# Flash mental calculation vs Mental Math Speed Trainer

The clearest difference is review sentiment: Flash mental calculation at 100% against Mental Math Speed Trainer's 18%. Flash mental calculation also leads on rating (5.0 vs 4.3) and device support (3 vs 1). Mental Math Speed Trainer's advantage is update cadence (weekly vs every 5 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Flash mental calculation sells 1 one-off in-app purchase and Mental Math Speed Trainer sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Flash mental calculation holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews point the same way: 100% of Flash mental calculation's written reviews are positive against 18% of Mental Math Speed Trainer's.

Flash mental calculation ships an update every 5 months, Mental Math Speed Trainer weekly. The most recent releases landed on August 19, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Flash mental calculation | Mental Math Speed Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/flash-mental-calculation/id1224937523/reviews)** | [4.3 (4 ratings)](https://appshunter.io/ios/app/mental-math-speed-trainer/id6476421167/reviews) |
| Number of ratings | 2 | **4** |
| Positive reviews | **100.0% of reviews** | 17.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 11 MB | 56 MB |
| Requires iOS | **15.6** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [kenji kiuchi](https://appshunter.io/developer/553473005) | [TAKAYUKI HASHIMOTO](https://appshunter.io/developer/1689527181) |

## What reviewers say

### Flash mental calculation

[App page](https://appshunter.io/ios/app/flash-mental-calculation/id1224937523)

Practice mental arithmetic with this educational app. Review your calculation process, and easily re-challenge mistaken problems from your past logs. Upgrade to save more calculation history.

**Highlights:** Practice flash mental arithmetic, Review calculation process, Rechallenge mistaken problems, Save past calculation logs, Log history saved after purchase

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove AD & All function Release. | $9.99 | one-time |


### Mental Math Speed Trainer

[App page](https://appshunter.io/ios/app/mental-math-speed-trainer/id6476421167)

Sharpen your mental math skills with this engaging app focused on addition. Customize card numbers and timing intervals for a personalized learning experience. Track your progress with visually stimulating graphics, suitable for all ages.

**Highlights:** Customizable card numbers, Adjustable timing intervals, Focus on addition, Progress tracking, Engaging visuals, User-friendly interface

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月間プラン | $2.99 | per month |
| 年間プラン | $19.99 | per year |
| Lifetime Premium | $39.99 | one-time |


## Frequently asked questions

### Is Flash mental calculation free?

Flash mental calculation is free to download, with in-app purchases available.

### Is Mental Math Speed Trainer free?

Mental Math Speed Trainer is free to download, with in-app purchases available.

### Which has better reviews, Flash mental calculation or Mental Math Speed Trainer?

Flash mental calculation is rated higher. Flash mental calculation averages 5.0 out of 5 from 2 ratings, while Mental Math Speed Trainer averages 4.3 from 4 ratings.

### Do Flash mental calculation or Mental Math Speed Trainer have ads?

Both Flash mental calculation and Mental Math Speed Trainer show ads.

### Which is updated more often, Flash mental calculation or Mental Math Speed Trainer?

Flash mental calculation ships an update every 5 months, and Mental Math Speed Trainer weekly. Most recently, Flash mental calculation was updated on August 19, 2026 and Mental Math Speed Trainer on September 22, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*