MathU 12D Financial Calculator

Name: MathU 12D Financial Calculator
Rating: 4.8 (83 reviews)
Author: Creative Creek, LLC

by Creative Creek, LLC

iPhone · iPad

Active Last checked 31 Jul 2026

App Store ↗

Quick verdict

What it is: Store information collected; independent summary not yet available.
At a glance: $4.99

Categories and search queries

Official categories

Finance
Utilities

AppCorpus categories

Key functions

Function	Availability	Access	Scope	Evidence
Family Sharing	Yes	Unknown	App Store	Store published

Screens

App Store

9 store screenshots

Pricing & paywalls

App Store

Price: $4.99

Last verified 31 Jul 2026

Ratings & reviews

App Store

4.8 83 ratings · App Store

5/5Not 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 · 31 Jul 2026
5/5Better 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 · 31 Jul 2026
5/5PERFECT 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 · 31 Jul 2026
5/5Must-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 · 31 Jul 2026
4/5New version
Screen too small on iPad !!!!!! In new version

Alimesoda1234 · 31 Jul 2026

Privacy & accessibility

App Store

Privacy

Data Not Collected Developer declared

Accessibility

No accessibility labels collected yet.

Versions

App Store

1.0
1.1
MathU 12C v1.1 includes a few minor improvements: ------------------- Please rate MathU 12C in the AppStore or in iTunes after you purchase it. Even though there are several (all 5 star) reviews below, the AppStore still shows this application as having No Ratings. -------------------
1.1.1
This is a bug fix release: [f] clear [REG] now correctly clears the stack as well as the registers. Previous releases only cleared the registers. Thanks to everyone who alerted me to this bug. If you haven't already, please select a star ratting for MathU 12C in the AppStore or in iTunes. Let other users know how much you like MathU 12C!
1.3
- Changed name of the application to MathU 12D - New soft deerskin display
1.3.1
- Changed name of the application to MathU 12D - New soft deerskin display - Fix a problem with the Quick Reference.
2.0.0
MathU 12D 2.0 adds: o Support for iPhone 6 and iPhone 6 plus o Support for iOS 8.x o New iPad interface that rotates the calculator when the iPad is rotated. o Bug fix for iOS 8.x
2.0.1
MathU 12D 2.0 adds: o Support for iPhone 6 and iPhone 6 plus o Support for iOS 8.x o New iPad interface that rotates the calculator when the iPad is rotated. o Bug fixes for iOS 8.x MathU 12D 2.0 supports iOS 5.1.1 or higher (including iOS 8).
2.0.3
MathU 12D, the Deluxe Financial RPN Calculator, is written from the ground up to behave exactly like and surpass the classic HP-12C. New in version 2.0.3: Compatibility release for iOS 11.x MathU 12D supports iPhone and iPad running iOS 8.0 or higher.
2.0.4
Compatibility release for iOS 11.x. Fixes a few issues in the 2.0.3 release.
2.1
MathU 12D 2.1 adds support for iOS multitasking, split screen and iOS 13 as well a supporting a 2X larger keypad on iPad. This update is recommended for all users with iPhone or iPad running iOS 9.3 or higher except iPhone 4s.
2.2
MathU 12D 2.2 adds support for iOS multitasking, split screen and iOS 13 as well a supporting a 2X larger keypad on iPad. This update is recommended for all users with iPhone or iPad running iOS 9.3 or higher except iPhone 4s. New for the 2.2 update is improved built-in documentation, improved support for Dark Mode, and bug fixes.
2.2.1
MathU 12D 2.2.1 adds support for iOS multitasking, split screen and iOS 13 as well a supporting a 2X larger keypad on iPad. This update is recommended for all users with iPhone or iPad running iOS 9.3 or higher except iPhone 4s. New for the 2.2.1 update is improved built-in documentation, improved support for Dark Mode, bug fixes for iOS 10.x-12.x, and bug fixes.
2.2.2
MathU 12D 2.2.2 adds support for iOS multitasking, split screen and iOS 14 as well a supporting a 2X larger keypad on iPad. This update is recommended for all users with iPhone or iPad running iOS 9.3 or higher except iPhone 4s. New for the 2.2.2 update is improved built-in documentation, improved support for Dark Mode, fixes for iOS 10.x-13.x, and other bug fixes (including an issue when using the France region's number separators).
4.0.0
MathU 12D 4.0.0 adds - support for a bluetooth keyboard so you can "press" buttons by typing the name of the key on the calculator. - support for iOS 16.x and iOS 17.x. MathU 12D 4.0.0 also runs on macOS with Apple Silicon!
4.0.1
MathU 12D 4.0.1 adds: - support for bluetooth keyboard so you can "press" buttons by typing the name of the key on the calculator - support for iOS 16.x and iOS 17.x - bug fix for copy & paste feature that wasn't working with MathU 12D 4.0.0 MathU 12D also runs on macOS with Silicon!
4.0.2
MathU 12D 4.0.2 adds: - support for bluetooth keyboard so you can "press" buttons by typing the name of the key on the calculator - support for iOS 16.x and iOS 17.x - bug fix for copy & paste feature that wasn't working with MathU 12D 4.0.0 - bug fix for random crashes MathU 12D also runs on macOS with Silicon!
4.1.0
We are excited to announce that MathU 12D runs on macOS as well as iOS! Both Intel and Apple Silicon is supported for macOS. 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.
4.1.2
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 4.1.2 releases fixes a of couple of minor bugs I noticed after the last 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.
4.1.3
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 4.1.3 release fixes a of couple of minor bugs I noticed after the 4.1.0 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.
4.1.4 · 15 May 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.

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Availability by market

Data quality & evidence

Page completeness: Live store listing
Last verified: 31 Jul 2026
Sources: App Store

Independent summary has not been published yet.

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GET /api/v3/apps/379327689

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      "notes": "MathU 12C v1.1 includes a few minor improvements: ------------------- Please rate MathU 12C in the AppStore or in iTunes after you purchase it. Even though there are several (all 5 star) reviews below, the AppStore still shows this application as having No Ratings. -------------------"
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      "notes": "MathU 12D 2.0 adds: o Support for iPhone 6 and iPhone 6 plus o Support for iOS 8.x o New iPad interface that rotates the calculator when the iPad is rotated. o Bug fixes for iOS 8.x MathU 12D 2.0 supports iOS 5.1.1 or higher (including iOS 8)."
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      "version": "2.0.3",
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      "notes": "MathU 12D, the Deluxe Financial RPN Calculator, is written from the ground up to behave exactly like and surpass the classic HP-12C. New in version 2.0.3: Compatibility release for iOS 11.x MathU 12D supports iPhone and iPad running iOS 8.0 or higher."
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      "version": "2.0.4",
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      "version": "2.1",
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      "notes": "MathU 12D 2.1 adds support for iOS multitasking, split screen and iOS 13 as well a supporting a 2X larger keypad on iPad. This update is recommended for all users with iPhone or iPad running iOS 9.3 or higher except iPhone 4s."
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      "version": "2.2.1",
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      "store": "apple",
      "version": "2.2.2",
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      "notes": "MathU 12D 2.2.2 adds support for iOS multitasking, split screen and iOS 14 as well a supporting a 2X larger keypad on iPad. This update is recommended for all users with iPhone or iPad running iOS 9.3 or higher except iPhone 4s. New for the 2.2.2 update is improved built-in documentation, improved support for Dark Mode, fixes for iOS 10.x-13.x, and other bug fixes (including an issue when using the France region's number separators)."
    },
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      "version": "4.0.0",
      "released_at": null,
      "notes": "MathU 12D 4.0.0 adds - support for a bluetooth keyboard so you can \"press\" buttons by typing the name of the key on the calculator. - support for iOS 16.x and iOS 17.x. MathU 12D 4.0.0 also runs on macOS with Apple Silicon!"
    },
    {
      "store": "apple",
      "version": "4.0.1",
      "released_at": null,
      "notes": "MathU 12D 4.0.1 adds: - support for bluetooth keyboard so you can \"press\" buttons by typing the name of the key on the calculator - support for iOS 16.x and iOS 17.x - bug fix for copy & paste feature that wasn't working with MathU 12D 4.0.0 MathU 12D also runs on macOS with Silicon!"
    },
    {
      "store": "apple",
      "version": "4.0.2",
      "released_at": null,
      "notes": "MathU 12D 4.0.2 adds: - support for bluetooth keyboard so you can \"press\" buttons by typing the name of the key on the calculator - support for iOS 16.x and iOS 17.x - bug fix for copy & paste feature that wasn't working with MathU 12D 4.0.0 - bug fix for random crashes MathU 12D also runs on macOS with Silicon!"
    },
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      "store": "apple",
      "version": "4.1.0",
      "released_at": null,
      "notes": "We are excited to announce that MathU 12D runs on macOS as well as iOS! Both Intel and Apple Silicon is supported for macOS. 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."
    },
    {
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      "version": "4.1.2",
      "released_at": null,
      "notes": "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 4.1.2 releases fixes a of couple of minor bugs I noticed after the last 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."
    },
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      "notes": "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 4.1.3 release fixes a of couple of minor bugs I noticed after the 4.1.0 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."
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      "released_at": "2026-05-15",
      "notes": "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."
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