# Sandbook vs OpenVox Reader

The clearest difference is in-app purchases: Sandbook at none against OpenVox Reader's 1. Sandbook also leads on ratings volume (92 vs 3). OpenVox Reader's advantage is review sentiment (100% vs 78%). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. OpenVox Reader sells 1 one-off in-app purchase. Sandbook asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for Sandbook against 4.7 for OpenVox Reader. That said, the two scores are not equally well evidenced: Sandbook has 92 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 78% of Sandbook's written reviews are positive against 100% of OpenVox Reader's.

Sandbook ships an update weekly, OpenVox Reader every 6 days. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Sandbook | OpenVox Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (92 ratings)](https://appshunter.io/ios/app/sandbook-natural-voice-reader/id6745732885/reviews) | **[4.7 (3 ratings)](https://appshunter.io/ios/app/openvox-reader/id6790389555/reviews)** |
| Number of ratings | **92** | 3 |
| Positive reviews | 77.8% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 6 days** |
| Monetization | Free | Free |
| Size | 270 MB | 200 MB |
| Requires iOS | 18.2 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SmashMelon LLC](https://appshunter.io/developer/1895995887) | [Nitesh Kumar Sharma](https://appshunter.io/developer/1875059414) |

## What reviewers say

### Sandbook

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

This app converts text into natural-sounding speech using an on-device model. Read ePub, PDF, and TXT files, type or paste text, or even read webpages aloud. Export audio files for offline listening with complete privacy.

**Highlights:** On-device text-to-speech, Reads ePub, PDF, TXT files, Type or paste text, Read webpages aloud, Export audio files, Privacy protection

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

**In-app purchases:** none


### OpenVox Reader

[App page](https://appshunter.io/ios/app/openvox-reader/id6790389555)

Transform any text into natural-sounding audio for offline listening. Import books, PDFs, documents, and web links. Choose from hundreds of voices, adjust playback speed, and save important sentences. Keep your documents private with local processing.

**Highlights:** Text to audio conversion, Offline listening, Import ebooks, PDFs, documents, web links, Hundreds of natural voices, Custom voice creation, Adjustable playback speed, Save important sentences, In-document search

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenVox Reader Pro Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is Sandbook free?

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

### Is OpenVox Reader free?

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

### Which has better reviews, Sandbook or OpenVox Reader?

OpenVox Reader is rated higher. Sandbook averages 4.6 out of 5 from 92 ratings, while OpenVox Reader averages 4.7 from 3 ratings.

### Do Sandbook or OpenVox Reader have ads?

Neither Sandbook nor OpenVox Reader shows ads.

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

Sandbook ships an update weekly, and OpenVox Reader every 6 days. Most recently, Sandbook was updated on October 16, 2026 and OpenVox Reader on October 6, 2026.

---

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