# CompisCalculator Pro vs 1000digit Calc

The clearest difference is in-app purchases: 1000digit Calc at none against CompisCalculator Pro's 1. 1000digit Calc also leads on update cadence (weekly vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CompisCalculator Pro sells 1 one-off in-app purchase. 1000digit Calc asks for nothing beyond the download.

CompisCalculator Pro ships an update every 3 weeks, 1000digit Calc weekly. The most recent releases landed on October 15, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | CompisCalculator Pro | 1000digit Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/compiscalculator-pro/id6451198443/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 3 MB | 5 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Karl Noreland](https://appshunter.io/developer/1697120498) | [Yukihiro Shioya](https://appshunter.io/developer/1565306192) |

## What reviewers say

### CompisCalculator Pro

[App page](https://appshunter.io/ios/app/compiscalculator-pro/id6451198443)

A scientific calculator designed to enhance productivity with features like real-time results, unit conversion, and custom buttons. It offers a date calculator, customizable appearance, and is optimized for iPad.

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

**Features:** macOS Compatibility

**In-app purchases (1)**

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


### 1000digit Calc

[App page](https://appshunter.io/ios/app/1000digit-calc/id6463856899)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CompisCalculator Pro free?

CompisCalculator Pro is free to download, with in-app purchases available.

### Is 1000digit Calc free?

1000digit Calc is free to download, with no in-app purchases.

### Do CompisCalculator Pro or 1000digit Calc have ads?

Neither CompisCalculator Pro nor 1000digit Calc shows ads.

### Which is updated more often, CompisCalculator Pro or 1000digit Calc?

CompisCalculator Pro ships an update every 3 weeks, and 1000digit Calc weekly. Most recently, CompisCalculator Pro was updated on October 15, 2026 and 1000digit Calc on October 17, 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.*