# mozaBook vs ESLflex Mobile App

The clearest difference is in-app purchases: ESLflex Mobile App at none against mozaBook's 4. ESLflex Mobile App also leads on iOS requirement (10.0 vs 15.0). mozaBook's advantage is update cadence (fortnightly vs every 5 weeks). On price, ads and device support there is nothing between them.

Both are free to download. mozaBook sells 4 one-off in-app purchases. ESLflex Mobile App asks for nothing beyond the download.

mozaBook ships an update fortnightly, ESLflex Mobile App every 5 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | mozaBook | ESLflex Mobile App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (25 ratings)](https://appshunter.io/ios/app/mozabook/id1142227993/reviews)** | — |
| Number of ratings | **25** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 30 MB | 81 MB |
| Requires iOS | 15.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [MOZAIK Education Ltd.](https://appshunter.io/developer/1064850236) | [WELA.ONLINE CORP.](https://appshunter.io/developer/1621972441) |

## What reviewers say

### mozaBook

[App page](https://appshunter.io/ios/app/mozabook/id1142227993)

This app allows students to view interactive class content and digital textbooks sent by their teachers. It facilitates participation in classwork, assignment completion, and submission of answers directly through the application. Connect to interactive whiteboards and explore digital learning materials with ease.

**Highlights:** View interactive class content, Explore digital textbooks, Participate in classwork, Complete and submit assignments, Connect to teacher's interactive board, Access built-in extras

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mozaik STUDENT (1 year) | $34.99 | one-time |
| Mozaik STUDENT (2 years) | $59.99 | one-time |
| Mozaik TEACHER (1 year) | $89.99 | one-time |
| Mozaik TEACHER (2 years) | $179.99 | one-time |


### ESLflex Mobile App

[App page](https://appshunter.io/ios/app/eslflex-mobile-app/id6478920267)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is mozaBook free?

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

### Is ESLflex Mobile App free?

ESLflex Mobile App is free to download, with no in-app purchases.

### Do mozaBook or ESLflex Mobile App have ads?

Neither mozaBook nor ESLflex Mobile App shows ads.

### Which is updated more often, mozaBook or ESLflex Mobile App?

mozaBook ships an update fortnightly, and ESLflex Mobile App every 5 weeks. Most recently, mozaBook was updated on October 24, 2026 and ESLflex Mobile App on October 25, 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.*