# Calculette Pro vs SI Converter

The clearest difference is ads: Calculette Pro at none against SI Converter's shown. Calculette Pro also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (12.0 vs 17.2). 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.

Calculette Pro ships an update every 3 weeks, SI Converter every 2 months. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Calculette Pro | SI Converter |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 10 MB | 4 MB |
| Requires iOS | **12.0** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Philippe Bondevine](https://appshunter.io/developer/1258190748) | [Ramon A. Marchante Castellanos](https://appshunter.io/developer/1735326162) |

## What reviewers say

### Calculette Pro

[App page](https://appshunter.io/ios/app/calculette-pro/id1258190749)

A powerful calculator that allows users to reuse previous results for new calculations. Streamline your math with this efficient tool.

**Highlights:** Powerful calculator, Reuse old results, New calculations, Efficient tool

**Features:** macOS Compatibility

**In-app purchases:** none


### SI Converter

[App page](https://appshunter.io/ios/app/si-converter/id6504356195)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculette Pro free?

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

### Is SI Converter free?

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

### Do Calculette Pro or SI Converter have ads?

SI Converter shows ads; Calculette Pro does not.

### Which is updated more often, Calculette Pro or SI Converter?

Calculette Pro ships an update every 3 weeks, and SI Converter every 2 months. Most recently, Calculette Pro was updated on November 2, 2026 and SI Converter on November 5, 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.*