# cMate vs DjVu Reader & Viewer

The clearest difference is review sentiment: cMate at 100% against DjVu Reader & Viewer's 25%. cMate also leads on in-app purchases (none vs 2) and update cadence (every 5 weeks vs every 4 months). DjVu Reader & Viewer's advantage is price (Free vs $2.99). On ads and device support there is nothing between them.

DjVu Reader & Viewer is free to download; cMate costs $2.99 up front. DjVu Reader & Viewer sells 2 in-app purchases, starting at $2.99 per 7 days. cMate asks for nothing beyond the download.

cMate ships an update every 5 weeks, DjVu Reader & Viewer every 4 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | cMate | DjVu Reader & Viewer |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[4.2 (75 ratings)](https://appshunter.io/ios/app/djvu-reader-and-viewer/id6746808694/reviews)** |
| Number of ratings | — | **75** |
| Positive reviews | **100.0% of reviews** | 25.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 4 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 8 MB | 35 MB |
| Requires iOS | **10.0** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [Maxim Lukyanenko](https://appshunter.io/developer/1496252741) | [Yassir Hrout](https://appshunter.io/developer/1813458400) |

## What reviewers say

### cMate

[App page](https://appshunter.io/ios/app/cmate-smcp-imo-phrases/id1497209844)

This app provides essential IMO phrases for seafarers and maritime students. It offers standardized navigational and safety communications in four languages to ensure clear and unambiguous interactions at sea.

**Highlights:** IMO phrases for seafarers, Four language support, Navigational and safety communications, Standardized maritime language, Clear and unambiguous communication

**Features:** macOS Compatibility

**In-app purchases:** none


### DjVu Reader & Viewer

[App page](https://appshunter.io/ios/app/djvu-reader-and-viewer/id6746808694)

This app offers a modern and elegant way to read DjVu documents on iOS devices. It features high-quality rendering, a smart document tracking system, and a clean interface optimized for technical and academic material.

**Highlights:** High-quality DjVu rendering, Smart document tracking, Clean, intuitive interface, Dark/White mode options, Powerful search capabilities, Optimized performance for large documents

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $2.99 | per 7 days |
| Lifetime Plan | $5.99 | one-time |


## Frequently asked questions

### Is cMate free?

cMate costs $2.99, with no in-app purchases.

### Is DjVu Reader & Viewer free?

DjVu Reader & Viewer is free to download, with in-app purchases available.

### Do cMate or DjVu Reader & Viewer have ads?

Neither cMate nor DjVu Reader & Viewer shows ads.

### Which is updated more often, cMate or DjVu Reader & Viewer?

cMate ships an update every 5 weeks, and DjVu Reader & Viewer every 4 months. Most recently, cMate was updated on November 3, 2026 and DjVu Reader & Viewer on October 30, 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.*