# N2x3x5x7x vs PrefixCalc

The clearest difference is iOS requirement: N2x3x5x7x at 9.0 against PrefixCalc's 12.0. On price, ads, in-app purchases and device support 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 | N2x3x5x7x | PrefixCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | — |
| Size | 15 MB | 28 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DaliFermat Ltd](https://appshunter.io/developer/1131359876) | [YONAGARE LAB](https://appshunter.io/developer/1810986554) |

## What reviewers say

### N2x3x5x7x

[App page](https://appshunter.io/ios/app/n2x3x5x7x/id1396016488)

**Features:** macOS Compatibility

**In-app purchases:** none


### PrefixCalc

[App page](https://appshunter.io/ios/app/prefixcalc/id6748650037)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is N2x3x5x7x free?

N2x3x5x7x is free to download, with no in-app purchases.

### Is PrefixCalc free?

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

### Do N2x3x5x7x or PrefixCalc have ads?

Neither N2x3x5x7x nor PrefixCalc 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.*