Emulates classic Hewlett Packard RPN scientific calculators from the 1970s. Experience the original HP-35, HP-45, and HP-21 models on your iPhone.
5.0(5 ratings)
Free
Best apps like HP15C: Scientific Calculator
10+ similar apps compared and reviewed
4.7 avg rating
8 free apps
Updated July 2026
HP15C is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.
Top Alternatives to HP15C
3.1(7 ratings)
FreeIn-App Purchases
This app is a scientific and programmable calculator designed for science and engineering, replicating the functionality of the HP-11C. It offers extensive features for finance, business, statistics, complex numbers, and unit conversions, with a programmable interface for custom calculations.
HP 15c Calculator by MORAVIA Consulting, spol. s r.o.
Official emulator of HP 15cWorth Considering
🔧 Utilities
4.8😊(168 ratings)
$14.99
Experience the official emulator of the legendary HP 15c scientific calculator. This app offers a redesigned interface and modern look while preserving the precision and reliability of the original. It features RPN input, matrix calculations, complex functions, and numerical integration for professionals and students.
What We Love
- 🚀 Excellent emulation of original HP 15C
- 👍 Faithful reproduction of classic calculator
- 👍 Includes original manual
- 👍 Works just like the real thing
Room to Improve
- 🐛 Display issues in portrait mode
- 🐛 Bugs with programming and trig functions
- 🔇 Loud button click sound
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