1. Home
  2. 💰 Finance
  3. MathU 12D Financial Calculator
MathU 12D Financial Calculator

MathU 12D Financial Calculator

Surpasses the classic HP-12C

71 ratings
26 reviews
#136 in paid Finance
🔧 Utilities
💰 Finance
$24.99 $4.99
↓

Price history

Details

  • Released
  • Updated
  • July 13, 2010
  • May 15, 2026

Developer

Creative Creek, LLC
✨Promote your app ✨
MathU 12D Financial Calculator screenshot #1 for iPhone
MathU 12D Financial Calculator screenshot #2 for iPhone
MathU 12D Financial Calculator screenshot #3 for iPhone
📉--80.03%
Price change↘︎
📉no. 136
Charts↘︎
⭐26
Reviews↘︎
📝1+ tags
Tags↘︎
🔄6+ apps
Alternatives↘︎
❓8 answered
FAQ↘︎
📦~ in 1 month
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

About

This app offers a powerful financial calculator with Reverse Polish Notation (RPN) that emulates and enhances the classic HP-12C. It provides visible financial registers, fast computations, and a two-line display for improved usability and accuracy in financial calculations.

✓RPN entry system
✓Visible financial registers
✓Fast computation speed
✓Two-line display option
✓Visible programming
✓Programmable up to 99 steps
✓Time value of money functions
Show original description

What's New in MathU 12D Financial Calculator

4.1.4

May 15, 2026

We are excited to announce that MathU 12D runs on macOS as well as iOS! Both Intel and Apple Silicon is supported for macOS. The 4.1.4 release fixes a minor layout bug I noticed after the previous release went live. Enjoy! All the calculator functions work on iPhone, iPad, and macOS. Keyboard support: An attached external keyboard can be used with the calculator to access the functions (type of name on the top if a button). Tap the Key Help button to see what strings will work to "press" a button on the keypad.

More

Charts

Top Paid

📉 136-1

Finance

This app dropped -1 position in Finance chart.

Last updated on July 20, 2026.

User reviews

Most RecentHighest RatedLowest Rated

Very good

Like this app very much. Just like having a 12c
SJS PrimarySJS Primary

Freezes phone

App freezes the phone. I have an iPhone XR.
VGSFVGSF

Not able to move off app - forces restart

iPhone XR - app works , but once you start it , you are stuck on the app until you do a restart. Keeping 5 stars for now since the performance over the last 5 plus years has been perfect until now.
Philly PhoolPhilly Phool

PERFECT HP 12 C !!!

I too have been using a 12C since it first came on the market 35+ years ago - Yikes! - But wanting not to carry an actual 12C around I discovers this WONDERFUL App 4 years ago! Its always worked PERFECTLY! No need to buy the “competition” - this free app does the job!!!! Thanks!!!
AZOGGAZOGG

MathU 12D -Brilliant

I have loved the HP RPN calculators, and bought an 11C when I graduated in 1983. However it didn't do date calcs. This version does. The calculator is great on an iPhone 4 and even better on iPhone 6.
mkhpdmkhpd
See 21 more reviews

Developer apps

MathU RPN Calc
MathU RPN Calc

Advanced scientific calculator

💰 Finance

(87)

$24.99
See developer apps

FAQ

What is MathU 12D?

MathU 12D is a financial calculator app designed to emulate and surpass the functionality of the classic HP-12C. It uses Reverse Polish Notation (RPN) and offers enhanced features like visible financial registers and faster computation.

Is MathU 12D easy to use for HP-12C users?

Yes, MathU 12D is built to behave exactly like the HP-12C, using the same RPN system and mathematical functions. If you are familiar with the HP-12C, you should be able to use MathU 12D immediately.

What are the key improvements MathU 12D offers over the HP-12C?

MathU 12D features visible financial registers, significantly faster computation speeds, a two-line display for better visibility, and visible programming that displays function names instead of keypad locations.

What devices does MathU 12D support?

MathU 12D is available for iPhone, iPad, and macOS. It requires iOS 8.x or higher.

How much does MathU 12D cost?

MathU 12D is a paid application priced at $4.99. It does not have in-app purchases or ads.

How often is MathU 12D updated?

MathU 12D was first released in 2010 and continues to be updated with new features as iOS improves. The latest version is 4.1.3, last updated on February 23, 2026.

What financial functions does MathU 12D support?

MathU 12D supports a wide range of financial functions including time value of money (N, i, PV, PMT, FV), NPV, IRR, cash flows, bond pricing, and various depreciation methods.

What is the user sentiment for MathU 12D?

User reviews indicate positive sentiment, with one customer review stating, '5 stars - This app is great. Very Quick. Would highly recommend'. The app has an average rating of 4.1 stars from 16 ratings.