# Calculator∫ vs Simple Unit Convert Pro

The clearest difference is update cadence: Calculator∫ at weekly against Simple Unit Convert Pro's every 2 months. Calculator∫ also leads on iOS requirement (4.3 vs 15.1). Simple Unit Convert Pro's advantage is rating (5.0 vs 4.6). On price, ratings volume, ads 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.

Simple Unit Convert Pro holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 7 and 4 respectively.

Calculator∫ ships an update weekly, Simple Unit Convert Pro every 2 months. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Calculator∫ | Simple Unit Convert Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (7 ratings)](https://appshunter.io/ios/app/calculator/id635938472/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/simple-unit-convert-pro/id6477877519/reviews)** |
| Number of ratings | **7** | 4 |
| Positive reviews | 83.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | Free | Free |
| Size | 1 MB | 27 MB |
| Requires iOS | **4.3** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [7th Gear](https://appshunter.io/developer/321178305) | [Annika Gadman](https://appshunter.io/developer/1728509902) |

## What reviewers say

### Calculator∫

[App page](https://appshunter.io/ios/app/calculator/id635938472)

Perform calculations quickly and accurately with large buttons. Personalize the interface by selecting custom background and text colors. This straightforward utility is designed for intuitive use.

**Highlights:** Large buttons for easy input, Accurate calculations, Customizable background colors, Customizable text colors, Intuitive user interface

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

**In-app purchases:** none


### Simple Unit Convert Pro

[App page](https://appshunter.io/ios/app/simple-unit-convert-pro/id6477877519)

This utility app offers a comprehensive solution for converting various units of measurement. It simplifies daily tasks by providing precise conversions for temperature, speed, distance, weight, volume, and area. Streamline your needs with this user-friendly converter.

**Highlights:** Temperature conversion (Fahrenheit/Celsius), Speed conversion (mph/kph), Distance conversion (miles/kilometers), Weight conversion (lbs/oz/kg), Volume conversion (cups/ml/gallons), Area conversion (sq ft/sq m)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculator∫ free?

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

### Is Simple Unit Convert Pro free?

Simple Unit Convert Pro is free to download, with no in-app purchases.

### Which has better reviews, Calculator∫ or Simple Unit Convert Pro?

Simple Unit Convert Pro is rated higher. Calculator∫ averages 4.6 out of 5 from 7 ratings, while Simple Unit Convert Pro averages 5.0 from 4 ratings.

### Do Calculator∫ or Simple Unit Convert Pro have ads?

Neither Calculator∫ nor Simple Unit Convert Pro shows ads.

### Which is updated more often, Calculator∫ or Simple Unit Convert Pro?

Calculator∫ ships an update weekly, and Simple Unit Convert Pro every 2 months. Most recently, Calculator∫ was updated on October 15, 2026 and Simple Unit Convert Pro on October 12, 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.*