Japanese Ruby vs BitPrism
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Japanese Ruby
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.
- 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
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This is an APP that add ruby characters (furigana) to Japanese inputted by camera, photo, pasting, handwriting for Japanese beginner automatically. Usage 1: You can copy characters from Safari, and paste them into the text box, and study Japanese with hiragana or English characters. Usage 2: You can study Japanese by camera or photo library. Usage 3: You can input unknown kanji by handwriting and check how to read it. Usage 4: You can input text with keyboard, and send the text with ruby in PDF by mail.
BitPrism
Play classic video games on your device with this emulator. It requires you to provide your own game files, offering a straightforward experience without in-app purchases or excessive ads. Designed for developers and retro gaming enthusiasts.
- Play retro games
- Emulator functionality
- User-provided game files
- Ad-free experience
- No in-app purchases
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The App is made so you can play retro games through a emulator. This emulator does not provide any games but you will have to add your own through the file system. This emulator was made by a developer for a developer. Most emulators require you to watch many ads or pay way to much and i thought it was unfair so now we have this one.
Screenshots
Verdict
The clearest difference is ads: Japanese Ruby at none against BitPrism's shown. Japanese Ruby also leads on monetization model (free vs ad-supported) and iOS requirement (10.0 vs 15.6). BitPrism's advantage is update cadence (daily vs every 4 months). On price, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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, BitPrism daily. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.
| Parameter | Japanese Ruby | BitPrism |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 months | Daily — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 102 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Microstone Inc. | Benjamin Kararic |
In-app purchases
Japanese Ruby
No in-app purchases
BitPrism
No in-app purchases









