Calc Luck! is made and published by ReiRi. AppBrain is an independent app data site and isn't affiliated with ReiRi. The app name, icon, screenshots and description belong to ReiRi and are shown as published on Google Play.
Downloads
For the practice of the for the elementary school lower grades of arithmetic.
AppBrain's verdict
Established- Installs
- 200 thousand
- Last updated
- September 5, 2026
- Ads
- Contains ads
- Size
- 4.34 MB
Calc Luck! has 200 thousand installs. It doesn't have enough ratings yet to judge what users think.
User feedback
Ratings and reviews on Google PlayComments on Calc Luck! for Android
Store listing
By ReiRi, from Google PlayDescription by ReiRi Written by the developer, not by AppBrain. Click to read.
ADDITION, SUBTRACTION and MULTIPLICATION-TABLE questions are random.
Smileys will be displayed if the correct answer.
Response results understandable for kids will be displayed.
Button will appear large, it has become easy to press even kids.
The correct answer to win badges and badge will be forfeited if an incorrect answer, it has to improve kids' motivation.
You can set about "0", "digit(place)", "addition with carry", "borrowing subtraction", and so on.
This application, make the questions a calculation question in compliance with curriculum guidelines of Japan Ministry of Education.
Recent changes:
Fixed some bugs.
Safety and technology
Found in the app by AppBrain- Ads
- Contains ads
- Price
- Free
- Libraries
- 4
- App size
- 4.34 MB
- Needs Android
- 2.3+
- Content rating
- Everyone
Technologies used by Calc Luck!
Releases
Updates seen on Google Play- Version
- 5.7
- Launched
- April 2012
Alternatives
Similar apps and more from ReiRiAlternatives to Calc Luck!
More from ReiRi
Installs
Tracked by AppBrain- Last 30 days
- 2
- Play install range
- 100+ thousand
- Launched
- April 2012
Installs over time
Calc Luck! has been installed 200 thousand times. Over the past 30 days, it has been installed 2 times.
Rankings
Google Play top chartsGoogle Play Rankings for Calc Luck!
About the app and developer
About Calc Luck!
Calc Luck! is an education app developed by ReiRi.
Download Statistics
Calc Luck! has been downloaded 200 thousand times. In the last 30 days, the app was downloaded 2 times.
User Ratings
The app has no ratings yet.
App Information
Calc Luck! is freely available from Google Play. The APK size is 4.34 MB. The latest APK version available is 5.7. The last update was on September 5, 2026.
Technical Requirements
Calc Luck! requires Android 2.3+ or higher. The app has a content rating of Everyone. The APK has been available on Google Play since April 2012.
App Performance Report
Get a detailed PDF report for Calc Luck! with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more
Get PDF Report — $29Developer information for ReiRi
Frequently asked questions about Calc Luck!
Is Calc Luck! free?
Yes. Calc Luck! is free on Google Play.
Is Calc Luck! still available?
Yes. Calc Luck! is on Google Play, and the last update we saw was on September 5, 2026.
Does Calc Luck! contain ads?
Yes. Google Play lists Calc Luck! as containing ads.
What Android version does Calc Luck! require?
Calc Luck! runs on Android 2.3 and higher.
How large is Calc Luck!?
Calc Luck! is 4.34 MB.
Is Calc Luck! suitable for children?
Google Play rates the content of Calc Luck! as suitable for everyone.
How many times has Calc Luck! been installed?
Google Play lists 100,000+ installs for Calc Luck!.
Who made Calc Luck!?
Calc Luck! was developed by ReiRi. It is listed in the education category on Google Play.
What are the best alternatives to Calc Luck!?
People looking at Calc Luck! also look at these education apps: Hunter's Math for Elementary, MathHero: Math Games for Kids, Mathlab Arithmetics, Math Tricks: Mental Math, Learn Math Games Math Practice.