# Protocol66

> 66-day habit challenge. Miss a day, start over.

- **Website**: https://apps.apple.com/us/app/protocol66/id6757076988
- **Uneed Page**: https://www.uneed.best/tool/protocol66
- **Pricing**: Paid
- **Category**: Personal Life
- **Tags**: Productivity, Health, iOS
- **Submitted by**: @moritztucher-b085
- **Launch Date**: 2026-03-24

## About

A 66-day habit challenge based on research, not bro culture. Pick 5 daily habits. Complete them for 66 days. Miss a day, restart from Day 1. Why 66? Research shows habits take 66 days to become automatic — not 21, not 75. Choose from 8 categories: Move, Mind, Fuel, Hydrate, Reflect, Sleep, Connect, Create. Optional rest days. Friends + leaderboard for accountability. Not another gentle reminder app. Real challenge, real consequences. $4.99 lifetime. No subscription.