# OpenCalorie vs OpenVox Reader

The clearest difference is in-app purchases: OpenCalorie at none against OpenVox Reader's 1. OpenVox Reader's advantage is iOS requirement (17.0 vs 26.5). On price, update cadence, ads and device support there is nothing between them.

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

OpenCalorie ships an update every 4 days, OpenVox Reader every 6 days. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | OpenCalorie | OpenVox Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3 ratings)](https://appshunter.io/ios/app/openvox-reader/id6790389555/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 6 days |
| Monetization | — | Free |
| Size | 20 MB | 200 MB |
| Requires iOS | 26.5 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Slawomir Job](https://appshunter.io/developer/6781028541) | [Nitesh Kumar Sharma](https://appshunter.io/developer/1875059414) |

## What reviewers say

### OpenCalorie

[App page](https://appshunter.io/ios/app/opencalorie/id6782002595)

**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 OpenCalorie free?

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

### Is OpenVox Reader free?

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

### Do OpenCalorie or OpenVox Reader have ads?

Neither OpenCalorie nor OpenVox Reader shows ads.

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

OpenCalorie ships an update every 4 days, and OpenVox Reader every 6 days. Most recently, OpenCalorie was updated on October 2, 2026 and OpenVox Reader on October 6, 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.*