# Deen vs 66 Challenge

The clearest difference is in-app purchases: Deen at none against 66 Challenge's 3. Deen also leads on ratings volume (1.9K vs 5). 66 Challenge's advantage is update cadence (every 5 days vs every 3 weeks) and iOS requirement (13.0 vs 15.6). On price, rating, ads and device support there is nothing between them.

Both are free to download. 66 Challenge sells 3 in-app purchases, starting at $3.99 per month. Deen asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Deen against 5.0 for 66 Challenge. That said, the two scores are not equally well evidenced: Deen has 1.9K ratings behind it against 5, so its average is the more settled of the two.

Deen ships an update every 3 weeks, 66 Challenge every 5 days. The most recent releases landed on November 12, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Deen | 66 Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (1.9K ratings)](https://appshunter.io/ios/app/deen-islamic-app/id1617532276/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/66-challenge/id6758270405/reviews)** |
| Number of ratings | **1.9K** | 5 |
| Positive reviews | 97.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | **Free** | Freemium |
| Size | 246 MB | 18 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Mahedi Hasan](https://appshunter.io/developer/1617532278) | [Moad Ghajjate El Fal](https://appshunter.io/developer/1871890791) |

## What reviewers say

### Deen

[App page](https://appshunter.io/ios/app/deen-islamic-app/id1617532276)

This comprehensive Islamic app offers prayer times, Quran recitation with memorization tools, Hadith, Duas, and a Qibla compass. It also includes a Zakat calculator, Hijri calendar, and a community forum for Muslims worldwide.

**Highlights:** Accurate Prayer Times, Quran Memorizer (Hifz Tracker), Audio Quran Recitation, Authentic Hadith Collection, Qibla Direction Compass, Zakat Calculator, Hijri Calendar

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🙏 Excellent Islamic app
- 👍 User-friendly interface
- 🕋 Comprehensive Islamic resources
- 🕰️ Accurate prayer times and reminders
- 📚 Wide selection of Islamic books and content

**What reviewers complain about**

- 🕰️ Inaccurate prayer time calculations for some locations
- 🔇 Lack of Adhan (call to prayer) feature
- 🔍 Limited search functionality within the app

**Reported bugs**

- Occasional crashes or freezes on certain devices
- Inconsistencies in Quran verse numbering or translations

**Requested features**

- Add Adhan feature with customizable sounds
- Improve prayer time accuracy with user-adjustable settings
- Implement a more robust search engine for Quran, Hadith, and other content
- Add widgets for quick access to prayer times and other features
- Introduce a prayer and fasting tracker


### 66 Challenge

[App page](https://appshunter.io/ios/app/66-challenge/id6758270405)

Build lasting habits with a science-backed system designed to guide you through a 66-day journey. Track daily progress, visualize your transformation, and stay motivated with social features and achievements. Transform your life one habit at a time.

**Highlights:** Daily habit tracking, Progress visualization, Streak protection, Social feed and squads, Customizable reminders, Achievement badges

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $3.99 | per month |
| Pro Annual | $29.99 | per year |
| Pro Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Deen free?

Deen is free to download, with no in-app purchases.

### Is 66 Challenge free?

66 Challenge is free to download, with in-app purchases available.

### Which has better reviews, Deen or 66 Challenge?

66 Challenge is rated higher. Deen averages 4.9 out of 5 from 1.9K ratings, while 66 Challenge averages 5.0 from 5 ratings.

### Do Deen or 66 Challenge have ads?

Neither Deen nor 66 Challenge shows ads.

### Which is updated more often, Deen or 66 Challenge?

Deen ships an update every 3 weeks, and 66 Challenge every 5 days. Most recently, Deen was updated on November 12, 2026 and 66 Challenge on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*