# Flash mental calculation vs ANZAN Endless

The clearest difference is rating: Flash mental calculation at 5.0 against ANZAN Endless's 4.0. ANZAN Endless's advantage is in-app purchases (none vs 1) and iOS requirement (13.7 vs 15.6). On price, ratings volume, 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 Endless asks for nothing beyond the download.

Flash mental calculation holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Flash mental calculation ships an update every 5 months, ANZAN Endless every 4 months. The most recent releases landed on October 24, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Flash mental calculation | ANZAN Endless |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/flash-mental-calculation/id1224937523/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/anzan-endless/id1544396774/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | **Every 4 months** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 11 MB | 3 MB |
| Requires iOS | 15.6 | **13.7** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [kenji kiuchi](https://appshunter.io/developer/553473005) | [sa0001.industry](https://appshunter.io/developer/410512599) |

## 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 Endless

[App page](https://appshunter.io/ios/app/anzan-endless/id1544396774)

Enhance your mental math skills with daily challenges that adapt to your level. Improve speed and accuracy through consistent practice. This app helps you naturally progress in flash mental arithmetic.

**Highlights:** Adaptive difficulty adjustment, Daily practice challenges, Progressive leveling system, Flash mental arithmetic training, Speed and digit count customization

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

**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 Endless free?

ANZAN Endless is free to download, with no in-app purchases.

### Which has better reviews, Flash mental calculation or ANZAN Endless?

Flash mental calculation is rated higher. Flash mental calculation averages 5.0 out of 5 from 2 ratings, while ANZAN Endless averages 4.0 from 1 ratings.

### Do Flash mental calculation or ANZAN Endless have ads?

Both Flash mental calculation and ANZAN Endless show ads.

### Which is updated more often, Flash mental calculation or ANZAN Endless?

Flash mental calculation ships an update every 5 months, and ANZAN Endless every 4 months. Most recently, Flash mental calculation was updated on October 24, 2026 and ANZAN Endless on September 28, 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.*