# GH Air vs 记忆training

The clearest difference is ads: GH Air at none against 记忆training's shown. 记忆training's advantage is update cadence (every 7 months vs every 41 months) and iOS requirement (11.0 vs 18). On price, 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.

GH Air ships an update every 41 months, 记忆training every 7 months. The most recent releases landed on September 14, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | GH Air | 记忆training |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 41 months | **Every 7 months** |
| Size | 2 MB | 160 MB |
| Requires iOS | 18 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [剑 程](https://appshunter.io/developer/934706802) | [川 丁](https://appshunter.io/developer/1610501233) |

## What reviewers say

### GH Air

[App page](https://appshunter.io/ios/app/gh-air/id1252566447)

**Features:** macOS Compatibility

**In-app purchases:** none


### 记忆training

[App page](https://appshunter.io/ios/app/training/id1610501231)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GH Air free?

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

### Is 记忆training free?

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

### Do GH Air or 记忆training have ads?

记忆training shows ads; GH Air does not.

### Which is updated more often, GH Air or 记忆training?

GH Air ships an update every 41 months, and 记忆training every 7 months. Most recently, GH Air was updated on September 14, 2026 and 记忆training on September 13, 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.*