# RetroCalc vs iBigCalc

The clearest difference is in-app purchases: iBigCalc at none against RetroCalc's 1. RetroCalc's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. RetroCalc sells 1 one-off in-app purchase. iBigCalc asks for nothing beyond the download.

## The numbers

| Metric | RetroCalc | iBigCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | — | Every 3 weeks |
| Size | 6 MB | 5 MB |
| Requires iOS | 17.5 | **17** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Nimmi Patel](https://appshunter.io/developer/1679157418) | [Manh Phi Nguyen](https://appshunter.io/developer/1461707344) |

## What reviewers say

### RetroCalc

[App page](https://appshunter.io/ios/app/retrocalc-calculator/id6739934219)

**Features:** macOS Compatibility

**In-app purchases (1)**

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


### iBigCalc

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RetroCalc free?

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

### Is iBigCalc free?

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

### Do RetroCalc or iBigCalc have ads?

iBigCalc shows ads; RetroCalc 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.*