Terms of Use

Last updated: 26 August 2026

These terms govern your use of the Rackfuel iPhone application ("the App"). By downloading or using the App you agree to them. If you do not agree, do not use the App.

1. What Rackfuel is, and is not

Rackfuel is a tool for logging food and training and for estimating energy targets from the data you provide. It is not a medical device, does not provide medical, dietetic or health advice, and is not a substitute for advice from a qualified professional. Estimates are estimates: nutritional values, calorie targets and expenditure figures carry uncertainty, and the App tells you when its confidence is low. Do not rely on the App for any medical purpose.

2. Suitability

You must be at least 13 years old to use the App. Calorie restriction is not appropriate for everyone. The App refuses targets below a safety floor and will not aim at an underweight goal weight, but these safeguards are not a substitute for professional judgement. If you have, or have had, an eating disorder or any condition affected by diet or exercise, consult a professional before using the App.

3. Subscriptions

• Rackfuel Pro is an optional auto-renewing yearly subscription purchased through the App Store.
• Payment is charged to your Apple account at confirmation of purchase. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period.
• You can manage or cancel the subscription in your Apple account settings at any time. Refunds are handled by Apple under Apple's terms.
• The core features of the App remain free. Pro features and the current price are stated in the App before any purchase.

4. Fair use

Photo meal estimation is subject to usage limits, stated in the App, to keep the service viable. We may adjust limits to prevent abuse. Attempting to circumvent limits, reverse engineer the App, or use the estimation service outside the App is not permitted.

5. Your data

Your logs are stored on your device and belong to you. Our handling of data is described in the Privacy Policy. You are responsible for device backups; if you delete the App or your data within it, we cannot recover it.

6. Availability

We aim to keep the App and the estimation service available and accurate, but they are provided "as is" and "as available", without warranties of any kind to the fullest extent permitted by law. Features may change between versions.

7. Liability

Nothing in these terms excludes liability that cannot be excluded by law, including for death or personal injury caused by negligence. Subject to that, we are not liable for indirect or consequential loss, and our total liability arising from the App is limited to the amount you paid for it in the twelve months before the claim arose.

8. Intellectual property

The App, its design, artwork and content are protected by copyright and other rights. The bundled exercise and food databases include open data attributed within the App. You may not copy, distribute or create derivative works from the App except as permitted by law.

9. Changes to these terms

If we change these terms materially, the App or this page will say so before the change takes effect. Continuing to use the App after a change takes effect means you accept the revised terms.

10. Governing law

These terms are governed by the law of England and Wales, and the courts of England and Wales have exclusive jurisdiction, except where the law of your country of residence provides otherwise.