|RPN| Scientific Calculator vs TimecodeRPN
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
|RPN| Scientific Calculator
This calculator app uses Reverse Polish Notation for powerful calculations. It offers customizable color schemes, layouts, and online help, designed for flexibility and usability. All features are unlocked with a one-time purchase.
- Reverse Polish Notation (RPN)
- Viewable stack
- Selectable portrait/landscape layouts
- Customizable color schemes
- Online visual help
- No ads or in-app purchases
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|RPN| Scientific Calculator is a calculator which features a variety of color schemes and layouts. It utilizes Reverse Polish Notation, a viewable stack, selectable portrait and landscape layouts, online visual help and many more. The application is meant to be as flexible and powerful as possible, without sacrificing usability. |RPN| does not have ads, and never will, nor does it use in-app purchases. All functionality comes with the purchase. Here is a youtube playlist with some helpful videos: https://www.youtube.com/playlist?list=PLucgGVHO2sKhnnNf1gapHS4Zy7u69VGAs
TimecodeRPN
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This is a RPN timecode calculator styled after the HP calculators of old.
Screenshots
Verdict
The clearest difference is update cadence: TimecodeRPN at every 2 days against |RPN| Scientific Calculator's fortnightly. TimecodeRPN also leads on chart position (#200 vs unranked). |RPN| Scientific Calculator's advantage is device support (4 vs 1). On price, ads, in-app purchases and iOS requirement 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
|RPN| Scientific Calculator costs $0.99 and TimecodeRPN $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
|RPN| Scientific Calculator ships an update fortnightly, TimecodeRPN every 2 days. The most recent releases landed on September 22, 2026 and June 22, 2026 respectively.
| Parameter | |RPN| Scientific Calculator | TimecodeRPN |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 2.3 (3 ratings) — better | — |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Fortnightly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | — | #200 — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone |
| Requires iOS | 16 — better | 17.6 |
| Further details — not scored | ||
| Size | 2 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Bradley Smith | Denis Leconte |
In-app purchases
|RPN| Scientific Calculator
No in-app purchases
TimecodeRPN
No in-app purchases
