# Exatest Arithmetic Speed Drill vs 21 Trainer

The clearest difference is device support: Exatest Arithmetic Speed Drill at 3 against 21 Trainer's 1. Exatest Arithmetic Speed Drill also leads on iOS requirement (14.1 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Exatest Arithmetic Speed Drill | 21 Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/exatest-arithmetic-speed-drill/id1601075819/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Monetization | Free | — |
| Size | 39 MB | 4 MB |
| Requires iOS | **14.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Steven Kideckel](https://appshunter.io/developer/1546724807) | [Jan Haider](https://appshunter.io/developer/1793934579) |

## What reviewers say

### Exatest Arithmetic Speed Drill

[App page](https://appshunter.io/ios/app/exatest-arithmetic-speed-drill/id1601075819)

Enhance your mental math skills with a daily speed drill. Solve as many arithmetic problems as possible within a 120-second timer. Track your progress with a score chart and challenge friends in a daily global competition.

**Highlights:** Timed mental arithmetic challenges, Daily speed drill mode, Score tracking and progression chart, Global daily challenge competition, Friend challenges, Practice for interviews

**Features:** macOS Compatibility

**In-app purchases:** none


### 21 Trainer

[App page](https://appshunter.io/ios/app/21-trainer/id6756545201)

**In-app purchases:** none


## Frequently asked questions

### Is Exatest Arithmetic Speed Drill free?

Exatest Arithmetic Speed Drill is free to download, with no in-app purchases.

### Is 21 Trainer free?

21 Trainer is free to download, with no in-app purchases.

### Do Exatest Arithmetic Speed Drill or 21 Trainer have ads?

Neither Exatest Arithmetic Speed Drill nor 21 Trainer shows ads.

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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.*