RPN vs gcAE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RPN
This app is a photo-realistic simulation of a classic scientific calculator, offering advanced programming capabilities beyond the original model. It includes a comprehensive set of mathematical functions and features for easy program management and sharing.
- Photo-realistic calculator simulation
- Fully programmable with 99 steps
- Extensive scientific and statistical functions
- Program library and sharing options
- Import and export programs
- 44 pre-installed programs
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RPN-32 CE is the first photo-realistic simulation of Hewlett-Packard's popular mid-range scientific calculator HP-32E for the iPhone. Produced from 1978 through 1983, it was the "Thyme" member of the third-generation HP calculators known as the "Spice" series. While the simulator works like the original calculator, a number of carefully designed extensions make it a lot easier to use. Unlike the HP-32E, this version is fully programmable, running virtually all programs written for the HP-25! Features: • Photo-realistic look-and-feel • Programmable (99 steps), subroutines, flags, loop control, branching • Insert and delete steps with automatic address correction • 20 registers, "continuous", with unrestricted store/recall arithmetic • Indirect register addressing • "Live" register view • Program listing view • Program library view • Store and retrieve any number of programs • Sharing: e-mail, AirDrop, Dropbox, copy, paste, print • 44 programs pre-installed • Import GO-25 programs • Export programs to RPN-25 CE Calculator functions: • Statistics (mean, standard deviation, linear regression, normal distribution) • Factorial • Trigonometric functions (degrees, radians, grads) • Polar/rectangular conversions • Hyperbolics • Inverse, square root, logarithm, exponential, pi • Storage arithmetic (store and recall) • Percent change • Percentage of Total • Unit and hours conversions • Many additional functions not found on the HP-32 Details: cuveesoft.ch/rpn32
gcAE
Enhance your geocaching experience with a helper tool that streamlines interactions on geocaching websites. It offers a Safari extension for quick actions like copying codes and links, and can automatically clean up website elements for a better view.
- Safari extension for quick actions
- Copy geocache codes and links
- Create calendar entries
- Open geocaches in other apps
- Solve reverse caches
- Remove website disclaimers and ads
- Display favorite percentage
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gcAE is a small helper tool for interacting with geocaching websites. It all started with an action extension to easily perform some actions on geocaching websites. New with gcAE 4.0 a real iOS 15 Safari extension is included. This way the actions are even faster reachable. Use the main app to configure the actions you want to see on geocaching websites. The following are available: - Copy gc code to clipboard - Copy gc link to clipboard - Copy personal notes to clipboard - Copy gc link and personal notes to clipboard - Copy listing coordinates to clipboard - Create a calendar entry (requires to send a local notification which you have to click) - Open geocache in one of your installed geocaching apps like Cachly - Open the coordinates in one of your installed navigation apps - Solve reverse caches (-waldmeister- reverse cache works best; also basic support for day1976 reverse cache. See Wiki Entry) There are also actions available which will be automatically performed on the geocaching website when switched on - Remove disclaimer banner - Show hint decrypted - Remove ads - Remove print section - Clean attributes area - Clean inventory area - Remove map - Clean other links - Automatically load and display favorite percentage There is a variation of geocaching and navigation apps supported. The main app will list the ones you have installed. The previous action extension is still available and covers all the actions the new Safari extension does. With the action extension you can also pass the gc code from publish emails to your geocaching app. Just long press the link in the email, select share and gcAE. You then have the option to open the gc code in your geocaching app ---- Coordinates on geocaching.com are only visible if you have an account there.
Screenshots
Verdict
The clearest difference is price: gcAE at Free against RPN's $1.99. RPN's advantage is in-app purchases (none vs 4) and ratings volume (9 vs 2). On rating, review sentiment, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
gcAE is free to download; RPN costs $1.99 up front. gcAE sells 4 one-off in-app purchases. RPN asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for RPN against 5.0 for gcAE. Both are backed by a comparable volume of ratings — 9 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
RPN ships an update every 3 months, gcAE every 2 months. The most recent releases landed on November 4, 2026 and November 2, 2026 respectively.
| Parameter | RPN | gcAE |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 5.0 (9 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 9 — better | 2 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 14 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | CuVee Software | Andre Albach |
Customer experience
RPN
gcAE
In-app purchases
RPN
No in-app purchases
gcAE
- Donate small cup of coffee$0.99
- Reverse Cache Solver$0.99
- Donate cup of coffee$1.99
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- Donate large cup of coffee$2.99









