3.2 Safe to install
RPN-70 HD: Powerful Calculator with a Modern Twist

RPN-70 HD combines classic RPN functionality with a sleek, modern interface, making complex calculations intuitive and accessible to all users.
The RPN-70 HD serves as a comprehensive and photo-realistic simulation of the HP-70 financial calculator, a classic model from 1974. It adeptly manages functions such as loan amortization, savings plans, depreciation, and more, ensuring usability for a range of finance-related tasks.
User feedback has been largely positive:
- "It's challenging to find a decent calculator on iPad; I recommend trying this one."
- "I typically don’t write reviews, but RPN-70 has truly impressed me. Apple should categorize this app under Education in the App Store; it’s essential for any college-bound student. It stands out as the best HP emulator available."
- "An exceptionally well-engineered calculator app, and it's free!"
- "This is an outstanding financial calculator that closely mirrors the original HP-70, providing accuracy down to the penny."
Key features include:
- Photo-realistic aesthetics based on the original device
- "Live" register view when in landscape mode
- Animated keys accompanied by adjustable click sounds
- Comprehensive implementation of all HP-70 functions and operations
- Optional simulation of the HP-70’s computation time
- Ability to correct erroneous entries by swiping left across the display
- Cut, copy, and paste functionality for display values
- Visual indicators for tracking stored input parameters (optional)
- Display of stack just below the main display (optional)
- Ten non-volatile memory registers (optional)
- A built-in manual featuring numerous examples
The HP-70 was discontinued within a year of its release, making it one of the rarest calculators now difficult to locate in any condition.
Note: The RPN-70 HD accurately simulates the vintage HP-70, verified against an actual device using examples from the HP-70 manual's Applications Cookbook section. Occasionally, what may seem like an app bug could be an inherent quirk of the original HP-70 device.
Important: The HP-70 requires precisely three input parameters from the top-row keys, with at least one being either "n" or "i". Therefore, using PMT, PV, and FV as input parameters simultaneously is not permissible.
A version for the iPhone known as "RPN-70 SD" is also available.
For more information, visit: www.cuveesoft.ch
Overview
RPN-70 HD is a Freeware software in the category Business developed by CuVee Software.
The latest version of RPN-70 HD is 3.2, released on 01/01/2025. It was initially added to our database on 01/01/2025.
RPN-70 HD runs on the following operating systems: iOS.
Users of RPN-70 HD gave it a rating of 5 out of 5 stars.

Pete Milner
I'm Pete, a software reviewer at UpdateStar with a passion for the ever-evolving world of technology. My background in engineering gives me a unique insight into the intricacies of software, allowing me to provide in-depth, knowledgeable reviews and analyses. Whether it's the newest software releases, tech innovations, or the latest trends, I'm here to break it all down for you. I work from UpdateStar’s Berlin main office.
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