Legal
Last updated: April 2026
Not a medical product. Fitness Tracker is a personal informational tool. It does not provide medical advice, diagnosis, or treatment, and it is not a substitute for a licensed physician, dietitian, therapist, or trainer. See the No Medical or Professional Advice clause below.
By accessing or using Fitness Tracker (“the Service”), you agree to these terms and our Privacy Policy. If you do not agree, do not use the Service.
IMPORTANT. These terms contain a binding arbitration agreement and class-action waiver in Section 17 that governs how disputes between you and us are resolved. Please read Section 17 carefully before using the Service.
Fitness Tracker is a personal health logging and informational tool provided as-is, for personal use only. It is not a medical service, a telehealth provider, a fitness coaching business, a dietetics practice, or any other regulated professional service, and it does not provide medical advice, diagnosis, treatment, prescription, prognosis, nutritional counseling, psychological counseling, personal training, financial advice, or legal advice.
Nothing displayed in the Service — including but not limited to dashboard content, insights, celebrations, scores, charts, challenges, notes, summaries, recommendations, alerts, chat messages, or advisor persona responses — constitutes medical advice, diagnosis, or treatment, nor does it constitute nutritional, psychological, training, coaching, legal, or financial advice.
The Service is for your personal informational purposes only. Always seek the advice of a qualified licensed professional (such as a physician, registered dietitian, licensed therapist, certified trainer, attorney, or financial advisor) with any questions you may have regarding a medical condition, dietary change, exercise program, mental health concern, or other personal decision. Never disregard professional advice or delay seeking it because of something you read or saw in the Service.
If you think you may be experiencing a medical emergency, call your local emergency number or go to the nearest emergency room immediately. Do not use the Service for emergency situations.
The Service includes AI-powered chat functionality and optional named “advisor” or “specialist” personas (for example, coaches, physios, nutritionists, longevity advisors, biohackers, bodybuilders, and similar characters). These personas are fictional characters backed by large language models. They are not licensed medical, health, fitness, nutrition, mental health, legal, or financial professionals, regardless of the titles, credentials, or personalities they may present. Any apparent credentials in a persona's name, description, or responses are part of a fictional character, not a representation of a real licensed individual.
AI chat responses may be incomplete, incorrect, biased, outdated, or inconsistent. Large language models can produce confident-sounding information that is wrong (“hallucinations”), and the Service makes no guarantee that any AI output is accurate, appropriate, or safe for your individual circumstances. Do not rely on AI responses for any decision that carries real-world consequences without independent verification from a qualified professional.
The Service includes features that suggest, challenge, or encourage physical activity (including but not limited to “Rex's Challenge,” suggested personal records, streaks, celebrations, and goal tracking). These features are automated suggestions generated from your logged data and are not personalized training programs. You are solely responsible for deciding whether any suggested activity is safe and appropriate for you. Do not attempt any exercise, load, or training intensity that exceeds your current ability, health status, or experience level. Stop any activity immediately if you experience pain, dizziness, shortness of breath, chest discomfort, or any other symptom that concerns you.
You create an account using either Google Sign-In or Sign in with Apple. We collect your email address, display name, and (from Google) profile image as described in our Privacy Policy. If you use Sign in with Apple with “Hide My Email,” we receive only the private-relay address Apple generates. By creating an account, you agree to receive service-related communications (account notifications, security alerts) and promotional communications (product updates, health content, offers) at the email address associated with your account. You may opt out of promotional communications at any time via the unsubscribe link in any promotional email.
Fitness Tracker is a health passport built for you. As a statement of principle, and as a binding term of this agreement: (i) you own the health and fitness data you enter; (ii) we do not share your personal or health data with any third party except as strictly necessary to operate the services you have chosen to use, or as required by law; (iii) you can disconnect any third-party integration at any time from the Settings page; (iv) you can download a complete copy of your data at any time via Export All My Data at the bottom of the Settings page; and (v) you can delete your account and associated data at any time via Delete Account at the bottom of the Settings page, subject to the limited retention exceptions described in our Privacy Policy. Further detail on the categories of data we collect, how we use it, and the rights you hold is in the Privacy Policy.
The Service supports optional integrations with third-party products and APIs, including but not limited to Apple Health (HealthKit), Fitbit, Oura, Google, Anthropic (Claude), OpenAI (ChatGPT / Custom GPT), and Google Gemini. Each integration is off by default, is enabled only when you authorize it, and can be disabled at any time from the Settings page. When you enable an integration, you authorize the Service to exchange data with that third party on your behalf under that third party's own terms and privacy policy. The Service is not responsible for the availability, accuracy, behavior, or data-handling practices of any third party, and an integration may be modified, disabled, or broken by the third party at any time without notice.
If you use an AI integration such as Claude, ChatGPT, Gemini, or a Custom GPT to log or analyze data, the content of your messages and the related context will be processed by that third-party provider under its own data-handling practices, which we do not control. We endeavor to protect that content to the extent possible (minimum-necessary data, enterprise/API-tier contracts that restrict model training where available), but you should not share information in AI chats that you are not comfortable being processed by the underlying provider.
If you enable the Apple Health / HealthKit integration, we handle HealthKit data subject to Apple's HealthKit requirements: we use HealthKit data only to improve your health, fitness, and wellness experience within this Service; we do not use HealthKit data for advertising, marketing, or data-mining purposes; we do not sell HealthKit data to advertising platforms, data brokers, or information resellers; we do not disclose HealthKit data to any third party for that third party's own purposes; we do not store HealthKit data in iCloud; and we do not write back to HealthKit any data other than data you produce using this Service. You may revoke HealthKit access at any time through iOS Settings > Health > Data Access & Devices or by disabling the integration from within the app.
You are solely responsible for any information, descriptions, notes, health data, photos, files, or other content you submit to the Service. You represent that you have the right to submit that content and that it does not violate any law or the rights of any other person. Do not submit information about anyone other than yourself, and do not submit anything you would not be comfortable having stored on the Service indefinitely.
The Service is intended for adults aged 18 or older. You may not create an account, submit data, or otherwise use the Service if you are under 18. We do not knowingly collect or process data from minors.
The Service is provided “as is” and “as available” without any warranty of any kind, express or implied, including without limitation the implied warranties of merchantability, fitness for a particular purpose, non-infringement, or accuracy. We make no representations about the accuracy, reliability, completeness, timeliness, safety, or suitability of any data, insight, AI response, suggestion, or challenge displayed by the Service.
To the fullest extent permitted by law, Fitness Tracker and its operators, contributors, and affiliates shall not be liable for any direct, indirect, incidental, special, consequential, punitive, or exemplary damages whatsoever arising out of or in connection with your use of the Service, including but not limited to personal injury, loss of data, unauthorized access to your data, service interruptions, third-party integration failures, AI output errors, reliance on any suggestion or challenge generated by the Service, or any other harm resulting from storing personal or health information on this platform or acting on any information you see here.
Physical activity, dietary change, supplementation, and health experimentation carry inherent risks including but not limited to injury, illness, and death. By using the Service, you acknowledge those risks and accept full and sole responsibility for any decision you make based on content you encounter here. You agree to indemnify and hold harmless Fitness Tracker and its operators from any claim, loss, or liability arising from your use of the Service or any action you take based on its content.
You are solely responsible for any data you submit. While we commit to the reasonable security measures described in our Privacy Policy, we do not guarantee that your data will be stored permanently or without loss, and you should maintain your own backups of any information you consider important. You may delete your account and associated data at any time via Delete Account at the bottom of the Settings page, or by contacting us.
If you obtain the Service through the Apple App Store, the following additional terms apply, and — as between you, Apple, and us — control to the extent of any conflict with the rest of this agreement:
PLEASE READ CAREFULLY. THIS SECTION AFFECTS YOUR LEGAL RIGHTS. IT REQUIRES YOU TO RESOLVE MOST DISPUTES WITH US THROUGH INDIVIDUAL BINDING ARBITRATION, AND WAIVES YOUR RIGHT TO A JURY TRIAL AND YOUR RIGHT TO PARTICIPATE IN A CLASS ACTION OR CLASS ARBITRATION.
17.1 Agreement to Arbitrate. You and Fitness Tracker agree that any dispute, claim, or controversy between us arising out of or relating to the Service, these Terms, or the Privacy Policy — whether sounding in contract, tort, statute, fraud, misrepresentation, or any other legal theory — shall be resolved by final and binding individual arbitration, except for the limited carve-outs set forth below. This Section is governed by the Federal Arbitration Act, 9 U.S.C. §§ 1 et seq.
17.2 Class-Action Waiver. You and Fitness Tracker each waive the right to bring or participate in any class action, class arbitration, collective action, mass action, or representative proceeding. Any arbitration will be conducted solely on an individual basis. The arbitrator may not consolidate the claims of more than one person without the consent of all affected parties.
17.3 Arbitrator Selection and Rules. Arbitration will be administered by the American Arbitration Association (AAA) under its Consumer Arbitration Rules then in effect, available at www.adr.org. A single neutral arbitrator will be selected in accordance with those rules, which provide for neutral selection from a list of qualified arbitrators proposed by AAA with strike rights for both parties. If AAA declines to administer the arbitration, the parties will agree on a comparable neutral administrator; if they cannot agree, a court of competent jurisdiction sitting in Suffolk County, Massachusetts may appoint one.
17.4 Fees and Location. AAA filing, administration, and arbitrator fees will be allocated as provided in the AAA Consumer Arbitration Rules, which cap consumer-side fees. Unless the parties agree otherwise, arbitration will take place by videoconference or telephone, or — at your election — in person in Suffolk County, Massachusetts or in the federal judicial district where you reside.
17.5 Small-Claims Carve-Out. Either party may bring an individual action in a small-claims court of competent jurisdiction in lieu of arbitration, so long as the claim remains in that court and is not removed or appealed to a court of general jurisdiction.
17.6 Injunctive-Relief Carve-Out. Notwithstanding this Section, Fitness Tracker may seek injunctive, declaratory, or other equitable relief in a court of competent jurisdiction to protect its intellectual property, confidential information, or the security or integrity of the Service, and to enjoin unauthorized use or access, without first submitting the matter to arbitration.
17.7 Governing Law and Venue. These Terms and any dispute arising under them are governed by the laws of the Commonwealth of Massachusetts, without regard to conflict-of-laws principles. The parties consent to the exclusive jurisdiction of the state and federal courts located in Suffolk County, Massachusetts for any action (a) to compel arbitration or enforce an arbitration award, (b) falling within a carve-out above, or (c) otherwise not subject to arbitration. This choice of law and venue does not deprive you of the protection of any mandatory provision of consumer-protection law that would otherwise apply in your jurisdiction of residence.
17.8 Severability. If any provision of this Section is held unenforceable, that provision shall be severed and the remainder shall remain in effect; provided, however, that if the class-action waiver in Section 17.2 is held unenforceable as to any particular claim, the entirety of this Section shall be null and void solely as to that claim, and that claim shall be resolved in court in accordance with Section 17.7 (but all other claims shall remain subject to arbitration).
17.9 Survival. This Section survives termination of your account and termination of these Terms.
We may update these terms from time to time. If we make a material change — one that meaningfully narrows your rights, expands your obligations, or changes the nature of the Service — we will provide reasonable advance notice (by email to the address on file, by an in-app notice, or both) before the change takes effect. Non-material updates (wording, clarifications, structural changes) may be made by updating the date at the top of this page. Continued use of the Service after the change takes effect constitutes acceptance of the updated terms.