Terms of use

Draft · last updated 3 November 2026

These terms apply when you use the Stren app. By using the app you agree to them. Please also read our privacy policy.

The app

Stren helps you track your strength training. The basics are free. Some features are part ofStren Pro, a paid subscription or one-time purchase.

Training and health

Stren does not give medical advice. Programs, weight suggestions and calculations such as an estimated 1RM are tools, not prescriptions. Train within your own limits and see a doctor if you have doubts about your health. You train at your own risk.

Your account and your data

You can use the app without an account. With an account we sync your data between your devices. Your data stays yours: you can always export it and delete your account with all data in the app. Keep your sign-in details to yourself.

Subscriptions and purchases

• Payment goes through your Apple ID or Google account. You see the price in the app before you buy.
• A subscription renews automatically unless you cancel at least 24 hours before the end of the period.
• You cancel in the subscription settings of the App Store or Google Play. You keep Pro until the end of the paid period.
• If you have a free trial, payment starts when it ends unless you cancel earlier.
• Refunds are handled by Apple or Google under their rules.

Fair use

Do not use the app to disrupt the service, get around security or harm others. We may use feedback you send to improve the app.

Availability and liability

We do our best to keep Stren working well and safely, but we cannot promise the app is always free of errors or available. So export a backup now and then. To the extent the law allows, we are not liable for indirect damage or loss of data.

Changes

We may update these terms. For important changes we let you know in the app. The date at the top shows when they were last updated.

Contact

Questions? Email siebe-vaes@live.nl.