# FlashMyPin vs RPN

The clearest difference is review sentiment: RPN at 100% against FlashMyPin's 0%. RPN also leads on update cadence (every 3 months vs every 22 months) and price ($1.99 vs $2.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

FlashMyPin costs $2.99 and RPN $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

FlashMyPin ships an update every 22 months, RPN every 3 months. The most recent releases landed on October 16, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | FlashMyPin | RPN |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | — | **[5.0 (8 ratings)](https://appshunter.io/ios/app/rpn-55-sd/id1469907917/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 3 months** |
| Monetization | Paid | Paid |
| Size | 20 MB | 17 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alchemist79 UG (haftungsbeschraenkt)](https://appshunter.io/developer/1111234259) | [CuVee Software](https://appshunter.io/developer/424873503) |

## What reviewers say

### FlashMyPin

[App page](https://appshunter.io/ios/app/flashmypin/id1289830253)

This app simplifies entering PINs for smart power meters. Instead of manually blinking a flashlight, you type your PIN, and the app flashes your phone's camera in the correct Morse code pattern. It's a fast, simple, and efficient way to input meter codes.

**Highlights:** Enter PINs via phone camera flash, Morse code blinking signals, Saves time and reduces errors, Intuitive user interface, No ads or registration required

**Features:** Vision Pro support

**In-app purchases:** none


### RPN

[App page](https://appshunter.io/ios/app/rpn-55-sd/id1469907917)

This app is a photo-realistic simulation of a classic Hewlett-Packard programmable scientific calculator from the 1970s. It includes a 100-hour digital timer, clock functions, and original HP programs.

**Highlights:** Photo-realistic look-and-feel, Programmable with conditional branching, 100-hr timer and 12/24-hr clock, Original HP programs built-in, Extended features for enhanced usability, Sharing via email, AirDrop, and more

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FlashMyPin free?

FlashMyPin costs $2.99, with no in-app purchases.

### Is RPN free?

RPN costs $1.99, with no in-app purchases.

### Do FlashMyPin or RPN have ads?

Neither FlashMyPin nor RPN shows ads.

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

FlashMyPin ships an update every 22 months, and RPN every 3 months. Most recently, FlashMyPin was updated on October 16, 2026 and RPN on October 20, 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.*