# AZL vs OpenDurian

The clearest difference is in-app purchases: AZL at none against OpenDurian's 10. OpenDurian's advantage is update cadence (every 4 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. OpenDurian sells 10 one-off in-app purchases. AZL asks for nothing beyond the download.

AZL ships an update every 3 weeks, OpenDurian every 4 days. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | AZL | OpenDurian |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Free | — |
| Size | 228 MB | 95 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Conicle](https://appshunter.io/developer/979282578) | [OpenDurian](https://appshunter.io/developer/919058398) |

## What reviewers say

### AZL

[App page](https://appshunter.io/ios/app/azl/id6470053958)

This application facilitates online learning, offering a convenient and comfortable experience. It promotes unlimited learning opportunities, allowing users to study anytime and anywhere.

**Highlights:** Online learning, Convenient study, Comfortable experience, Unlimited learning, Learn anywhere, Learn anytime

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

**In-app purchases:** none

**What reviewers complain about**

- 💥 Frequent app crashes
- ⏳ Wastes a lot of time
- 🔄 Requires repeated training
- 😩 Constant login/re-login
- 📸 Excessive identity verification

**Reported bugs**

- App crashes frequently
- App freezes
- Black screen during video playback
- Progress resets after crashes
- Login/password reset issues

**Requested features**

- Improve app stability
- Optimize identity verification frequency
- Allow playback speed adjustment
- Enable content skipping
- Save progress automatically


### OpenDurian

[App page](https://appshunter.io/ios/app/opendurian/id6748681576)

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Book Expo  Conver พูดมันส์ | $3.99 | one-time |
| Book Expo  Conver พูดมันส์ 1 | $3.99 | one-time |
| Book Expo  Converพูดมันส์ | $3.99 | one-time |
| Book Expo  ปีศาจตัวนั้น 2 | $4.99 | one-time |
| Book Expo  IELTS CheatSheet | $4.99 | one-time |
| Book Expo  หนังสือ 500 Vocab | $5.99 | one-time |
| Book Expo  500 Vocab Grab & G | $5.99 | one-time |
| Book Expo  สมุดจำจีน HSK5 | $9.99 | one-time |
| Book Expo  สมุดจำจีน HSK4 | $11.99 | one-time |
| Book Expo  SET สมุดจำจีน Box | $22.99 | one-time |


## Frequently asked questions

### Is AZL free?

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

### Is OpenDurian free?

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

### Do AZL or OpenDurian have ads?

Neither AZL nor OpenDurian shows ads.

### Which is updated more often, AZL or OpenDurian?

AZL ships an update every 3 weeks, and OpenDurian every 4 days. Most recently, AZL was updated on October 21, 2026 and OpenDurian on October 24, 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.*