# 21 Days – AI Challenge — AI-powered challenge tracker

> AI-powered challenge tracker (iPhone/iPad app by ahmet celik.)

- Source: https://appshunter.io/ios/app/21-days-ai-challenge/id6754599969 (this page in markdown: same URL + `.md`)
- Developer: [ahmet celik](https://appshunter.io/developer/1832321636)
- Category: Lifestyle, Productivity
- Price: $0.29 (on sale, was $2.49)
- Age rating: 4+
- Requires: iOS 13.0 · 27 MB
- Languages: American English
- Released: 2025-10-30
- Data updated: 2026-08-27
- User reviews in markdown: https://appshunter.io/ios/app/21-days-ai-challenge/id6754599969/reviews.md

## What is 21 Days?

21 Days – AI Challenge helps you build habits that last.
Log a short note each day for 21 days. At the end, our AI analyzes your journey and gives you a personalized summary with insights and tips.

 Features:
	•	Daily notes to track your progress
	•	AI-generated analysis after 21 days
	•	100 unique badges to unlock
	•	Dark mode & customizable themes
	•	Simple stats to keep you motivated

Stay consistent for 21 days and see the difference. Your future self will thank you.


## Version history (last 2 releases)

### 1.0.3 — 2026-01-07

- Added banner and interstitial ads
- Added a one-time "Remove Ads" in-app purchase ($1.99)
- Bug fixes and performance improvements

### 1.0 — 2025-10-30

No release notes.

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## More apps by ahmet celik

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- [Candle – Focus & Pomodoro](https://appshunter.io/ios/app/candle-focus-and-pomodoro/id6752386499)
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- [fairsplitly](https://appshunter.io/ios/app/fairsplitly/id6754804847)

All apps by ahmet celik: https://appshunter.io/developer/1832321636

## Related topics

[ce21](https://appshunter.io/ios/topics/ce21) · [21 days](https://appshunter.io/ios/topics/21-days)

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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 2026-08-27.*