ProductivityNew techTop 33% of today's analysed ideas

Honor-system pushup app blocker for phones

Build a lightweight honor-system screen time blocker that gates distracting apps behind a quick task (pushups, a typed pledge, a breathing exercise) without requiring camera-based motion tracking. Target it at people who already use pushup-to-unlock apps but find camera tracking embarrassing or unreliable in public, selling via a simple one-time purchase or low-cost subscription on iOS and Android.

via Hacker News

Original post

What to build

A mobile app blocker for iOS/Android that gates distracting apps behind a quick honor-system task (pushups, a typed pledge, or a breathing exercise) instead of camera-based motion tracking.

There's room for a lighter, honor-system alternative to camera-tracked pushup-unlock blockers, aimed at users who want friction without the embarrassment or unreliability of motion detection.

Demand

People already using pushup-to-unlock apps but annoyed by camera tracking in public are the core audience, and the Show HN launch suggests early interest in a no-camera variant right now.

Hacker NewsNews
Show HN: Honorfit – a pushup app blocker for your phone — 5 points, 4 comments. Poster says: "Hey yall! I needed a way to cap my own phone use so do..."

Stack

React Native
Expo
iOS Screen Time API (Family Controls / DeviceActivity)
Android UsageStatsManager / AccessibilityService
RevenueCat
Supabase

Solo + AI difficulty

The honor-system task UI and app-blocking screen are straightforward to ship with AI assistance in a few weeks, but reliably hooking into iOS Screen Time APIs and Android's accessibility/usage-stats permissions for real app-blocking is the hard, fiddly part and will eat most of the timeline; expect 4-6 weeks to a usable MVP for one person.

Entry threshold: Very low barrier: no camera/ML tracking needed, just app-blocking APIs (iOS Screen Time API, Android UsageStats/AccessibilityService) and a simple unlock flow, buildable solo with AI coding tools in one to two weeks.
Window: 3-6 months

Where to find first users

Show HN
Product Hunt launch
r/productivity
r/getdisciplined

Competitors

Counter-signals & risks

Removing camera-based verification eliminates the accountability mechanism that makes pushup-unlock apps effective, potentially reducing the product's core value proposition to users who want enforced discipline, not an honor system.
Low score (0.42) and 'none' historical match suggest weak signal strength and no comparable precedent validating demand for this specific niche.
Screen time blocker market is crowded with free/built-in alternatives (iOS Screen Time, Android Digital Wellbeing), making it hard to justify a paid one-time purchase or subscription for a simple honor-system gate.
App blocker category has low switching costs and high churn, as users may disable or uninstall self-imposed restriction apps once motivation fades.

Original title: Show HN: Honorfit – a pushup app blocker for your phone

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Demand
5/10
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Buildability
8/10
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Competition
6/10
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33 competitors
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Demand
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Buildability
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Competition
6/10
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33 competitors