Prism Forge is licensed through the App Store under Apple's Standard Licensed Application End User License Agreement.
Prism Forge is a one-time paid download. The app contains no subscriptions, in-app purchases, advertising, account system, or paid virtual items.
The game is designed to work offline. Progress and settings are stored on the device. Deleting the app deletes its local save unless that data is restored through an Apple-managed device backup.
Questions can be sent to prismforge-support@calimanu.com. Only include details you are comfortable sharing.