# Calculator with 12 button vs iBigCalc

The clearest difference is update cadence: iBigCalc at every 3 weeks against Calculator with 12 button's every 2 months. iBigCalc also leads on iOS requirement (17 vs 26.0). 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.

Calculator with 12 button ships an update every 2 months, iBigCalc every 3 weeks. The most recent releases landed on October 25, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Calculator with 12 button | iBigCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 42 MB | 5 MB |
| Requires iOS | 26.0 | **17** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [Manh Phi Nguyen](https://appshunter.io/developer/1461707344) |

## What reviewers say

### Calculator with 12 button

[App page](https://appshunter.io/ios/app/calculator-with-12-button/id6754877013)

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

**In-app purchases:** none


### iBigCalc

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculator with 12 button free?

Calculator with 12 button is free to download, with no in-app purchases.

### Is iBigCalc free?

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

### Do Calculator with 12 button or iBigCalc have ads?

Both Calculator with 12 button and iBigCalc show ads.

### Which is updated more often, Calculator with 12 button or iBigCalc?

Calculator with 12 button ships an update every 2 months, and iBigCalc every 3 weeks. Most recently, Calculator with 12 button was updated on October 25, 2026 and iBigCalc on October 16, 2026.

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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.*