# Japanese Ruby vs LINBLE Keyboard

The clearest difference is update cadence: Japanese Ruby at every 4 months against LINBLE Keyboard's every 9 months. Japanese Ruby also leads on iOS requirement (10.0 vs 15.0). On price, ads, 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.

Japanese Ruby ships an update every 4 months, LINBLE Keyboard every 9 months. The most recent releases landed on October 9, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Japanese Ruby | LINBLE Keyboard |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 9 months |
| Monetization | Free | — |
| Size | 102 MB | 1 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Microstone Inc.](https://appshunter.io/developer/791918315) | [Musen Connect, Inc.](https://appshunter.io/developer/1570398182) |

## What reviewers say

### Japanese Ruby

[App page](https://appshunter.io/ios/app/japanese-ruby/id1437026891)

This app automatically adds furigana (ruby characters) to Japanese text. It supports input via camera, photos, pasting, and handwriting, making it ideal for beginners learning Japanese. You can also export text with furigana to PDF via email.

**Highlights:** Add furigana to Japanese text, Input via camera, Input via photo library, Handwriting recognition for kanji, Export to PDF with furigana, Study with hiragana or English

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

**In-app purchases:** none


### LINBLE Keyboard

[App page](https://appshunter.io/ios/app/linble-keyboard/id1570398180)

**In-app purchases:** none


## Frequently asked questions

### Is Japanese Ruby free?

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

### Is LINBLE Keyboard free?

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

### Do Japanese Ruby or LINBLE Keyboard have ads?

Neither Japanese Ruby nor LINBLE Keyboard shows ads.

### Which is updated more often, Japanese Ruby or LINBLE Keyboard?

Japanese Ruby ships an update every 4 months, and LINBLE Keyboard every 9 months. Most recently, Japanese Ruby was updated on October 9, 2026 and LINBLE Keyboard on October 11, 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.*