# Chapter vs Stellary

The clearest difference is update cadence: Chapter at every 2 weeks against Stellary's every 6 weeks. Stellary's advantage is iOS requirement (16.4 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Chapter sells 3 in-app purchases, starting at $1.99 per month and Stellary sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Chapter ships an update every 2 weeks, Stellary every 6 weeks. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Chapter | Stellary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Size | 37 MB | 101 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sergiu Prodan](https://appshunter.io/developer/1531741524) | [HAKAN MATTIAS BJORN OLANDERSSON](https://appshunter.io/developer/6788922960) |

## What reviewers say

### Chapter

[App page](https://appshunter.io/ios/app/chapter-epub-and-pdf-reader/id6759279740)

**Features:** iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chapter Pro Monthly | $1.99 | per month |
| Chapter Pro Yearly | $19.99 | per year |
| Chapter Pro | $9.99 | one-time |


### Stellary

[App page](https://appshunter.io/ios/app/stellary-reading-tracker/id6788922958)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stellary Infinite | $3.99 | per month |
| Stellary Infinite | $19.99 | per 6 months |
| Stellary Infinite | $29.99 | per year |


## Frequently asked questions

### Is Chapter free?

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

### Is Stellary free?

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

### Do Chapter or Stellary have ads?

Neither Chapter nor Stellary shows ads.

### Which is updated more often, Chapter or Stellary?

Chapter ships an update every 2 weeks, and Stellary every 6 weeks. Most recently, Chapter was updated on October 28, 2026 and Stellary on October 31, 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.*