# DEVONthink To Go 4 vs TagSpaces

The clearest difference is rating: DEVONthink To Go 4 at 4.7 against TagSpaces's 1.0. DEVONthink To Go 4 also leads on ratings volume (251 vs 1). TagSpaces's advantage is iOS requirement (15.0 vs 26.0). On price, update cadence, 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 TagSpaces sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

DEVONthink To Go 4 holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: DEVONthink To Go 4 has 251 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | DEVONthink To Go 4 | TagSpaces |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (251 ratings)](https://appshunter.io/ios/app/devonthink-to-go-4/id6532619226/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/tagspaces/id6779178134/reviews) |
| Number of ratings | **251** | 1 |
| Positive reviews | 44.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 193 MB | 219 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [DEVONtechnologies, LLC](https://appshunter.io/developer/395722473) | [TagSpaces GmbH](https://appshunter.io/developer/1008944432) |

## 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 |


### TagSpaces

[App page](https://appshunter.io/ios/app/tagspaces/id6779178134)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TagSpaces Pro | $29.99 | 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 TagSpaces free?

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

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

DEVONthink To Go 4 is rated higher. DEVONthink To Go 4 averages 4.7 out of 5 from 251 ratings, while TagSpaces averages 1.0 from 1 ratings.

### Do DEVONthink To Go 4 or TagSpaces have ads?

Neither DEVONthink To Go 4 nor TagSpaces shows ads.

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

DEVONthink To Go 4 ships an update every 3 weeks, and TagSpaces every 3 weeks. Most recently, DEVONthink To Go 4 was updated on October 24, 2026 and TagSpaces on October 24, 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.*