# ERG4Thai vs AIDM plus

The clearest difference is update cadence: AIDM plus at every 3 weeks against ERG4Thai's every 3 months. ERG4Thai's advantage is iOS requirement (13.0 vs 17.0). 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.

ERG4Thai ships an update every 3 months, AIDM plus every 3 weeks. The most recent releases landed on November 12, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ERG4Thai | AIDM plus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 86 MB | 76 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Pollution Control Department, Thailand](https://appshunter.io/developer/966167337) | [KONDESIGN SOFTTECH SOLUTION COMPANY LIMITED](https://appshunter.io/developer/1647104723) |

## What reviewers say

### ERG4Thai

[App page](https://appshunter.io/ios/app/erg4thai/id1514892942)

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

**In-app purchases:** none


### AIDM plus

[App page](https://appshunter.io/ios/app/aidm-plus/id6800834095)

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

**In-app purchases:** none


## Frequently asked questions

### Is ERG4Thai free?

ERG4Thai is free to download, with no in-app purchases.

### Is AIDM plus free?

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

### Do ERG4Thai or AIDM plus have ads?

Neither ERG4Thai nor AIDM plus shows ads.

### Which is updated more often, ERG4Thai or AIDM plus?

ERG4Thai ships an update every 3 months, and AIDM plus every 3 weeks. Most recently, ERG4Thai was updated on November 12, 2026 and AIDM plus on October 31, 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.*