Mosaic - Habit Tracker
Habit tracking with widgets and an Apple Watch app, all local to your device.
Eleven focused iOS apps, two Android apps, and a few free web tools — designed, built, and shipped by one person. Most of them work entirely on your device: no accounts, no ad SDKs, no data leaving your phone unless you choose to send it somewhere.
iOS apps publish under Lav Chaudhary on the App Store. Android apps and web tools publish under QOL Apps on Google Play and at qolapps.org.
Featured
The full lineup — every iOS app, Android app, and web tool — lives on the apps page.
Habit tracking with widgets and an Apple Watch app, all local to your device.
iOS
A Screen Time app blocker with schedules, Strict Mode, and streaks.
iOS
Clean metadata, redact private details, and audit photos on-device.
How I build
On-device processing over servers whenever the job allows it. No data collected that a feature doesn't strictly need. Every app links its privacy policy from its own page — never buried.
Writing
A practical way to turn AI into a research partner for pain points, distribution, pricing, and early product judgment.
The common failure mode is treating agents as magic interns instead of opinionated collaborators that need context, taste, and tests.
A grounded mental model for using AI to extend attention, accelerate drafts, and challenge weak plans without outsourcing your judgment.
Vibe coding can be fast, fun, and surprisingly productive, but only when you know where the vibes end and engineering begins.
Directory
Existing app URLs and privacy policy URLs never move — they're linked to live App Store and Play Store listings.