Furiganify! vs OnlyNumbers
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Furiganify!
This extension adds Japanese reading aids (Furigana) to text displayed in Safari. It processes all data locally for enhanced privacy and offers customization options for learning. Choose between Romaji or Hiragana, and filter by school grade or JLPT level.
- Adds Furigana (Ruby characters) to Japanese text
- On-device processing for maximum privacy
- Supports Romaji and Hiragana
- Filter Furigana by school grade
- Filter Furigana by JLPT level
- Reduces clutter for studying
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Furiganify! is a lightweight extension for Safari that adds Furigana reading aids (Ruby characters) to Japanese text. All processing occurs on your device to ensure maximum privacy. Furiganify only reads the content from webpages you explicitly select. No data about the webpages you visit or their content ever leaves your device. Both Latin characters (Romaji) and Hiragana can be used. In addition, you can also chose to have furigana added only to Kanji characters beyond a certain school grade or JLPT level. This reduces clutter and serves as a great studying aid.
OnlyNumbers
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Pick a date in the past or future and and see exactly how far away it is, in days, months, or years. Keep as many as you like. Name them, or not. View in full screen. Swipe to delete, hold and drag to reorder. Pin one to your home screen as a widget and see it without opening the app. Light and dark follow your system. Text scales with your accessibility settings, all the way up. No accounts. No data collection. No ads. Your numbers stay on your device.
Screenshots
Verdict
The clearest difference is update cadence: OnlyNumbers at every 9 days against Furiganify!'s every 8 months. On price, ads, 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.
Furiganify! ships an update every 8 months, OnlyNumbers every 9 days. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.
| Parameter | Furiganify! | OnlyNumbers |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (8 ratings) — better | — |
| Positive reviews | 72.4% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 8 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 17.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 8 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | telethon k.k. | Mike Parker |
In-app purchases
Furiganify!
No in-app purchases
OnlyNumbers
No in-app purchases
