# Paired Comp vs Flash mental calculation

The clearest difference is review sentiment: Flash mental calculation at 100% against Paired Comp's 0%. Paired Comp's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

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

Paired Comp ships an update every 10 days, Flash mental calculation every 5 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Paired Comp | Flash mental calculation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/flash-mental-calculation/id1224937523/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 10 days** | Every 5 months |
| Monetization | — | Free with in-app purchases |
| Size | 11 MB | 11 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Climb App](https://appshunter.io/developer/404048459) | [kenji kiuchi](https://appshunter.io/developer/553473005) |

## What reviewers say

### Paired Comp

[App page](https://appshunter.io/ios/app/paired-comp/id1178541820)

**Features:** Vision Pro support

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Paired Comp free?

Paired Comp is free to download, with no in-app purchases.

### Is Flash mental calculation free?

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

### Do Paired Comp or Flash mental calculation have ads?

Flash mental calculation shows ads; Paired Comp does not.

### Which is updated more often, Paired Comp or Flash mental calculation?

Paired Comp ships an update every 10 days, and Flash mental calculation every 5 months. Most recently, Paired Comp was updated on October 26, 2026 and Flash mental calculation 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.*