# PROG_CALC vs RPN

The clearest difference is update cadence: PROG_CALC at every 2 weeks against RPN's every 6 months. PROG_CALC also leads on device support (4 vs 2) and iOS requirement (13 vs 15.6). On price, 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.

PROG_CALC ships an update every 2 weeks, RPN every 6 months. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | PROG_CALC | RPN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/prog-calc/id1640426491/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 months |
| Monetization | Free | — |
| Size | 78 MB | 1 MB |
| Requires iOS | **13** | 15.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [嘉欣 胡](https://appshunter.io/developer/1640395440) | [Joachim Seland Graff](https://appshunter.io/developer/1845679029) |

## What reviewers say

### PROG_CALC

[App page](https://appshunter.io/ios/app/prog-calc/id1640426491)

This app offers a programmable calculator with two distinct modes for daily computing and advanced mathematical functions. It supports system conversions between binary, octal, decimal, and hexadecimal, and allows for variable storage and code sharing.

**Highlights:** Basic and advanced calculation modes, Syntax parser, Variable storage and editing, Binary, octal, decimal, hexadecimal conversion, Built-in code examples, Code sharing via QR code or file

**In-app purchases:** none


### RPN

[App page](https://appshunter.io/ios/app/rpn/id6754224532)

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

**In-app purchases:** none


## Frequently asked questions

### Is PROG_CALC free?

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

### Is RPN free?

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

### Do PROG_CALC or RPN have ads?

Neither PROG_CALC nor RPN shows ads.

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

PROG_CALC ships an update every 2 weeks, and RPN every 6 months. Most recently, PROG_CALC was updated on November 3, 2026 and RPN on November 9, 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.*