# Japanese Ruby vs Furigana PDF

The clearest difference is review sentiment: Furigana PDF at 69% against Japanese Ruby's 0%. Japanese Ruby's advantage is iOS requirement (10.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Japanese Ruby | Furigana PDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (2 ratings)](https://appshunter.io/ios/app/furigana-pdf/id1516570722/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 0.0% of reviews | **69.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | Free | Free |
| Size | 102 MB | 54 MB |
| Requires iOS | **10.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Microstone Inc.](https://appshunter.io/developer/791918315) | [telethon k.k.](https://appshunter.io/developer/699508003) |

## 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


### Furigana PDF

[App page](https://appshunter.io/ios/app/furigana-pdf/id1516570722)

Easily add furigana reading aids to Japanese PDF documents. This app automatically annotates Kanji characters and allows customization to match your PDF's layout. You can also scan paper documents and add furigana, with all processing done offline for privacy.

**Highlights:** Automatic furigana annotation, Customizable furigana display, Scan and annotate paper documents, Offline processing for privacy, Supports horizontal and vertical text, Export annotated PDFs

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Japanese Ruby free?

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

### Is Furigana PDF free?

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

### Do Japanese Ruby or Furigana PDF have ads?

Neither Japanese Ruby nor Furigana PDF shows ads.

### Which is updated more often, Japanese Ruby or Furigana PDF?

Japanese Ruby ships an update every 4 months, and Furigana PDF every 4 months. Most recently, Japanese Ruby was updated on November 2, 2026 and Furigana PDF on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*