# PrimeCalc vs Prime Rush

The clearest difference is price: Prime Rush at Free against PrimeCalc's $0.99. PrimeCalc's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Prime Rush is free to download; PrimeCalc costs $0.99 up front. Prime Rush sells 1 one-off in-app purchase. PrimeCalc asks for nothing beyond the download.

## The numbers

| Metric | PrimeCalc | Prime Rush |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 3 weeks |
| Size | 24 MB | 21 MB |
| Requires iOS | 17.4 | **17** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tino Bahr](https://appshunter.io/developer/1734175117) | [Ayumu Izumi](https://appshunter.io/developer/1822273057) |

## What reviewers say

### PrimeCalc

[App page](https://appshunter.io/ios/app/primecalc/id6544799426)

**Features:** macOS Compatibility

**In-app purchases:** none


### Prime Rush

[App page](https://appshunter.io/ios/app/prime-rush-math-time-attack/id6755986782)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Plan | $1.99 | one-time |


## Frequently asked questions

### Is PrimeCalc free?

PrimeCalc costs $0.99, with no in-app purchases.

### Is Prime Rush free?

Prime Rush is free to download, with in-app purchases available.

### Do PrimeCalc or Prime Rush have ads?

Prime Rush shows ads; PrimeCalc does not.

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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.*