I built a screen time blocker that has no account, no server, and no idea who you are

Short summary

A developer built SproutGuard, a privacy-first iOS screen time blocker with no account, no server, and zero network calls, using Apple's Screen Time API (FamilyControls, ManagedSettings, DeviceActivity). The API's opaque tokens make privacy structurally guaranteed rather than policy-based. The app uses daily streaks to make blocking stick beyond day three, and deliberately avoids hard-lock mechanisms to respect user autonomy.

• •Built SproutGuard using Apple's Screen Time API with zero backend infrastructure
• •Privacy is structurally enforced: opaque tokens mean no app-usage data can be collected or leaked
• •Streak-based habit tracking is the key mechanism for long-term adoption

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