# RPN vs AFrame Pro

The clearest difference is review sentiment: RPN at 90% against AFrame Pro's 36%. RPN also leads on rating (4.3 vs 2.0) and iOS requirement (12.0 vs 18.6). AFrame Pro's advantage is update cadence (every 5 weeks vs every 3 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

RPN costs $4.99 and AFrame Pro $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RPN holds the better App Store score, 4.3 against 2.0. Both are backed by a comparable volume of ratings — 6 and 4 respectively. Written reviews point the same way: 90% of RPN's written reviews are positive against 36% of AFrame Pro's.

RPN ships an update every 3 months, AFrame Pro every 5 weeks. Both last shipped on September 21, 2026.

## The numbers

| Metric | RPN | AFrame Pro |
| --- | --- | --- |
| Price | $4.99 | $4.99 |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/rpn-67-pro/id603103972/reviews)** | [2.0 (4 ratings)](https://appshunter.io/ios/app/aframe-pro-frame-analysis/id603996230/reviews) |
| Number of ratings | **6** | 4 |
| Positive reviews | **90.0% of reviews** | 36.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Paid | Paid |
| Size | 78 MB | 14 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [CuVee Software](https://appshunter.io/developer/424873503) | [Jutarus Ratanasethakul](https://appshunter.io/developer/1454380236) |

## What reviewers say

### RPN

[App page](https://appshunter.io/ios/app/rpn-67-pro/id603103972)

This app is a faithful simulation of a legendary 1970s programmable calculator, offering advanced features for scientists and engineers. It allows users to run existing programs, manage virtual program cards, and even print listings, all on their iPad.

**Highlights:** Virtual program and data cards, Virtual paper tape printer, Database-driven card manager, Save card collections to Mac/PC, Formatted program listings, Print listings via AirPrint, Live display of stack and registers

**Features:** macOS Compatibility

**In-app purchases:** none


### AFrame Pro

[App page](https://appshunter.io/ios/app/aframe-pro-frame-analysis/id603996230)

This application provides tools for 2D frame analysis using the stiffness matrix method. It offers detailed calculations and generates reports for shear force diagrams, bending moment diagrams, frame deformation, and support reactions. Results can be easily shared in PDF format.

**Highlights:** Stiffness matrix method for 2D frame analysis, Detailed frame calculations, Reports for SFD, BMD, deformation, and reactions, PDF export and email results, User-friendly interface

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RPN free?

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

### Is AFrame Pro free?

AFrame Pro costs $4.99, with no in-app purchases.

### Which has better reviews, RPN or AFrame Pro?

RPN is rated higher. RPN averages 4.3 out of 5 from 6 ratings, while AFrame Pro averages 2.0 from 4 ratings.

### Do RPN or AFrame Pro have ads?

Neither RPN nor AFrame Pro shows ads.

### Which is updated more often, RPN or AFrame Pro?

RPN ships an update every 3 months, and AFrame Pro every 5 weeks. Most recently, RPN was updated on September 21, 2026 and AFrame Pro on September 21, 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.*