You may opt out of this agreement to arbitrate within 30 days after you first accept these Terms, by sending an email to friio.iocontact@gmail.com with the subject “Arbitration Opt-Out”, from the email address of your account, stating your name and your decision to opt out. If we make a material change to this section, you may opt out of the change within 30 days after it takes effect. Opting out does not affect the rest of these Terms. If you opt out, disputes are resolved in court as described in section 21.

20.9 Time limit

To the extent permitted by law, any claim must be brought within one year after it arises, or it is permanently barred.

20.10 Severability

If any part of this section 20 is found unenforceable, the rest of it still applies, except as provided in section 20.6. If this agreement to arbitrate as a whole is found unenforceable, disputes are resolved in court as described in section 21.

20.11 California users

Under California Civil Code Section 1789.3, California users are entitled to the following notice: the Complaint Assistance Unit of the Division of Consumer Services of the California Department of Consumer Affairs may be contacted in writing at 1625 North Market Blvd., Suite N 112, Sacramento, CA 95834, or by telephone at (916) 445-1254 or (800) 952-5210.

21. Governing law, courts and mediation

These Terms, and any non-contractual obligation arising from them, are governed by French law, excluding its conflict-of-law rules and the United Nations Convention on Contracts for the International Sale of Goods. Section 20 is governed by the US Federal Arbitration Act.
If you are a consumer, this choice of law does not deprive you of the protection of the mandatory provisions of the law of the country, or US state, where you habitually reside.
Subject to section 20, disputes are submitted to the competent courts of Rouen, France. If you are a consumer residing in the EU, EEA, UK or Switzerland, you may also bring proceedings in the courts of the place where you live, and we may bring proceedings against you only in those courts.
Consumer mediation. If you are a consumer and a dispute remains after a written complaint to us, you may refer it, free of charge, to the consumer mediator to which FRIIO belongs: [name, address and website of the consumer mediator: to be completed]. A mediator cannot examine a dispute that is manifestly unfounded or abusive, that has already been examined by another mediator or a court, or that is submitted more than one year after your written complaint to us.
We always prefer to settle disagreements directly: most issues are solved by writing to friio.iocontact@gmail.com.

22. Additional terms for the Apple App Store

If you downloaded Halt from the Apple App Store, the following also applies:

These Terms are concluded between you and FRIIO only, and not with Apple Inc. (“Apple”). FRIIO, not Apple, is solely responsible for Halt and its content.
Your license to use Halt is limited to a non-transferable license to use it on any Apple-branded products that you own or control, as permitted by the Usage Rules set out in the Apple Media Services Terms and Conditions, except that Halt may be accessed and used by other accounts associated with you through Family Sharing or volume purchasing where available.
FRIIO is solely responsible for providing any maintenance and support services for Halt. Apple has no obligation whatsoever to furnish any maintenance and support services with respect to Halt.
FRIIO is solely responsible for any product warranties, whether express or implied by law, to the extent not effectively disclaimed. If Halt fails to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price, if any, for Halt to you. To the maximum extent permitted by applicable law, Apple has no other warranty obligation whatsoever with respect to Halt, and any other claims, losses, liabilities, damages, costs or expenses attributable to any failure to conform to any warranty are FRIIO's sole responsibility, to the extent not disclaimed in these Terms.
FRIIO, not Apple, is responsible for addressing any claims by you or any third party relating to Halt or your possession and use of it, including: (i) product liability claims; (ii) any claim that Halt fails to conform to any applicable legal or regulatory requirement; and (iii) claims arising under consumer protection, privacy or similar legislation.
In the event of any third-party claim that Halt or your possession and use of it infringes that third party's intellectual property rights, FRIIO, not Apple, is solely responsible for the investigation, defense, settlement and discharge of that claim.
You represent and warrant that (i) you are not located in a country that is subject to a US Government embargo, or that has been designated by the US Government as a “terrorist supporting” country; and (ii) you are not listed on any US Government list of prohibited or restricted parties.
Questions, complaints or claims about Halt should be sent to FRIIO, 72 Quai Cavelier de la Salle, 76100 Rouen, France, friio.iocontact@gmail.com.
You must comply with applicable third-party terms of agreement when using Halt (for example, your mobile data service agreement).
Apple and Apple's subsidiaries are third-party beneficiaries of these Terms, and, upon your acceptance of these Terms, Apple will have the right (and will be deemed to have accepted the right) to enforce these Terms against you as a third-party beneficiary.

23. Google Play

If you downloaded Halt from Google Play, your purchase is also subject to the Google Play Terms of Service. Google is not a party to these Terms and is not responsible for Halt.

24. General

Entire agreement. These Terms, the Privacy Policy and any conditions displayed with an offer form the entire agreement between you and FRIIO about Halt.
Severability. If a provision is found invalid or unenforceable, it is limited to the minimum extent necessary and the rest of the Terms remains in force, subject to section 20.6.
No waiver. Not enforcing a provision does not mean giving up the right to enforce it later.
Transfer. We may transfer these Terms to a company that takes over all or part of Halt, for example in a merger, acquisition or sale of assets, provided that this does not reduce your rights or guarantees. You may not transfer your rights under these Terms.
Force majeure. Neither party is liable for a failure caused by events beyond its reasonable control, within the meaning of article 1218 of the French Civil Code or the equivalent law that applies.
Notices. We may send you notices in the app or at the email address of your account. You can reach us at friio.iocontact@gmail.com. You agree that electronic communications satisfy any requirement that a communication be in writing.
Export control. You must comply with applicable export control and sanctions laws when using Halt.
US Government users. Halt is “commercial computer software” provided to US Government users only with the rights granted to all other users under these Terms.
Language. A French translation of these Terms is available at friio.io/halt/fr/terms. If the versions differ, the English version prevails, except where the law of your country requires a version in your language to prevail (for example, for consumers in France).

25. Contact

FRIIO, 72 Quai Cavelier de la Salle, 76100 Rouen, France. Email: friio.iocontact@gmail.com.