# Flash: Mental Math — Fast mental math practice

> Fast mental math practice (iPhone/iPad app by yeeun seo.)

- Source: https://appshunter.io/ios/app/flash-mental-math/id1634215601 (this page in markdown: same URL + `.md`)
- Developer: [yeeun seo](https://appshunter.io/developer/1634215603)
- Category: Education, Games, Family, Trivia
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 16 MB
- Languages: American English, Hindi, Indonesian, Japanese, Korean, Malay, Chinese (Simplified, China), European Spanish, Thai, Chinese (Traditional, Taiwan)
- Released: 2022-07-14
- Data updated: 2026-09-18
- User reviews in markdown: https://appshunter.io/ios/app/flash-mental-math/id1634215601/reviews.md

## What is Flash?

Train your mental arithmetic with numbers that flash one at a time. Watch the sequence, add it in your head, and enter the total before the next round.

Flash keeps practice simple:
• Choose 1–7 digits and 2–500 numbers.
• Set the display speed from 0.1 to 3.0 seconds.
• Practice 1–999 rounds or keep going in Infinite mode.
• Turn answer input and automatic continuation on or off.
• Choose a light or blue background.
• Use sound, haptic, or both for feedback.
• Save your favorite settings as presets.
• Check accuracy, response time, streaks, and total training time.
• Review the exact number sequence for each round and retry mistakes.

Use it for a quick session or a longer challenge. Flash gives you a clear way to practice at your own pace.


## Version history (last 5 releases)

### 3.0.1 — 2026-09-08

Version 3.0.1 brings a refreshed practice flow with session results, mistake review, saved presets, and support for more languages.

### 2.5.1 — 2023-04-01

delete duplication numbers.
small bugs fixed.

### 2.0.1 — 2022-10-28

Now you can set Sound when the numbers flash. 
improve your concentration with that!

### 2.0 — 2022-10-27

Now you can set Sound when the numbers flash. 
improve your concentration with that!

### 1.0 — 2022-07-15

No release notes.

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## More apps by yeeun seo

- [WI Timer](https://appshunter.io/ios/app/wi-timer/id6448949564)

All apps by yeeun seo: https://appshunter.io/developer/1634215603

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-18.*