# Flash mental calculation vs Abacus Mental Math Training

The clearest difference is review sentiment: Flash mental calculation at 100% against Abacus Mental Math Training's 20%. Flash mental calculation also leads on rating (5.0 vs 4.1). Abacus Mental Math Training's advantage is update cadence (monthly vs every 5 months) and ratings volume (30 vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Flash mental calculation sells 1 one-off in-app purchase and Abacus Mental Math Training sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Flash mental calculation holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Abacus Mental Math Training has 30 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Flash mental calculation's written reviews are positive against 20% of Abacus Mental Math Training's.

Flash mental calculation ships an update every 5 months, Abacus Mental Math Training monthly. The most recent releases landed on August 19, 2026 and August 22, 2026 respectively.

## The numbers

| Metric | Flash mental calculation | Abacus Mental Math Training |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/flash-mental-calculation/id1224937523/reviews)** | [4.1 (30 ratings)](https://appshunter.io/ios/app/abacus-mental-math-training/id6449295111/reviews) |
| Number of ratings | 2 | **30** |
| Positive reviews | **100.0% of reviews** | 20.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 11 MB | 34 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [kenji kiuchi](https://appshunter.io/developer/553473005) | [Peikun Duan](https://appshunter.io/developer/1240254007) |

## 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 |


### Abacus Mental Math Training

[App page](https://appshunter.io/ios/app/abacus-mental-math-training/id6449295111)

This app offers professional training and assessment for abacus mental calculation and flash calculation, adhering to international grading standards. It features challenge and custom modes to help users improve their math and speed calculation skills.

**Highlights:** Adheres to World Abacus Mental Calculation Federation standards, Challenge Mode with 10 levels and 200 stages, Custom Mode for Flash Calculation and Abacus practice, Adjustable calculation parameters (number range, digits, time), Gradual difficulty progression, Simulates exam conditions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.59 | one-time |


## Frequently asked questions

### Is Flash mental calculation free?

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

### Is Abacus Mental Math Training free?

Abacus Mental Math Training is free to download, with in-app purchases available.

### Which has better reviews, Flash mental calculation or Abacus Mental Math Training?

Flash mental calculation is rated higher. Flash mental calculation averages 5.0 out of 5 from 2 ratings, while Abacus Mental Math Training averages 4.1 from 30 ratings.

### Do Flash mental calculation or Abacus Mental Math Training have ads?

Both Flash mental calculation and Abacus Mental Math Training show ads.

### Which is updated more often, Flash mental calculation or Abacus Mental Math Training?

Flash mental calculation ships an update every 5 months, and Abacus Mental Math Training monthly. Most recently, Flash mental calculation was updated on August 19, 2026 and Abacus Mental Math Training on August 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.*