# Cobalt vs MoziReader

The clearest difference is update cadence: Cobalt at fortnightly against MoziReader's every 18 months. Cobalt also leads on iOS requirement (10.0 vs 13.0). MoziReader's advantage is device support (4 vs 2). On price, ads and in-app purchases there is nothing between them.

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

Cobalt ships an update fortnightly, MoziReader every 18 months. The most recent releases landed on September 25, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Cobalt | MoziReader |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 18 months |
| Monetization | — | Free |
| Size | 20 MB | 72 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [WYVERN BUSINESS SYSTEMS LTD](https://appshunter.io/developer/983973663) | [Shanghai Liaoxiang Technology Co., Ltd.](https://appshunter.io/developer/1497850980) |

## What reviewers say

### Cobalt

[App page](https://appshunter.io/ios/app/cobalt/id1523918565)

**Features:** macOS Compatibility

**In-app purchases:** none


### MoziReader

[App page](https://appshunter.io/ios/app/mozireader/id6450997313)

This app offers a pure, immersive reading experience for various ebook and comic formats. It supports local network cloud access, advanced typography, and helpful reading tools like bookmarks and annotations.

**Highlights:** Pure, immersive reading experience, Supports EPUB, TXT, MOBI, AZW3, PDF, Comics, MP3, SMB local network cloud access, Advanced typography and text formatting, High-performance PDF rendering, Bookmarks, annotations, and progress sync

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Cobalt free?

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

### Is MoziReader free?

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

### Do Cobalt or MoziReader have ads?

Neither Cobalt nor MoziReader shows ads.

### Which is updated more often, Cobalt or MoziReader?

Cobalt ships an update fortnightly, and MoziReader every 18 months. Most recently, Cobalt was updated on September 25, 2026 and MoziReader on October 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*