Japan Word vs Numethra
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Japan Word
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It can be used for vocabulary practice for beginners of Japanese. It is structured in a similar way to lessons such as Minna no Nihongo, Daichi, Marugoto, etc. It can be played alone or with friends. The basic way to play is that first, one person puts their iPad (or smartphone) above their head so that they cannot see the screen of the smartphone from themselves. Then, another person looks at the word displayed on the smartphone and gives a clue for that word. The second person will look at the word on the phone and give a clue to the word, but do not say the word directly. Then, guess what word is being explained and guess the displayed word. If you guess correctly, you must tip the iPad forward. If you tip it forward, you get a point. Then you move on to the next question. If you fail to guess correctly, you move the iPad backward and move on to the next question. There are various ways to give hints. You can give hints in Japanese, in your native language, or with gestures.
Numethra
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Numethra is an addictive number puzzle game that will challenge your brain and test your math skills! Your objective is simple: use the given numbers and basic arithmetic operations (addition, subtraction, multiplication, division) to reach the target number. Designed for players of all ages, Numethra helps improve your mental agility and problem-solving abilities while having fun. FEATURES: ► CHALLENGE YOUR MIND Develop strategies to reach the target number using the provided set of numbers. Test your analytical thinking! ► ENDLESS UNIQUE PUZZLES Thanks to our dynamic game engine, encounter a new and unique puzzle every time you play. The fun never stops! ► VARIOUS DIFFICULTY LEVELS Whether you're a beginner or a number wizard, you'll find a difficulty level (from Very Easy to Expert) that suits you. ► CUSTOMIZABLE EXPERIENCE Personalize your game by choosing from different app themes to match your style. ► INTUITIVE AND EASY TO USE Focus straight on the fun without any clutter, thanks to a simple, clean, and user-friendly interface. ► PLAY OFFLINE Enjoy Numethra even without an internet connection – perfect for playing anytime, anywhere. ► EDUCATIONAL AND FUN Improve mathematical thinking and operational skills in an entertaining way. Ready to test your math skills and push your mental limits? Download Numethra now and step into the fascinating world of numbers! The perfect game for your daily brain workout.
Screenshots
Verdict
The clearest difference is in-app purchases: Numethra at none against Japan Word's 1. On price, update cadence, ads 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. Japan Word sells 1 one-off in-app purchase. Numethra asks for nothing beyond the download.
Japan Word ships an update every 3 days, Numethra weekly. The most recent releases landed on October 25, 2026 and October 7, 2026 respectively.
| Parameter | Japan Word | Numethra |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days — better | Weekly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.2 | 15.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Naoki Yamagishi | SEYIT FATIH YAZICI |
In-app purchases
Japan Word
- Open lessons$3.99
Numethra
No in-app purchases
Questions
Is Japan Word free?
Is Numethra free?
Do Japan Word or Numethra have ads?
Which is updated more often, Japan Word or Numethra?
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