# PrefixCalc vs Numby

The clearest difference is device support: PrefixCalc at 3 against Numby's 1. PrefixCalc also leads on iOS requirement (12.0 vs 16.6). 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 | PrefixCalc | Numby |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 days |
| Size | 28 MB | 16 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [YONAGARE LAB](https://appshunter.io/developer/1810986554) | [TEAM MILESTONE GP.](https://appshunter.io/developer/1678715921) |

## What reviewers say

### PrefixCalc

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Numby

[App page](https://appshunter.io/ios/app/numbybeautiful-calculator/id6755832409)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PrefixCalc free?

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

### Is Numby free?

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

### Do PrefixCalc or Numby have ads?

Neither PrefixCalc nor Numby 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.*