10BII Calc HD is a business calculator featuring over 100 built-in functions for business, finance, mathematics and statistics. Easily calculate loan payments, interest rates, amortization, discounted cash-flow analyses, TVM (loans, savings, and leasing), bonds and depreciation using a simplified algebraic entry system. The keyboard and display have been carefully optimized for the iPhone, iPod Touch and iPad. Two keyboard layouts and multiple specialized worksheets allow you to do much more than a 10BII calculator while maintaining compatibility with the standard.

HD version includes:

• 2 for the price of 1! iPad and iPhone versions included- use on both your iPad and iPhone

• HD graphics included for iPad and iPhone retina displays

• iPad version includes full support for slide over and split views.

• New worksheets including interactive graphs.


•Time Value of Money- Loans, savings, leases and amortization schedules using both the standard keyboard and a specialized TVM solver window that displays the contents of all the variables for rapid "what if" solutions to your problems. View and mail amortization tables.

•Interest Conversion- Nominal and effective rates.

•Cash Flows- Net present value, internal rate of return, net future value and net uniform series calculations. Up to 80 cash flows are easily edited and reviewed using the dedicated cash flow editor screen. Entries are added, deleted and modified in a scrolling display with a touch interface unique to the iPhone.

•Business Percentages- Percent change, markup, and margin calculations.

•Statistics- Mean, standard deviation, correlation coefficient, and linear regression forecasting, weighted mean. Sample editor and plotter, forecasting using linear, log, exp or power fit.

•Conversions- 47 world currency rates and over 100 commonly used metric, english and other conversion factors used in financial, business, scientific and engineering calculations.

•Scientific- sin, cos, tan, asin, acos, atan plus the hyperbolic trig functions, conversion between rectangular and polar coordinates, conversion between degrees and radians, time functions including and, log, ln, 10^x, e^x, y^x, x root of y, fraction part and integer part. Trig functions can be computed in radians, degrees or gradians.

Auto Purchase
Cash Flow Analysis
Interest Conversion
Loan Amortization
Margin & Markup

Many of the worksheets include interactive graphs.

•Audit tape records all calculations. Tape can be mailed, texted or printed.

Discover how to use any function on the keyboard by touching the ? key then the key you want to learn about. Help screens are available for all worksheets.

Quote from a customer:

"Last week I had a meeting with my accountants and my bankers. We were working on the pro forma balance sheets and cash flows for a new project I'm working on.

They were all asking why I had switched to the iPhone for I used to be a die hard "brandX phone" fan. I said that one could do so much more. They said "yea...sure" (they were all using "brandX phones") until I started using your calculator. We were analyzing different payment and amortization schedules. They were so impressed by how easily we could figure out the amount of interest, principal and remaining loan balance for any certain period or combination of periods that in the end they were saying "I have to get me one of those".

 Great product. Thanks."

What’s New

Version 3.4

• Update to work around (more)bugs/changes in iOS12.3
• Improved currency conversion (again)

Ratings and Reviews

4.9 out of 5
421 Ratings

421 Ratings

vak1 ,

Better then original...

Used daily for almost eight years and it keeps getting better.

Key presses work the same so if you know original calculator you are set. Goes much further though - amortization table generation, GUI for cash flow and TVM much better then or original calculator. Ton of other GUI features so you get best of both words - if what you know works for you, use key press combo that you already know from original. But halos check new features - does things that original calculator can’t. I would recommend this program even to someone who never used original calculator.

If you need financial calculator, this program would likely pay for itself in first hour of use.

finance and flying ,

The only calculator I use

I’ve spent a couple hundred on financial calculators over the years. This one I paid for once and have continued using it through two phone upgrades. I’m the go to guy in the office for financial calculations or just basic math and this is what I use. It is the only one I will use. Thanks team and keep up the great work!
Update*** because I don’t remember how long it’s been since the last one. I still can’t go through my life without this calculator! I use it in business, personal finance, and even flight planning calculations. This is an everyday use usually multiple times per day. Thank you for making a great calculator and continuous updates.

fulltimemonti ,

Just purchased

So far so good, but....

The layout of the keys is going to take some getting used to. I understand it is supposed to mimic the 10bii, but I never liked their layout either. The blue/violet sub keys look like they should go with the button below, not the button above. Also, the icon is clean, which is nice, but a bit bright. Since I use a fin calculator a lot and keep it on my main page, the icon was a deciding factor in my purchase.

My biggest concern is that the developer keeps updating the app. Out of the available calcs I considered, this one had the longest gap since its last update. The last 10bii I bought stopped being supported and no longer worked with ios 13. Hopefully, I never run into that issue again with any app I paid for.

App Privacy

The developer, Ernest Brock, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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