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.
Features:
•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 h.ms+ and h.ms-, 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.
•Worksheets-
Auto Purchase
Black-Scholes
Bond
BreakEven
Cash Flow Analysis
Currency
Date
Depreciation
Interest Conversion
Lease
Loan Amortization
Margin & Markup
Refinance
Statistics
Tip
TVM
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."
When I was getting my degree in finance, I’ve discovered the HP 10 BIIp and found it to be vastly superior to the bold HP 9C with reverse Polish notation. I remember always being the first to get to the right answer in my appraisal class as all my classmates were still using the old HP 9C. That was 40 years ago.When I found this app, I was thrilled to have my most useful tool back in my pocket again.This calculator faithfully recreate the original 10 BII functionality, and adds a few other functions too. While I use things like the time value of money all the time, I also have found things like the conversion functions that allow you to convert various measurements such as imperial to metric or volume area, weights, etc. to be extremely useful.All around the great products that has proven to be reliable, convenient, and indispensable. The only thing I wish that it had would be a fractional calculator to allow me to use it when I am doing woodworking, but of course, that was never a part of the 10 BII.
Great business calculator for daily use
JC in CA
I have had this calculator for many years. I am a category manager for a grocery chain and use this calculator daily. I have had several business calculators on my desk over the years but they all eventually stopped working. This calculator will never break or stop working. It always transfers to my new phone every time I upgrade my phone. And, I no longer have to have another piece of equipment to manage. The part part is the functionality of the calculator. It does more than any traditional calculator I have ever owned. The best part is that the developer is open to feedback and keeps the app up-to-date every time the operating system updates. I have never had an issue with it not working. So, if you are looking for a business calculators, you will be 100% satisfied. I am for sure.
The only calculator I use
finance and flying
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.
Excellent app
ThorRuss
August 2025: another update. Still a great app. Update February 2025 - developer updated app again. Still the best HP calculator app out there. Best $ I spent on apps probably 10+ years in. Update June 2021- updated again. Still a great app. Update: April 2, 2019- just updated. Still the best HP app out there. Developer support has been great over the many years I’ve used this. Highly recommended. Update: Oct. 3, 2017- Another great app. I strayed recently, trying other HP Finance Calc apps. This is still the best... by far. Update: March 28, 2017- Great app before, and following recent update. I've downloaded several financial calculator apps. Ernest Brock's HP-inspired apps are the best. I highly recommend Original Review Best financial calc app for any device that I've ever had. Printing option could be a little more reliable, but even without the printing option this app deserves 5 stars. Updated: been using the app for several years now, and still very happy with it. Recently had a problem, app developer responded within an hour correcting the issue.
• Restored memory save between uses
• More iOS26 fixes
Version 3.8
The developer, Ernest Brock, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Ernest Brock
Size
4.2 MB
Category
Finance
Compatibility
Requires iOS 17.6 or later.
iPhone Requires iOS 17.6 or later.
iPad Requires iPadOS 17.6 or later.
Mac Requires macOS 14.6 or later and a Mac with Apple M1 chip or later.
