# 3Egreen Meter vs Stoat Keyboard

The clearest difference is in-app purchases: 3Egreen Meter at none against Stoat Keyboard's 5. Stoat Keyboard's advantage is update cadence (every 2 days vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Stoat Keyboard sells 5 one-off in-app purchases. 3Egreen Meter asks for nothing beyond the download.

3Egreen Meter ships an update every 6 weeks, Stoat Keyboard every 2 days. The most recent releases landed on October 5, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 3Egreen Meter | Stoat Keyboard |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 days** |
| Size | 9 MB | 102 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Skywind Inc.](https://appshunter.io/developer/900391858) | [CHIA HUNG LEE](https://appshunter.io/developer/6806891063) |

## What reviewers say

### 3Egreen Meter

[App page](https://appshunter.io/ios/app/3egreen-meter/id1659607105)

**Features:** macOS Compatibility

**In-app purchases:** none


### Stoat Keyboard

[App page](https://appshunter.io/ios/app/stoat-keyboard/id6806891061)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stoat Pro 一次買斷 | $0.99 | one-time |
| Stoat 排版客製化 | $0.99 | one-time |
| Stoat 按鍵客製化 | $0.99 | one-time |
| Stoat 輸入功能包 | $0.99 | one-time |
| Stoat 全套客製化功能包 | $3.99 | one-time |


## Frequently asked questions

### Is 3Egreen Meter free?

3Egreen Meter is free to download, with no in-app purchases.

### Is Stoat Keyboard free?

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

### Do 3Egreen Meter or Stoat Keyboard have ads?

Neither 3Egreen Meter nor Stoat Keyboard shows ads.

### Which is updated more often, 3Egreen Meter or Stoat Keyboard?

3Egreen Meter ships an update every 6 weeks, and Stoat Keyboard every 2 days. Most recently, 3Egreen Meter was updated on October 5, 2026 and Stoat Keyboard on October 10, 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.*