# Calc Pro vs CPMS

The clearest difference is ads: CPMS at none against Calc Pro's shown. Calc Pro's advantage is update cadence (monthly vs every 67 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Calc Pro ships an update monthly, CPMS every 67 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Calc Pro | CPMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/calc-pro-simple-and-useful/id1444681142/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 67 months |
| Monetization | Ad-supported | — |
| Size | 8 MB | 12 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Keita Nonaka](https://appshunter.io/developer/1252557006) | [BEX SOLUTIONS LIMITED](https://appshunter.io/developer/1357555528) |

## What reviewers say

### Calc Pro

[App page](https://appshunter.io/ios/app/calc-pro-simple-and-useful/id1444681142)

This powerful calculator handles complex equations and huge numbers with up to 15 digits of precision. It saves your calculation history, allowing you to reuse previous equations and answers. Access scientific functions like square root and logarithms easily with a swipe.

**Highlights:** Complex calculations, Huge number handling, Calculation history, Scientific functions, Dark Mode, Copy answer

**Features:** macOS Compatibility

**In-app purchases:** none


### CPMS

[App page](https://appshunter.io/ios/app/cpms/id1504812579)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calc Pro free?

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

### Is CPMS free?

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

### Do Calc Pro or CPMS have ads?

Calc Pro shows ads; CPMS does not.

### Which is updated more often, Calc Pro or CPMS?

Calc Pro ships an update monthly, and CPMS every 67 months. Most recently, Calc Pro was updated on November 2, 2026 and CPMS on November 3, 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.*