# iDocSet vs 欧姆龙FA世界

The clearest difference is in-app purchases: 欧姆龙FA世界 at none against iDocSet's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. iDocSet sells 1 in-app purchase, starting at $9.99 per year. 欧姆龙FA世界 asks for nothing beyond the download.

iDocSet ships an update every 2 months, 欧姆龙FA世界 every 3 months. The most recent releases landed on September 19, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | iDocSet | 欧姆龙FA世界 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Subscription | — |
| Size | 34 MB | 36 MB |
| Requires iOS | **11.2** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [建军 赵](https://appshunter.io/developer/646573154) | [OMRON INDUSTRIAL AUTOMATION (CHINA) CO.,LTD](https://appshunter.io/developer/579577755) |

## What reviewers say

### iDocSet

[App page](https://appshunter.io/ios/app/idocset/id646573151)

Access and browse a vast library of offline documentation on your mobile device. Search across multiple docsets, bookmark important entries, and filter results for quick access to API interfaces and developer guides.

**Highlights:** Offline docset browsing, Support for Apple Developer Documentation, Over 50 docsets available (HTML, CSS, C++, Go, Rust, etc.), Hierarchical and API interface browsing, Keyword filtering, Cross-docset search, iCloud bookmark synchronization

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual membership | $9.99 | per year |


### 欧姆龙FA世界

[App page](https://appshunter.io/ios/app/fa/id1440448514)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iDocSet free?

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

### Is 欧姆龙FA世界 free?

欧姆龙FA世界 is free to download, with no in-app purchases.

### Do iDocSet or 欧姆龙FA世界 have ads?

Neither iDocSet nor 欧姆龙FA世界 shows ads.

### Which is updated more often, iDocSet or 欧姆龙FA世界?

iDocSet ships an update every 2 months, and 欧姆龙FA世界 every 3 months. Most recently, iDocSet was updated on September 19, 2026 and 欧姆龙FA世界 on September 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.*