# Addition Skill Builders vs IdentifyThai

The clearest difference is price: IdentifyThai at Free against Addition Skill Builders's $2.99. Addition Skill Builders's advantage is iOS requirement (12.0 vs 18.2). On update cadence, ads, in-app purchases and device support there is nothing between them.

IdentifyThai is free to download; Addition Skill Builders costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Addition Skill Builders ships an update every 28 months, IdentifyThai every 20 months. The most recent releases landed on October 10, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Addition Skill Builders | IdentifyThai |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 20 months** |
| Size | 19 MB | 334 MB |
| Requires iOS | **12.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sergey Malugin](https://appshunter.io/developer/562782409) | [Jeffrey Dick](https://appshunter.io/developer/821338172) |

## What reviewers say

### Addition Skill Builders

[App page](https://appshunter.io/ios/app/addition-skill-builders/id1271517256)

**Features:** macOS Compatibility

**In-app purchases:** none


### IdentifyThai

[App page](https://appshunter.io/ios/app/identifythai-thai-dictionary/id6740945637)

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

**In-app purchases:** none


## Frequently asked questions

### Is Addition Skill Builders free?

Addition Skill Builders costs $2.99, with no in-app purchases.

### Is IdentifyThai free?

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

### Do Addition Skill Builders or IdentifyThai have ads?

Neither Addition Skill Builders nor IdentifyThai shows ads.

### Which is updated more often, Addition Skill Builders or IdentifyThai?

Addition Skill Builders ships an update every 28 months, and IdentifyThai every 20 months. Most recently, Addition Skill Builders was updated on October 10, 2026 and IdentifyThai on October 2, 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.*