# AIA IR Library vs OHS

The clearest difference is update cadence: AIA IR Library at every 2 weeks against OHS's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

AIA IR Library ships an update every 2 weeks, OHS every 4 months. The most recent releases landed on October 5, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | AIA IR Library | OHS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Size | 22 MB | 75 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [AIA Group](https://appshunter.io/developer/1536091904) | [PSA Marine Pte Ltd](https://appshunter.io/developer/1361004640) |

## What reviewers say

### AIA IR Library

[App page](https://appshunter.io/ios/app/aia-ir-library/id1610252803)

**Features:** macOS Compatibility

**In-app purchases:** none


### OHS

[App page](https://appshunter.io/ios/app/ohs/id6444669620)

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

**In-app purchases:** none


## Frequently asked questions

### Is AIA IR Library free?

AIA IR Library is free to download, with no in-app purchases.

### Is OHS free?

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

### Do AIA IR Library or OHS have ads?

Neither AIA IR Library nor OHS shows ads.

### Which is updated more often, AIA IR Library or OHS?

AIA IR Library ships an update every 2 weeks, and OHS every 4 months. Most recently, AIA IR Library was updated on October 5, 2026 and OHS on October 20, 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.*