Calc Training (30sec) Downloads & RevenueCalc Training (30sec) · App Store
Not in any tracked top chart right now.
Updated 10 Nov 2026 · rankings refresh through the day
DeveloperTomohiro Ohwada
CategoryNavigation
PriceFree
Released
Rating★ 4.6 (510)
Version1.4.1
Age rating4+
First seen by us
24 Oct 2026
24 Oct 2026Calc Training (30sec) update history & changes
Last change · 3 events since 8 Jan 2021Full timeline ↓Full timeline · 3 events
- 🆕Calc Training (30sec) first spotted by AppInsiderJapan (found via developer)
- 📦Calc Training (30sec) version 1.4.1Minor fix.
- 🆕Calc Training (30sec) released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.6 ★
510 ratings
Measured
Calc Training (30sec) on the App Store
App details
App ID
1547381216
Publisher
Tomohiro Ohwada
On the store since
Jan 2021
5 years on the store
Minimum OS
iOS 16.0+
iPhone 8 and later
Devices
iPhone · iPad
Game Center
Content rating
4+
Languages
2
EN JA
Size
9 MB
Also listed in
Education
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.6 ★
510 ratings
Measured
Ratings
510
Measured
About Calc Training (30sec)
You can practice mental arithmetic in 30 seconds.
Train your math skills by doing more mental arithmetic.
■5 types of training
- Addition
- Subtraction
- Multiplication
- Split
- mix
■Features
- 30 seconds of intensive training
- Personal best confirmation
■Credit
SE -> OtoLogic (https://otologic.jp/)
BGM -> Pocket Sound (https://pocket-se.info/)
Train your math skills by doing more mental arithmetic.
■5 types of training
- Addition
- Subtraction
- Multiplication
- Split
- mix
■Features
- 30 seconds of intensive training
- Personal best confirmation
■Credit
SE -> OtoLogic (https://otologic.jp/)
BGM -> Pocket Sound (https://pocket-se.info/)
Latest updates
1.4.1
Minor fix.
