# mb4reader vs Zachet

The clearest difference is review sentiment: Zachet at 86% against mb4reader's 12%. Zachet also leads on rating (4.5 vs 2.3) and update cadence (every 4 days vs fortnightly). mb4reader's advantage is in-app purchases (none vs 4) and iOS requirement (8.2 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Zachet sells 4 in-app purchases, starting at $17.99 per month. mb4reader asks for nothing beyond the download.

Zachet holds the better App Store score, 4.5 against 2.3. That said, the two scores are not equally well evidenced: Zachet has 51 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 12% of mb4reader's written reviews are positive against 86% of Zachet's.

mb4reader ships an update fortnightly, Zachet every 4 days. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | mb4reader | Zachet |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (4 ratings)](https://appshunter.io/ios/app/mb4reader/id1250475927/reviews) | **[4.5 (51 ratings)](https://appshunter.io/ios/app/zachet-ai-study-assistant/id6804271331/reviews)** |
| Number of ratings | 4 | **51** |
| Positive reviews | 11.8% of reviews | **85.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | **Free** | Freemium |
| Size | 10 MB | 68 MB |
| Requires iOS | **8.2** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [IPUZ, OOO](https://appshunter.io/developer/1250475926) | [Aleksei Miagkov](https://appshunter.io/developer/6804271333) |

## What reviewers say

### mb4reader

[App page](https://appshunter.io/ios/app/mb4reader/id1250475927)

This application facilitates offline reading of electronic publications from various online library systems. It provides access to educational materials without requiring a constant internet connection.

**Highlights:** Offline reading, Access to student libraries, Access to medical libraries, Supports multiple online library systems, No internet required for reading

**In-app purchases:** none


### Zachet

[App page](https://appshunter.io/ios/app/zachet-ai-study-assistant/id6804271331)

Transform lectures, articles, and documents into study aids like summaries, flashcards, quizzes, mind maps, and podcasts. Engage with your notes through an AI tutor and export materials for sharing. Available across devices with multi-language support.

**Highlights:** Summaries from audio, links, photos, and PDFs, AI-generated flashcards and quizzes, Mind map creation, Podcast summaries for on-the-go listening, AI chat and voice mode tutor, Export to PDF and DOCX, Cross-device synchronization

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ПРО на месяц | $17.99 | per month |
| Про тариф на год | $109.99 | per year |
| Voice assistant for a week | $9.99 | one-time |
| Voice assistant for a month | $29.99 | one-time |


## Frequently asked questions

### Is mb4reader free?

mb4reader is free to download, with no in-app purchases.

### Is Zachet free?

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

### Which has better reviews, mb4reader or Zachet?

Zachet is rated higher. mb4reader averages 2.3 out of 5 from 4 ratings, while Zachet averages 4.5 from 51 ratings.

### Do mb4reader or Zachet have ads?

Neither mb4reader nor Zachet shows ads.

### Which is updated more often, mb4reader or Zachet?

mb4reader ships an update fortnightly, and Zachet every 4 days. Most recently, mb4reader was updated on November 6, 2026 and Zachet on November 8, 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.*