Build a privacy-first mobile product that selectively hides or interrupts designated feeds inside supported apps while leaving messaging, search, subscriptions, calls, and chosen content available. Pair granular controls with named schedules, notification suppression, local-only configuration, and a tightly limited emergency-access workflow. Start with a small set of high-demand feeds and publish device-specific reliability guarantees rather than offering broad but fragile blocking.

Short-form feeds are spreading across otherwise useful communication and media apps, making whole-app blocking increasingly impractical. Multiple recent reviews request selective blocking, while reports of unreliable timers and broken allowlists reveal room for a focused product built around enforcement reliability.