# TextbookDojo vs Kizki

The clearest difference is in-app purchases: Kizki at none against TextbookDojo's 3. Kizki also leads on ads (none vs shown). TextbookDojo's advantage is update cadence (every 9 days vs every 3 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. TextbookDojo sells 3 in-app purchases, starting at $4.49 per month. Kizki asks for nothing beyond the download.

TextbookDojo ships an update every 9 days, Kizki every 3 weeks. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | TextbookDojo | Kizki |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Size | 102 MB | 31 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ROBOBO, K.K.](https://appshunter.io/developer/1338822905) | [Kanji Goto](https://appshunter.io/developer/1799644657) |

## What reviewers say

### TextbookDojo

[App page](https://appshunter.io/ios/app/textbookdojo/id1338822906)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month payment | $4.49 | per month |
| 1 year payment | $19.99 | per year |
| プレミアム年払い（期間限定特別価格） | $19.99 | per year |


### Kizki

[App page](https://appshunter.io/ios/app/kizki/id6755897374)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TextbookDojo free?

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

### Is Kizki free?

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

### Do TextbookDojo or Kizki have ads?

TextbookDojo shows ads; Kizki does not.

### Which is updated more often, TextbookDojo or Kizki?

TextbookDojo ships an update every 9 days, and Kizki every 3 weeks. Most recently, TextbookDojo was updated on October 15, 2026 and Kizki on October 14, 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.*