# Flash mental calculation vs Anzan Expert

The clearest difference is in-app purchases: Anzan Expert at none against Flash mental calculation's 1. Anzan Expert also leads on ratings volume (6 vs 2). Flash mental calculation's advantage is rating (5.0 vs 4.7). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Flash mental calculation sells 1 one-off in-app purchase. Anzan Expert asks for nothing beyond the download.

Flash mental calculation holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 2 and 6 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Flash mental calculation ships an update every 5 months, Anzan Expert every 3 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Flash mental calculation | Anzan Expert |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/flash-mental-calculation/id1224937523/reviews)** | [4.7 (6 ratings)](https://appshunter.io/ios/app/anzan-expert/id1534494364/reviews) |
| Number of ratings | 2 | **6** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 11 MB | 29 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [kenji kiuchi](https://appshunter.io/developer/553473005) | [Moss](https://appshunter.io/developer/1534494486) |

## 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 |


### Anzan Expert

[App page](https://appshunter.io/ios/app/anzan-expert/id1534494364)

This app helps improve mental math skills by presenting numbers that flash on screen for users to add. It offers various stages with increasing difficulty and timed challenges, along with a practice mode for self-paced learning. Users can earn medals and track their progress.

**Highlights:** Timed flash calculation challenges, 20 stages with increasing difficulty, Practice mode for self-paced learning, Expert medals and level progression, Review missed questions, Multi-challenger profiles, Customizable themes

**In-app purchases:** none


## Frequently asked questions

### Is Flash mental calculation free?

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

### Is Anzan Expert free?

Anzan Expert is free to download, with no in-app purchases.

### Which has better reviews, Flash mental calculation or Anzan Expert?

Flash mental calculation is rated higher. Flash mental calculation averages 5.0 out of 5 from 2 ratings, while Anzan Expert averages 4.7 from 6 ratings.

### Do Flash mental calculation or Anzan Expert have ads?

Both Flash mental calculation and Anzan Expert show ads.

### Which is updated more often, Flash mental calculation or Anzan Expert?

Flash mental calculation ships an update every 5 months, and Anzan Expert every 3 months. Most recently, Flash mental calculation was updated on October 24, 2026 and Anzan Expert on October 24, 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.*