# iBigCalc vs Usagi Calc

The clearest difference is ads: Usagi Calc at none against iBigCalc's shown. Usagi Calc also leads on iOS requirement (13.0 vs 17). On price, 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 | iBigCalc | Usagi Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | — |
| Size | 5 MB | 21 MB |
| Requires iOS | 17 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Manh Phi Nguyen](https://appshunter.io/developer/1461707344) | [Takashi Kuwahara](https://appshunter.io/developer/1877604508) |

## What reviewers say

### iBigCalc

[App page](https://appshunter.io/ios/app/ibigcalc/id6760924865)

**Features:** macOS Compatibility

**In-app purchases:** none


### Usagi Calc

[App page](https://appshunter.io/ios/app/usagi-calc/id6764348021)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is iBigCalc free?

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

### Is Usagi Calc free?

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

### Do iBigCalc or Usagi Calc have ads?

iBigCalc shows ads; Usagi Calc 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.*