# Sona Reader vs Story Island

The clearest difference is update cadence: Sona Reader at every 10 days against Story Island's every 3 weeks. Story Island's advantage is iOS requirement (15.1 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Sona Reader ships an update every 10 days, Story Island every 3 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Sona Reader | Story Island |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Size | 41 MB | 59 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Sona Books Limited](https://appshunter.io/developer/1893668568) | [Calvary Media UK Ltd.](https://appshunter.io/developer/1896652339) |

## What reviewers say

### Sona Reader

[App page](https://appshunter.io/ios/app/sona-reader/id6762288563)

**In-app purchases:** none


### Story Island

[App page](https://appshunter.io/ios/app/story-island/id6769357370)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sona Reader free?

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

### Is Story Island free?

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

### Do Sona Reader or Story Island have ads?

Neither Sona Reader nor Story Island shows ads.

### Which is updated more often, Sona Reader or Story Island?

Sona Reader ships an update every 10 days, and Story Island every 3 weeks. Most recently, Sona Reader was updated on November 5, 2026 and Story Island 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.*