3-Day Habit

Just 3 days, want to try?

Pick 3 habits. Stamp once a day. Fill a row "Three-day curse" beat!

A tiny 3×3 bingo card. Done in 5 seconds a day.

The average user abandons a habit-tracking app in 11 days."

30-day, 60-day challenges feel too long before you even start. So in Korea we have a saying: 작심삼일 (jak-sim-sam-il) your resolve lasts only 3 days. It's actually a useful insight: 3 days is the threshold.

3 Habits × 3 Days = 9-cell bingo

3-Day Habit is the smallest habit tracker.

• Pick 3 habits to challenge (e.g., 2L of water, exercise, reading) • Stamp one cell each day for 3 days • Fill a row → "Three-day curse beat!"

After 3 days, take 1 day off, then start a fresh cycle. Short bursts, repeated wins.

Core Features

• 3×3 bingo board for visual progress • One-tap stamp (5 seconds, then done) • Tiger mascot "Sammi" cheering you on • New card auto-issued each cycle • 12-week calendar of all your stamps • Full house = fireworks + tiger celebration • 100% free, no ads (v1.0) • 100% local data no servers, no tracking

Why 3-Day Habit?

• Under 1 minute a day zero friction • Filling a row = same habit 3 days straight = beating the three-day curse • Streaks carry across cycles Day 4 is auto-counted • Tracks total active days + total wins • Made in Korea, designed for everyone

Meet Sammi

Sammi the tiger greets you each day and stamps along with you. Hit a full house and Sammi sets off fireworks.

How It Works

1. Open the app, enter 3 habits (or pick from suggestions)
2. Stamp one cell per day on the bingo board
3. Complete a row (one habit, 3 days) → "Three-day curse beat!"
4. Fill all 9, full house + tiger celebration
5. Day 4 = rest day, next cycle starts automatically

v1.1 Notes

• Completely free, no ads • Korean + English supported • iOS 17+ required • All data stored locally • Cycle: 3 challenge days + 1 rest day

Coming Soon

• Daily reminder notifications • More mascot packs (panda bun, rice cake, bear cub) • Theme packs (traditional Korean, mint, midnight) • Friend 1:1 bingo duels • Lock screen + home screen widgets

Contact: Cuenoteapp@gmail.com

The three-day curse? You crushed it!