Precursor: Hourly Screen Time

Precursor is a productivity app for iOS that enables users to set hourly app time limits, resetting allowances at the top of each hour to prevent daily overuse and impulsive bypassing of limits. It supports customizable groups of apps, schedules, multiple limit modes, and a Deep Focus mode with emergency breaks. The app emphasizes privacy by using on-device data and no accounts. It offers a free version and a paid subscription with extended features.