# Sandbook vs Koe Reader

The clearest difference is update cadence: Sandbook at every 5 days against Koe Reader's every 5 weeks. Sandbook also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

Sandbook ships an update every 5 days, Koe Reader every 5 weeks. The most recent releases landed on November 11, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Sandbook | Koe Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (202 ratings)](https://appshunter.io/ios/app/sandbook-natural-voice-reader/id6745732885/reviews)** | — |
| Number of ratings | **202** | — |
| Positive reviews | 85.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 5 weeks |
| Monetization | Free | — |
| Size | 144 MB | 447 MB |
| Requires iOS | 18.2 | **18.0** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SmashMelon LLC](https://appshunter.io/developer/1895995887) | [Oluwaseun Olaoya](https://appshunter.io/developer/1805657643) |

## What reviewers say

### Sandbook

[App page](https://appshunter.io/ios/app/sandbook-natural-voice-reader/id6745732885)

This app converts text from various file formats, web pages, and images into natural-sounding speech. It offers offline listening, customizable playback speed, and pronunciation adjustments, making it ideal for hands-free consumption of written content.

**Highlights:** Offline text-to-speech, Supports EPUB, PDF, Word, web pages, and images, Natural Kokoro voices run locally, Customizable playback speed and pronunciation, CarPlay and lock screen controls, Export text and audiobooks, Accessibility features for dyslexia

**Features:** Vision Pro support

**In-app purchases:** none


### Koe Reader

[App page](https://appshunter.io/ios/app/koe-reader/id6797819453)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sandbook free?

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

### Is Koe Reader free?

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

### Do Sandbook or Koe Reader have ads?

Neither Sandbook nor Koe Reader shows ads.

### Which is updated more often, Sandbook or Koe Reader?

Sandbook ships an update every 5 days, and Koe Reader every 5 weeks. Most recently, Sandbook was updated on November 11, 2026 and Koe Reader on November 10, 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.*