# SimpleCalc. vs Calculator with 13 button

The clearest difference is ads: SimpleCalc. at none against Calculator with 13 button's shown. SimpleCalc. also leads on device support (4 vs 1) and iOS requirement (15.0 vs 26.0). Calculator with 13 button's advantage is update cadence (every 2 months vs every 7 months). On price 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.

SimpleCalc. ships an update every 7 months, Calculator with 13 button every 2 months. The most recent releases landed on October 2, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | SimpleCalc. | Calculator with 13 button |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/calculator-with-13-button/id6754880197/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | — | Ad-supported |
| Size | 16 MB | 42 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Romain Rousseau](https://appshunter.io/developer/1645997193) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### SimpleCalc.

[App page](https://appshunter.io/ios/app/simplecalc/id6447461450)

**Features:** Vision Pro support

**In-app purchases:** none


### Calculator with 13 button

[App page](https://appshunter.io/ios/app/calculator-with-13-button/id6754880197)

This utility app provides a basic calculator with a unique 13-button layout for quick input. It is designed for iPhone users seeking a straightforward calculation tool.

**Highlights:** 13-button layout, Fast typing, Basic calculations, iPhone compatible

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

**In-app purchases:** none


## Frequently asked questions

### Is SimpleCalc. free?

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

### Is Calculator with 13 button free?

Calculator with 13 button is free to download, with no in-app purchases.

### Do SimpleCalc. or Calculator with 13 button have ads?

Calculator with 13 button shows ads; SimpleCalc. does not.

### Which is updated more often, SimpleCalc. or Calculator with 13 button?

SimpleCalc. ships an update every 7 months, and Calculator with 13 button every 2 months. Most recently, SimpleCalc. was updated on October 2, 2026 and Calculator with 13 button on September 29, 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.*