# C vs Libry

The clearest difference is update cadence: C at every 3 weeks against Libry's every 2 months. C also leads on review sentiment (25% vs 12%) and iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

C ships an update every 3 weeks, Libry every 2 months. The most recent releases landed on September 6, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | C | Libry |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **25.0% of reviews** | 11.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 52 MB | 105 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Netman. Co.,Ltd.](https://appshunter.io/developer/1097455605) | [Libry Inc.](https://appshunter.io/developer/1031867351) |

## What reviewers say

### C

[App page](https://appshunter.io/ios/app/c-learning-for-student/id1097455606)

This learning management system client allows students and employees to access educational materials, take quizzes, and participate in collaborative projects. It supports domain switching for different organizations and offers features for registering lectures and answering surveys.

**Highlights:** Domain switching for organizations, Lecture registration, Survey and quiz participation, Material browsing and sharing, Collaborative image/video uploads

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

**In-app purchases:** none


### Libry

[App page](https://appshunter.io/ios/app/libry/id1147557530)

Transform your physical study materials into digital interactive lessons. This app analyzes your learning patterns to recommend challenging and forgettable questions, offering personalized study support. It allows you to search for specific problems and track your progress.

**Highlights:** Digital textbook viewer, Review forgotten questions, Practice difficult questions, Search problems by keyword, Track favorite and incorrect answers, Learning history

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is C free?

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

### Is Libry free?

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

### Do C or Libry have ads?

Neither C nor Libry shows ads.

### Which is updated more often, C or Libry?

C ships an update every 3 weeks, and Libry every 2 months. Most recently, C was updated on September 6, 2026 and Libry on September 21, 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.*