Change Training - Japanese Yen

Practice Paying with Yen

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

So you do not freeze at the register. Practice paying with the fewest coins back, shown as pictures and one sentence. Change Training is a practice app for paying in Japanese yen cash so that you get back as few coins as possible. It is not a speed quiz. Every time you make a mistake, the app shows your coins next to the model answer and tells you in one sentence which coin to change. ■ Who it is for - Anyone who fumbles for coins at the register, or whose wallet keeps filling with small change - Anyone getting ready to pay with cash on their own for the first time - Special-needs education and therapy settings that teach paying with cash - Anyone who wants the reason behind the answer, not just the answer ■ How to play 1. Look at the price 2. Tap money in your wallet to put it on the tray 3. Tap "Pay" No time limit, no pressure. Tap only, no dragging. ■ Mistakes are fine The result screen lines up "You" and "Model" as pictures and points to one digit place at a time, for example "For the 4 yen in the ones place, pay one 5-yen coin". You can retry the same question. ■ Free - 20 hand-picked questions in 4 sets of 5, replayable any time - Explanations on all 20 questions - Technique lesson 1 "Get a 5-yen coin", a guided walkthrough ■ One-time purchase unlocks - Unlimited new questions with advice every time - All 24 technique lessons (getting a 5-yen, 50-yen, 500-yen coin, a 1000-yen or 5000-yen bill, and paying when you are low on coins) - Easy / Normal / Hard difficulty No ads. No subscriptions. ■ Why I made it Fumbling for coins at the register, a wallet that keeps filling up with small change - that was me. Paying so that fewer coins come back is not a knack for mental arithmetic; it is a procedure. I made this so the procedure could be practised with pictures and plain words, and I practise with it myself. ■ About the money graphics Coins and bills are drawn as simple shapes with numbers, not photos of real currency.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

The developer, Yuji Onishi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Purchases
    • Location
    • Identifiers

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
Yuji Onishi
Size
163.9 MB
Category
Education
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPad
    Requires iPadOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and Japanese
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 MaruyuApps
  • Developer Website
  • Privacy Policy

    • More by Yuji Onishi