# DEVONthink To Go 4 vs Idaratech PM

The clearest difference is in-app purchases: Idaratech PM at none against DEVONthink To Go 4's 2. Idaratech PM also leads on iOS requirement (15.1 vs 26.0). DEVONthink To Go 4's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads and device support 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. Idaratech PM asks for nothing beyond the download.

DEVONthink To Go 4 ships an update every 3 weeks, Idaratech PM every 2 months. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | DEVONthink To Go 4 | Idaratech PM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (258 ratings)](https://appshunter.io/ios/app/devonthink-to-go-4/id6532619226/reviews)** | — |
| Number of ratings | **258** | — |
| Positive reviews | 44.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 193 MB | 55 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [DEVONtechnologies, LLC](https://appshunter.io/developer/395722473) | [UNIFIED SYSTEMS FOR INFORMATION TECHNOLOGY COMPANY](https://appshunter.io/developer/1588885181) |

## 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 |


### Idaratech PM

[App page](https://appshunter.io/ios/app/idaratech-pm/id6782615667)

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

**In-app purchases:** none


## Frequently asked questions

### Is DEVONthink To Go 4 free?

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

### Is Idaratech PM free?

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

### Do DEVONthink To Go 4 or Idaratech PM have ads?

Neither DEVONthink To Go 4 nor Idaratech PM shows ads.

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

DEVONthink To Go 4 ships an update every 3 weeks, and Idaratech PM every 2 months. Most recently, DEVONthink To Go 4 was updated on October 27, 2026 and Idaratech PM on October 25, 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.*