Sūji vs Numbiro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sūji
Learn Japanese numbers with this app. It translates numbers into Kanji, Hiragana, or Romaji, and provides audio pronunciation. You can also generate random numbers to explore new combinations.
- Number translation to Kanji, Hiragana, Romaji
- Audio pronunciation of numbers
- Random number generation
- Supports multiple writing systems
- Practice writing and speaking
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Sūji is your companion if you are learning the numbers in Japanese, both writing and pronunciation. Type in a number and get its translation written in Kanji, Hiragana or Romaji. If it helps to hear how it is pronounced, Sūji reads the number to you so you can repeat it. And if you can't think of a number to translate, you can generate random numbers to discover new combinations.
Numbiro
Practice recognizing spoken Japanese numbers to improve comprehension in everyday conversations. Choose number ranges from single digits to billions and practice Japanese counters. Compete against the clock to get as many correct as possible.
- Listen to spoken Japanese numbers
- Identify numbers by listening
- Select number ranges
- Practice Japanese counters
- Timed challenges
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Learning to say numbers is one thing. Understanding them in real conversation is another. With Numbiro, you listen to numbers spoken in one of 29 languages and identify what you hear. Practice anything from single digits to millions or even billions, and improve your speed and accuracy under pressure. Japanese learners can also practice counters, with 20 included in the free version. Challenge yourself to see how many answers you can get right in one minute. Supported languages include Arabic, Brazilian Portuguese, Cantonese, Catalan, Czech, Danish, Dutch, English, Finnish, French, German, Hindi, Icelandic, Italian, Japanese, Korean, Mandarin, Norwegian, Polish, Portuguese, Romanian, Russian, Spanish, Swedish, Turkish and Welsh. Numbiro is ad-supported. Premium removes ads and unlocks additional features, including preset management and advanced Japanese counters, available with either a one-time purchase or subscription. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Sūji at 5.0 against Numbiro's 4.4. Sūji also leads on in-app purchases (none vs 2) and ads (none vs shown). Numbiro's advantage is ratings volume (7 vs 1) and iOS requirement (13.0 vs 17.0). On price and update cadence 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. Numbiro sells 2 in-app purchases, starting at $0.49 per month. Sūji asks for nothing beyond the download.
Sūji holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Numbiro has 7 ratings behind it against 1, so its average is the more settled of the two.
Sūji ships an update every 4 months, Numbiro every 2 months. Both last shipped on November 3, 2026.
| Parameter | Sūji | Numbiro |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.4 (7 ratings) |
| Positive reviews | — | 75.0% of reviews |
| Number of ratings | 1 | 7 — better |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, Mac, Apple TV, Apple Watch, Vision Pro — better | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 68 MB |
| Age rating | 4+ | 4+ |
| Developer | Ale Mohamad | Sulisoft Limited |
Customer experience
Sūji
Numbiro
In-app purchases
Sūji
No in-app purchases
Numbiro
- Premium Monthly$0.491 Month
- Premium Lifetime$3.99
