# 3-Day Habit — Korean Habit Bingo · 작심삼일

> Korean Habit Bingo · 작심삼일 (iPhone/iPad app by Taewon Ha.)

- Source: https://appshunter.io/ios/app/3-day-habit/id6764519766 (this page in markdown: same URL + `.md`)
- Developer: [Taewon Ha](https://appshunter.io/developer/1894750142)
- Category: Productivity, Health & Fitness
- Price: Free
- Age rating: 4+
- Requires: iOS 26.4 · 1 MB
- Languages: American English, Korean
- Released: 2026-04-29
- Data updated: 2026-10-06

## What is 3?

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!

## Is 3 safe?

Not enough ratings yet to assess 3.

## Is 3 legit?

3-Day Habit has limited verification signals. The AppsHunter Legitimacy Score for 3 is 48 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.1 — 2026-04-30

English language support added — now in US, UK, CA, AU, NZ, IE
Sammi the tiger goes global!

### 1.0 — 2026-04-29

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-06.*