---
title: "MathU 12D Financial Calculator - Reviews, Revenue and Downloads in United States | Apple App Store"
description: ""5 stars - This app is great.  Very Quick. Would highly recommend". See more in customer reviews.  MathU 12D, the Deluxe Financial RPN Calculator, is written from the ground up to behave exactly like "
---

# MathU 12D Financial Calculator — United States
> Surpasses the classic HP-12C

![MathU 12D Financial Calculator App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/b3/a8/db/b3a8dbc7-88dd-83f9-f764-0ecedd0fbb47/AppIcon-0-0-1x_U007emarketing-0-8-0-0-85-220.png/434x0w.png)

**Developer:** [Creative Creek](https://apptail.io/developer/creative-creek-Ius) (United States)
**Category:** Finance
**Rating:** 4.8/5 (83 ratings)
**Price:** Free
**Bundle ID:** com.creativecreek.MathU12C
**Store:** Apple App Store
**Country:** United States
**Version:** 4.1.4 (released 2026-05-15)
**Original Release:** 2010-07-13
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id379327689)
**AppTail Page:** [https://apptail.io/app/mathu-12d-financial-calculator-ZNid/united-states](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/united-states)

## MathU 12D Financial Calculator Description
"5 stars - This app is great.  Very Quick. Would highly recommend". See more in customer reviews.

MathU 12D, the Deluxe Financial RPN Calculator, is written from the ground up to behave exactly like and surpass the classic HP-12C.

MathU 12D uses the same RPN (Reverse Polish Notation) entry system and supports the same mathematical functions as the HP-12C. In fact, if you are familiar with the HP-12C you will be able to use MathU 12D right away.  Supports iPhone, iPad and macOS.  First released in 2010, the calculator continues to be updated with new features as iOS improves.

Made by Creative Creek, LLC.  We have been making calculators for mobile devices for over 25 years. Also check out MathU RPN, our advanced scientific and financial RPN calculator.

MathU 12D adds some big improvements over the original HP-12C:

1) Visible Financial Registers -- The values of the financial registers are displayed prominently above the associated buttons. This allows you to quickly verify that the loan parameters are correct and builds confidence in the results.

2) Computation Speed -- You will be amazed how quickly MathU 12D produces results.  Even complicated calculations like the determination of interest rate, IRR or NPV are finished in a fraction of a second.

3) Two line display -- A two line display can be chosen so that the x and y register values are always visible. You can immediately see results and verify input values.

4) Visible Programming -- Program lines are displayed using the function name instead of the key pad location.  This makes reading and writing MathU 12D programs easier.

5) 20 Registers unaffected by programs - The registers are not shared with the program space so you can create up to 99 line programs without sacrificing any storage space.

Documentation for MathU 12D is available from within the app.  All the functions work exactly the same as on the HP-12C, so if you are familiar with the HP-12C you will be able to use MathU 12D right away.

Features

- Fast and accurate computation based on 
   IEEE double precision (up to 16 digits)
- 5 financial registers (visible on the main screen)
- 20 storage registers
- Programmable with up to 99 program steps
- Program steps show function name directly
- Two line display
- FIX, SCI, and ENG display modes
- Access to on-line documentation
- Settings screen
- Thousands and decimal separators follow international format settings
- Copy and paste support
- Support for  iOS 8.x or higher.
- Support for iPhone and iPad

Functions Supported:

- Time value of money (N,i,PV,PMT,FV)
- Net Present Value (NPV)
- Internal Rate of Return (IRR)
- Simple interest
- Cash Flows (CF0, CFj, Nj)
- Bond pricing and yield (PRICE, YTM)
- Depreciation based on 
   - Straight line (SL)
   - Sum-Of-the-Years-Digits (SOYD)
   - Declining balance (DB)
- Date in future (DATE) or days between dates (DYS)
- Statistics mean, std, wieghted mean, factorial
- Percent, percent change and percent of total
- Linear curve fitting (x,r y,r)
- Scientific functions (y^x, e^x, sqrt, 1/x, ln)
- Integer and fractional parts (INTG, FRAC)

Requires iOS 16.6+

## MathU 12D Financial Calculator Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/2f/e2/0d/2fe20de0-f2ef-0085-980c-38206edfa983/pr_source.png/960x640.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/46/ef/a1/46efa1ab-080e-96b9-61d1-d1c5933dce22/pr_source.png/960x640.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/ef/d5/7f/efd57f6f-0e41-54b7-5936-de751cba5f6e/pr_source.png/960x640.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/8c/a9/5e/8ca95e78-732d-f3e1-547f-ac1cf949fc4f/pr_source.png/960x640.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/a3/9a/53/a39a532d-6e8d-d576-bbd9-ca57c1e4eb91/pr_source.png/960x640.png)

## MathU 12D Financial Calculator Rating Breakdown in United States
- 5 stars: 77 (93%)
- 4 stars: 2 (2%)
- 3 stars: 0 (0%)
- 2 stars: 1 (1%)
- 1 stars: 3 (4%)

## MathU 12D Financial Calculator Reviews in United States

### ****- "Very good"
Like this app very much.  Just like having a 12c
-- SJS Primary, 2021-01-02

### *---- "Freezes phone"
App freezes the phone. I have an iPhone XR.
-- VGSF, 2019-04-19

### ***** "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 Phool, 2018-11-05

### ***** "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!!!
-- AZOGG, 2018-01-30

### ***** "Better than the real thing!"
I have used the 12c since it was first sold by HP. I used its predecessor model, too. I use HP's virtual version on my laptop. 

This app is a seamless improvement on a classic design. Take this from a retired financier, this is the best financial calculator app! Update: Still using it with iOS 10.
-- CD Wyte, 2016-09-18

### ***** "Must-have for finance people"
So great that they created this with some additional functionality.  It disappeared from my iPhone after an iOS update, and I missed it almost as much as if I'd lost my phone entirely.
-- G3759, 2016-06-01

### *---- "Screen size update please!!"
My overall rating for the app is 5 stars, but my rating for the current version is 1! Please come out with an update to bring back full screen on the iPad. I would even pay again just to get the old version back!
-- Frustrated Josh, 2015-08-28

### ****- "New version"
Screen too small on iPad !!!!!!
In new version
-- Alimesoda1234, 2014-11-11

### *---- "App works great BUT"
The graphics are HORRIBLE
-- Cool colector, 2014-11-07

### ****- "Needs iPhone 5 update"
Word perfectly but keys are cramped. A simple iPhone 5 update would solve that.
-- fzfrank, 2014-02-02

[View all MathU 12D Financial Calculator reviews and detailed analytics on AppTail](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=reviews)


## MathU 12D Financial Calculator Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | United States | Finance | #17 |
| Top Paid | Brazil | Finance | #28 |
| Top Paid | Chile | Finance | #56 |
| Top Paid | Denmark | Finance | #86 |
| Top Paid | South Korea | Finance | #92 |
| Top Paid | Finland | Finance | #95 |
| Top Paid | Sweden | Finance | #97 |
| Top Paid | Netherlands | Finance | #100 |
| Top Paid | Israel | Finance | #101 |
| Top Paid | Spain | Finance | #112 |
| Top Paid | New Zealand | Finance | #113 |
| Top Paid | Switzerland | Finance | #114 |
| Top Paid | Austria | Finance | #123 |
| Top Paid | Japan | Finance | #127 |
| Top Paid | France | Finance | #131 |
| Top Paid | Mexico | Finance | #133 |
| Top Paid | Norway | Finance | #133 |
| Top Paid | Egypt | Finance | #134 |
| Top Paid | South Africa | Finance | #143 |
| Top Paid | Australia | Finance | #164 |
| Top Paid | Germany | Finance | #173 |
| Top Paid | Greece | Finance | #179 |
| Top Paid | Singapore | Finance | #180 |
| Top Paid | Dominican Republic | Finance | #184 |
| Top Paid | Italy | Finance | #186 |
| Top Paid | Portugal | Finance | #188 |
| Top Paid | Czechia | Finance | #189 |
| Top Paid | Canada | Finance | #189 |
| Top Paid | United Kingdom | Finance | #218 |
| Top Paid | Ireland | Finance | #222 |
| Top Paid | Hong Kong SAR China | Finance | #230 |
| Top Paid | Russia | Finance | #233 |



## MathU 12D Financial Calculator Available In
- [United States](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/united-states)
- [Brazil](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/brazil)
- [Canada](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/canada)
- [Netherlands](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/netherlands)
- [Denmark](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/denmark)
- [Mexico](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/mexico)
- [Australia](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/australia)
- [Switzerland](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/switzerland)
- [Spain](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/spain)
- [Ireland](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/ireland)
- [New Zealand](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/new-zealand)
- [Germany](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/germany)
- [Austria](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/austria)
- [Czechia](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/czechia)
- [Dominican Republic](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/dominican-republic)
- [Algeria](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/algeria)
- [Ecuador](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/ecuador)
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- [France](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/france)
- [United Kingdom](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/united-kingdom)
- [Greece](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/greece)
- [Hong Kong SAR China](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/hong-kong)
- [Croatia](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/croatia)
- [Hungary](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/hungary)
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- [Israel](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/israel)
- [India](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/india)
- [Iceland](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/iceland)
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- [Japan](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/japan)
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- [Luxembourg](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/luxembourg)
- [Latvia](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/latvia)
- [Madagascar](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/madagascar)
- [Malaysia](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/malaysia)
- [Nigeria](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/nigeria)
- [Norway](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/norway)
- [Nepal](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/nepal)
- [Peru](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/peru)
- [Philippines](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/philippines)
- [Pakistan](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/pakistan)
- [Poland](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/poland)
- [Portugal](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/portugal)
- [Romania](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/romania)
- [Russia](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/russia)
- [Saudi Arabia](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/saudi-arabia)
- [Sweden](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/sweden)
- [Singapore](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/singapore)
- [Slovenia](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/slovenia)
- [Slovakia](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/slovakia)
- [Thailand](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/thailand)
- [Tunisia](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/tunisia)
- [Türkiye](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/turkey)
- [Taiwan](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/taiwan)
- [Ukraine](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/ukraine)
- [Uzbekistan](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/uzbekistan)
- [Vietnam](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/vietnam)
- [United Arab Emirates](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/united-arab-emirates)
- [South Africa](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/south-africa)
- [Armenia](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/armenia)
- [Argentina](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/argentina)
- [Azerbaijan](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/azerbaijan)
- [Belgium](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/belgium)
- [Bulgaria](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/bulgaria)
- [Bahrain](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/bahrain)
- [Brunei](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/brunei)
- [Belarus](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/belarus)
- [Chile](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/chile)
- [China](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/china)
- [Colombia](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/colombia)
- [Cyprus](https://apptail.io/app/mathu-12d-financial-calculator-ZNid/cyprus)

---

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