Last updated: August 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 or using Gainfully ("the App", "the Service"), you agree to these Terms of Service ("Terms"). If you do not agree, do not use the App.
These Terms are a binding agreement between you and Jesper Larsen, the individual operating Gainfully ("we", "us", "our"), registered in Denmark.
Gainfully is a fitness tracking app for logging workouts, tracking progress, creating training programmes, and accessing AI-powered coaching. Available on iOS and Android.
We may modify or discontinue any feature at any time. We will try to give reasonable notice for significant changes.
You need an account to use Gainfully. You are responsible for:
You must be at least 13 years old to use the App.
Gainfully has a free tier and a paid Pro subscription:
Subscriptions are billed through Apple App Store or Google Play. We do not store payment card information. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the billing period. Refunds are handled by Apple or Google according to their policies.
The AI trainer is powered by Anthropic's Claude API. Its responses are for informational and motivational purposes only and do not constitute medical advice.
Consult a healthcare professional before starting any new exercise programme, especially if you have an existing condition or injury. We are not liable for any harm resulting from following AI-generated advice.
You agree not to:
Violations may result in immediate suspension or termination of your account.
You own the content you create in the App: workout logs, training programmes, and AI conversations. By using the App, you give us a limited licence to store and process that content solely to provide the Service to you.
We do not sell your content or share it with third parties beyond what is described in our Privacy Policy.
The Gainfully name, logo, app design, and exercise library content are owned by Jesper Larsen. You may not use, copy, or reproduce any of these without prior written consent.
The Service is provided as-is and as-available. We make no warranties, express or implied, including warranties of merchantability, fitness for a particular purpose, or uninterrupted availability.
We do not guarantee that the App will be error-free or that its content is always accurate or complete.
To the extent permitted by law, we are not liable for indirect, incidental, or consequential damages arising from your use of the Service, including loss of data, loss of profits, or personal injury.
Our total liability for any claim related to these Terms is limited to the amount you paid us in the 12 months before the claim arose.
You can delete your account at any time from within the App (Profile → Delete Account). All your data will be permanently removed within 30 days.
We may suspend or terminate your account for violations of these Terms. Your right to use the Service ends immediately upon termination.
These Terms are governed by the laws of Denmark. Disputes are subject to the exclusive jurisdiction of Danish courts.
If you are a consumer in the EU/EEA, you may also have rights under local consumer protection law that these Terms cannot override. The EU Online Dispute Resolution platform is available at ec.europa.eu/consumers/odr.
If we make significant changes, we will notify you via the App or by email at least 14 days before they take effect. The "last updated" date at the top always shows the most recent revision.