Legal
Mettle Strength Terms of Use
Effective: September 24, 2026
Mettle Strength is provided by Steven Kuo. By downloading or using the app, you agree to Apple’s Standard Licensed Application End User License Agreement and the subscription information below. Contact [email protected] with questions about Mettle.
Mettle Pro subscription
Mettle’s training features require an active Mettle Pro subscription. The app may offer monthly and annual auto-renewable subscription options through Apple’s in-app purchase system. Eligible new subscribers may receive an introductory free trial or promotional offer where shown. The price, billing period, trial eligibility, and terms displayed in the app and Apple’s purchase sheet at the time you subscribe apply to your purchase. Unless canceled, the subscription automatically renews at the then-applicable price at the end of each billing period.
You can manage or cancel your subscription in your Apple Account subscription settings. Canceling stops future renewal; access continues for the remainder of the active entitlement period, as determined by Apple. Restore Purchases is available in the app. Apple handles billing and refund requests under its applicable policies.
Using the app
Mettle helps you organize and record strength workouts. You are responsible for choosing exercises and loads appropriate for you. Mettle does not provide medical advice or replace advice from a qualified professional. Stop an activity that causes pain or other concerning symptoms and seek appropriate advice.
Updates and availability
We may improve or change Mettle over time. Features require a compatible device and may depend on Apple subscription services. Training data stored locally on a device may be lost if the app or device is removed or reset without an available backup.
Privacy and contact
See our Privacy Policy for information about data handling. For app support, email [email protected] or visit Support.