# 啱音字 canTone vs OtterBoard

The clearest difference is in-app purchases: 啱音字 canTone at none against OtterBoard's 8. 啱音字 canTone also leads on ads (none vs shown) and device support (4 vs 1). OtterBoard's advantage is update cadence (every 3 days vs every 2 weeks). On price there is nothing between them.

Both are free to download. OtterBoard sells 8 in-app purchases, starting at $5.99 per year. 啱音字 canTone asks for nothing beyond the download.

啱音字 canTone ships an update every 2 weeks, OtterBoard every 3 days. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 啱音字 canTone | OtterBoard |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Size | 122 MB | 227 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Rooftop Productions Limited](https://appshunter.io/developer/1055758993) | [One Eternal](https://appshunter.io/developer/6792182843) |

## What reviewers say

### 啱音字 canTone

[App page](https://appshunter.io/ios/app/cantone/id6782005428)

**Features:** Vision Pro support

**In-app purchases:** none


### OtterBoard

[App page](https://appshunter.io/ios/app/otterboard/id6803947273)

**Features:** iPhone Duo support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OtterBoard Pro Yearly | $5.99 | per year |
| 極光鍵盤主題 | $1.99 | one-time |
| 青苔螢火鍵盤主題 | $3.99 | one-time |
| 墨流鍵盤主題 | $4.99 | one-time |
| 夢幻泡泡鍵盤主題 | $5.99 | one-time |
| 機械 RGB 鍵盤主題 01 | $5.99 | one-time |
| 倉頡碼雨 Cangjie Rain 鍵盤主題 | $5.99 | one-time |
| OtterBoard Pro Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is 啱音字 canTone free?

啱音字 canTone is free to download, with no in-app purchases.

### Is OtterBoard free?

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

### Do 啱音字 canTone or OtterBoard have ads?

OtterBoard shows ads; 啱音字 canTone does not.

### Which is updated more often, 啱音字 canTone or OtterBoard?

啱音字 canTone ships an update every 2 weeks, and OtterBoard every 3 days. Most recently, 啱音字 canTone was updated on October 25, 2026 and OtterBoard on October 29, 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.*