# Ruidaichan vs Kanji Drills

The clearest difference is ads: Ruidaichan at none against Kanji Drills's shown. Ruidaichan also leads on update cadence (every 5 days vs every 2 weeks) and iOS requirement (16.6 vs 18.2). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Ruidaichan sells 2 in-app purchases, starting at $1.99 per month and Kanji Drills sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Ruidaichan ships an update every 5 days, Kanji Drills every 2 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | Ruidaichan | Kanji Drills |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 10 MB |
| Requires iOS | **16.6** | 18.2 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Naoki Ohashi](https://appshunter.io/developer/1880818831) | [Fumihiro Kawasaki](https://appshunter.io/developer/1246668885) |

## What reviewers say

### Ruidaichan

[App page](https://appshunter.io/ios/app/ruidaichan-extra-math-practice/id6759811359)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Light Plan | $1.99 | per month |
| Premium Plan | $4.99 | per month |


### Kanji Drills

[App page](https://appshunter.io/ios/app/kanji-drills-worksheet-maker/id6763892857)

Create custom kanji worksheets for children in grades 1-6, aligned with Japan's official curriculum. Personalize drills to match school pace or focus on difficult characters. Print or share as PDFs without needing physical workbooks.

**Highlights:** Customizable kanji worksheets, Aligned with Japanese curriculum (Grades 1-6), Printable and shareable PDFs, Three worksheet types (Copy, Dictation, Reading), Four ordering modes, Star difficult kanji, Authentic Japanese drill layout

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kanji Worksheet Pro – Monthly | $2.99 | per month |
| Kanji Worksheet Pro – Yearly | $24.99 | per year |
| 全機能を解放（買い切り） | $5.99 | one-time |


## Frequently asked questions

### Is Ruidaichan free?

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

### Is Kanji Drills free?

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

### Do Ruidaichan or Kanji Drills have ads?

Kanji Drills shows ads; Ruidaichan does not.

### Which is updated more often, Ruidaichan or Kanji Drills?

Ruidaichan ships an update every 5 days, and Kanji Drills every 2 weeks. Most recently, Ruidaichan was updated on October 31, 2026 and Kanji Drills on October 31, 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.*