# CompisCalculator Pro — Scientific, easy use, no ads.

> Scientific calculator with unit conversion, history, and customization. (iPhone/iPad app by Karl Noreland.)

- Source: https://appshunter.io/ios/app/compiscalculator-pro/id6451198443 (this page in markdown: same URL + `.md`)
- Developer: [Karl Noreland](https://appshunter.io/developer/1697120498)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 15.0 · 3 MB
- Languages: English
- Released: 2023-08-30
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/compiscalculator-pro/id6451198443/reviews.md

## What is CompisCalculator Pro?

CompisCalculator is a scientific calculator designed to boost you productivity and offer a more robust experience.

•HISTORY: Calculations are saved in history to be used again later if needed.
•REALTIME RESULTS: The calculator shows realtime results while typing
•UNITCONVERTER: The unit can be used to convert different units like mass, volume and more. It also features a currency converter that updates every day.
•CUSTOM BUTTONS: With the custom buttons feature you can save variables as your own button. You can also create custom function witch can be useful when working with 
•DATE CALCULATOR: Use the date calculator to measure the difference in time between two dates or times of day. 
•NO ADS: CompisCalculator is free from those enjoying ads.
•IPAD OPTIMIZED: CompisCalculator is optimized for both iPad and iPhone and can take advantage of split screen and runs in both portrait and landscape orientations.
•CUSTOMIZABLE LOOK: Make the calculator you own by changing the color. Choose one of the preset colors or get creative and choose the RGB values to get the exact color you want. 
•THOUSAND SEPARATOR: Thousand separator makes it easier to visualize the number.
•HAPTIC FEEDBACK AND SOUND: Choose between different button sounds and haptic feedback styles or turn them of.

## Key features

- Real-time calculation results
- Integrated unit and currency converter
- Customizable buttons and functions
- Date and time difference calculator
- Calculation history
- Customizable appearance
- iPad optimization

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| CompisCalculator premium | $2.49 | one-time |



## Frequently asked questions about CompisCalculator Pro

### Does CompisCalculator Pro have ads?

No, CompisCalculator Pro is free from advertisements, offering an uninterrupted user experience.

### What devices is CompisCalculator Pro available on?

CompisCalculator Pro is optimized for iPhone and iPad, supporting both portrait and landscape orientations and split-screen functionality.

### How often is CompisCalculator Pro updated?

The latest version, 1.1.3, was released on April 29, 2024. Updates are provided by the developer, Karl Noreland, to enhance functionality and reliability.

### What is the age rating for CompisCalculator Pro?

CompisCalculator Pro has an age rating of 4+, making it suitable for a wide range of users.

### Can I save custom variables or functions in CompisCalculator Pro?

Yes, CompisCalculator Pro features custom buttons where you can save variables and create custom functions for more efficient calculations.

### Does CompisCalculator Pro offer currency conversion?

Yes, the unit converter within CompisCalculator Pro includes a currency converter that updates daily.

### How does CompisCalculator Pro handle large numbers?

CompisCalculator Pro includes a thousand separator feature to make visualizing and reading large numbers easier.

### What customization options are available in CompisCalculator Pro?

Users can customize the look of the calculator by choosing preset colors or selecting specific RGB values. Haptic feedback and button sounds can also be adjusted or turned off.

## Version history (last 5 releases)

### 1.1.3 — 2024-04-29

- Bug fixes and other improvements
- Largest number compatible with the ! operator increased from 20 to 170

### 1.1.2 — 2023-10-14

- A bug that sometimes prevented EUR to show in the currency converter is fixed.

### 1.1.1 — 2023-10-04

- Bug fixes

### 1.1.0 — 2023-09-28

- BMI calculator
- Customizable app icon
- New color scheme
- Bug fixes

### 1.0 — 2023-08-30

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*