Terms of Service

Last updated: 17 September 2026

The service

Physics Zen is an independent physics practice app. It generates problems and solutions on the device for personal, non-commercial study. It is not official exam material and is not affiliated with College Board, any examination board, the IQB or the French Ministry of Education.

Purchases

The complete Kinematics topic is free. In every other topic the last skill is Premium, along with exam paths and detailed statistics. Premium is offered as a subscription and as a lifetime purchase. Prices are shown in the App Store or Google Play in local currency before you buy. We do not list prices on this site because they vary by storefront.

Purchases go through the Apple App Store or Google Play and are subject to the terms of the store you bought from. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel them in your App Store or Google Play account settings.

Content

Problems are generated algorithmically. We work to keep statements and solutions accurate, but we cannot guarantee that every generated item is error-free.

Contact

Questions about these terms: contacts@trifoiltrailblazer.com.