RpnCalc - Rpn Calculator
Edward Falk Productivity
RpnCalc is the best RPN calculator on the Android Market.
- Rating
- 4.6
- 2K ratings
- Downloads
- 100K+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Nov 28
- 2017
Screenshots
About RpnCalc - Rpn Calculator
RpnCalc is the best RPN calculator on the Android Market.
It has an interface that users of the HP calculator line will be completely at home with, including these features:
Scientific mode
Basic (large key) mode
20 Memories
Key click (haptic feedback)
Continouous memory
16-level stack (configurable)
Front four stack elements displayed
RpnCalc has a sixteen-level stack to hold more data. The front four elements on the stack are visible at all times, making it much easier to keep track of where you are in your calculations.
"Calculator tape" records your calculations and can be shared via email, bluetooth, etc.
See http://www.efalk.org/RpnCalc/ for manual
Oh, and here's the privacy policy: RpnCalc never collects any private data of any sort. It never connects to the internet. It doesn't even run ads.
It has an interface that users of the HP calculator line will be completely at home with, including these features:
Scientific mode
Basic (large key) mode
20 Memories
Key click (haptic feedback)
Continouous memory
16-level stack (configurable)
Front four stack elements displayed
RpnCalc has a sixteen-level stack to hold more data. The front four elements on the stack are visible at all times, making it much easier to keep track of where you are in your calculations.
"Calculator tape" records your calculations and can be shared via email, bluetooth, etc.
See http://www.efalk.org/RpnCalc/ for manual
Oh, and here's the privacy policy: RpnCalc never collects any private data of any sort. It never connects to the internet. It doesn't even run ads.
What’s new
Updated November 28, 2017
Improved support for Samsung tablets
User reviews
It's great. I use an HP35s on my desk but this RPN app for everywhere else. I hope I don't get any snags now I've started using Android 11. Seems OK so far despite the warning at re-installation.
Works as described. Nice to have RPN on the go without having to bring my calculator. LOVING IT ❤
An excellent RPN calculator. Just like my HP15c.
Everything you need in an rpn calculator but with the added advantage of seeing the whole stack of values (Z T Y registers). The simple mode gives you an uncluttered keyboard which is great but scientific mode is still available. It's Easy to learn rpn. Give it a try.
The developer, Ed Falk was very approachable and helpful when I had a problem.
Brilliant. I now have a decent calculator on my mobile device. Seems to work just like my HP's
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| App | Rating | Price | Installs | Last updated |
|---|---|---|---|---|
| RpnCalc - Rpn Calculator | 4.6 / 5 | Free | 100,000+ | Nov 28, 2017 |
| Total Calculator | 4.7 / 5 | Free | 1,000,000+ | Jun 23, 2026 |
| Mobi Calculator | 4.7 / 5 | Free | 5,000,000+ | – |
| Percentage Calculator | 4.9 / 5 | Free | 1,000,000+ | Jul 27, 2025 |
| RealCalc Scientific Calculator | 4.4 / 5 | Free | 10,000,000+ | Aug 22, 2025 |
| CalcKit: All-In-One Calculator | 4.8 / 5 | Free | 1,000,000+ | Aug 23, 2026 |
| Calculator Plus | 4.2 / 5 | Free | 50,000+ | – |