# CalculatorPro vs RPN

The clearest difference is price: CalculatorPro at Free against RPN's $4.99. CalculatorPro also leads on update cadence (every 3 days vs every 7 months). RPN's advantage is iOS requirement (16.6 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

CalculatorPro is free to download; RPN costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CalculatorPro ships an update every 3 days, RPN every 7 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | CalculatorPro | RPN |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calculatorpro-exact-math/id1535603699/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 7 months |
| Monetization | Free | — |
| Size | 4 MB | 1 MB |
| Requires iOS | 26.0 | **16.6** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [宏立 刘](https://appshunter.io/developer/1535603701) | [Steven Davies](https://appshunter.io/developer/1705785558) |

## What reviewers say

### CalculatorPro

[App page](https://appshunter.io/ios/app/calculatorpro-exact-math/id1535603699)

A minimalist calculator app offering a clean interface and customizable theme colors. Enjoy a streamlined calculation experience with a focus on simplicity and user-friendliness.

**Highlights:** Simple calculator functionality, Customizable theme colors, Minimalist design, Streamlined user experience

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

**In-app purchases:** none


### RPN

[App page](https://appshunter.io/ios/app/rpn-calc/id6464329997)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CalculatorPro free?

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

### Is RPN free?

RPN costs $4.99, with no in-app purchases.

### Do CalculatorPro or RPN have ads?

Neither CalculatorPro nor RPN shows ads.

### Which is updated more often, CalculatorPro or RPN?

CalculatorPro ships an update every 3 days, and RPN every 7 months. Most recently, CalculatorPro was updated on November 3, 2026 and RPN on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*