Last updated: June 2026
Short version: Use Gainfully honestly, pay for Pro if you want Pro features, and don't do anything that harms other users or the service. These terms are governed by Danish law.
By downloading, installing, or using the Gainfully application ("the App", "the Service"), you agree to be bound by these Terms of Service ("Terms"). If you do not agree to these Terms, do not use the App.
These Terms constitute a legally binding agreement between you and Jesper Kildahl, the individual operating Gainfully ("we", "us", "our"), registered in Denmark.
Gainfully is a fitness tracking application that allows users to log workouts, track progress, create training programmes, and access AI-powered coaching. The App is available on iOS and Android.
We reserve the right to modify, suspend, or discontinue the Service or any feature at any time, with or without notice. We will not be liable to you or any third party for any modification, suspension, or discontinuation.
To use Gainfully, you must create an account with a valid email address. You are responsible for:
You must be at least 13 years old to use the App. By creating an account, you represent that you meet this age requirement.
Gainfully offers a free tier with limited features and a paid Pro subscription with full access to all features, including AI coaching and unlimited training programmes.
All subscriptions are billed through Apple App Store or Google Play Store. Payments are processed by Apple or Google — we do not store any payment card information. Subscription management, including cancellation, is handled via your App Store or Google Play account settings.
Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current billing period. We do not offer refunds for unused portions of a subscription period, except as required by applicable law or as determined by Apple or Google's refund policies.
The AI coaching feature is powered by Anthropic's Claude API. AI-generated responses are for informational and motivational purposes only. They do not constitute medical advice, diagnosis, or treatment.
Always consult a qualified healthcare professional before starting any new exercise programme, particularly if you have a pre-existing medical condition or injury. We are not liable for any injury or harm resulting from following AI-generated training advice.
You agree not to use the Service to:
We reserve the right to suspend or terminate your account immediately if we determine you have violated these Terms.
You retain ownership of any content you create within the App — including workout logs, training programmes, and AI conversations ("User Content"). By using the App, you grant us a limited licence to store and process your User Content solely for the purpose of providing the Service to you.
We do not sell your User Content or share it with third parties, except as described in our Privacy Policy.
The Gainfully name, logo, app design, exercise library content, and all related intellectual property are owned by Jesper Kildahl. You may not use, copy, or reproduce any of these without our prior written consent.
THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
We do not warrant that the Service will be uninterrupted, error-free, or free of viruses or other harmful components. We do not warrant the accuracy or completeness of any content in the App.
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, WE SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING BUT NOT LIMITED TO LOSS OF DATA, LOSS OF PROFITS, OR PERSONAL INJURY, ARISING OUT OF OR RELATED TO YOUR USE OF THE SERVICE.
OUR TOTAL LIABILITY TO YOU FOR ANY CLAIM ARISING FROM THESE TERMS OR YOUR USE OF THE SERVICE SHALL NOT EXCEED THE AMOUNT YOU PAID US IN THE 12 MONTHS PRECEDING THE CLAIM.
You may delete your account at any time from within the App (Profile → Delete Account). Upon deletion, all your data will be permanently removed within 30 days.
We may suspend or terminate your account at any time for violation of these Terms. Upon termination, your right to use the Service ceases immediately.
These Terms are governed by and construed in accordance with the laws of Denmark, without regard to conflict of law principles. Any disputes arising from these Terms or your use of the Service shall be subject to the exclusive jurisdiction of the courts of Denmark.
If you are a consumer in the EU/EEA, you may also have rights under your local consumer protection laws that cannot be waived by these Terms. The EU Online Dispute Resolution platform is available at ec.europa.eu/consumers/odr.
We may update these Terms from time to time. We will notify you of material changes via the App or by email at least 14 days before they take effect. The "last updated" date at the top of this page reflects the most recent revision. Your continued use of the App after changes take effect constitutes acceptance of the updated Terms.
For any questions about these Terms, please contact us at:
support@gainfully.app