# DEVONthink To Go 4 vs OpenVox Reader

DEVONthink To Go 4 and OpenVox Reader both sit at 4.7 stars, but that hides the real split: 100% of OpenVox Reader's written reviews are positive against 45% of DEVONthink To Go 4's. OpenVox Reader also leads on monetization model (free vs free with in-app purchases) and update cadence (every 6 days vs every 3 weeks). DEVONthink To Go 4's advantage is ratings volume (242 vs 3). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. DEVONthink To Go 4 sells 2 in-app purchases, starting at $2.99 per month and OpenVox Reader sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for DEVONthink To Go 4 against 4.7 for OpenVox Reader. That said, the two scores are not equally well evidenced: DEVONthink To Go 4 has 242 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 45% of DEVONthink To Go 4's written reviews are positive against 100% of OpenVox Reader's.

DEVONthink To Go 4 ships an update every 3 weeks, OpenVox Reader every 6 days. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | DEVONthink To Go 4 | OpenVox Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (242 ratings)](https://appshunter.io/ios/app/devonthink-to-go-4/id6532619226/reviews) | [4.7 (3 ratings)](https://appshunter.io/ios/app/openvox-reader/id6790389555/reviews) |
| Number of ratings | **242** | 3 |
| Positive reviews | 44.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 193 MB | 200 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [DEVONtechnologies, LLC](https://appshunter.io/developer/395722473) | [Nitesh Kumar Sharma](https://appshunter.io/developer/1875059414) |

## What reviewers say

### DEVONthink To Go 4

[App page](https://appshunter.io/ios/app/devonthink-to-go-4/id6532619226)

Manage your entire knowledge library on your iPad and iPhone. Organize, edit, and annotate documents, notes, and more. Leverage generative AI for summaries, content creation, and advanced search. Syncs privately and securely across devices.

**Highlights:** Document organization and management, AI-powered summaries and content creation, PDF annotation and editing, On-device OCR for searchable documents, Cross-device secure synchronization, Custom metadata and tagging, Shortcuts automation

**Features:** Family Sharing, Siri integration, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $19.99 | per year |


### 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 DEVONthink To Go 4 free?

DEVONthink To Go 4 is free to download, with in-app purchases available.

### Is OpenVox Reader free?

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

### Which has better reviews, DEVONthink To Go 4 or OpenVox Reader?

DEVONthink To Go 4 and OpenVox Reader are both rated 4.7 out of 5 on the App Store, from 242 and 3 ratings respectively.

### Do DEVONthink To Go 4 or OpenVox Reader have ads?

Neither DEVONthink To Go 4 nor OpenVox Reader shows ads.

### Which is updated more often, DEVONthink To Go 4 or OpenVox Reader?

DEVONthink To Go 4 ships an update every 3 weeks, and OpenVox Reader every 6 days. Most recently, DEVONthink To Go 4 was updated on October 16, 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.*