# 10BII Calc HD

> Advanced business and finance calculator with over 100 functions and specialized worksheets. (iPhone/iPad app by Ernest Brock.)

- Source: https://appshunter.io/ios/app/10bii-calc-hd/id382452060 (this page in markdown: same URL + `.md`)
- Developer: [Ernest Brock](https://appshunter.io/developer/289555912)
- Category: Finance, Business
- Price: $8.99
- Rating: 4.90/5 from 3,729 App Store ratings · 740 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.6 · 4 MB
- Languages: American English
- Released: 2010-09-20
- Data updated: 2026-08-30
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/10bii-calc-hd/id382452060/reviews.md

## What is 10BII Calc HD?

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."

## Key features

- Over 100 business, finance, math, and statistics functions
- Time Value of Money calculations with TVM solver
- Cash flow analysis with dedicated editor
- Statistical analysis and forecasting
- Currency and unit conversions
- Interactive graphs and audit tape

## Chart rankings

- #3 in Top Paid · Finance (US App Store)
- #186 in Top Grossing · Finance (US App Store)

## What do users think of 10BII Calc HD?

Overall sentiment: positive

**Pros**

- 🚀 Outstanding app
- 🚀 Great product
- 🚀 Great financial calculator
- 🚀 iPad keyboard support
- 🚀 Best financial calculator app
- 🚀 Excellent 10BII
- 🚀 Great financial calc
- 🚀 Simply the Best!
- 🚀 Great financial calculator, the best!
- 🚀 Best HP calc simulator available!
- 🚀 Great app
- 🚀 Ease of Use
- 🚀 Works great
- 🚀 Can't work without it!
- 🚀 Best in the business
- 🚀 Best Financial Calculator for the $
- 🚀 Excellent
- 🚀 Great app!
- 🚀 Convenient
- 🚀 A must have
- 🚀 Wonderful App
- 🚀 I love it!
- 🚀 Great financial calculator
- 🚀 Outstanding
- 🚀 Great for CFP® TVM calculations
- 🚀 Better than the real thing
- 🚀 The best!
- 🚀 Excellent financial calculator
- 🚀 Great calculator!
- 🚀 Indispensable!
- 🚀 Awesome App
- 🚀 Perfect for CFP exam
- 🚀 Trustworthy financial tool
- 🚀 The best business calculator ever
- 🚀 Works just like my actual HP Calculator!
- 🚀 Excellent
- 🚀 Awesome!!
- 🚀 The Best...don't waste your time with others
- 🚀 Excellent calculator
- 🚀 Works Perfect!
- 🚀 Phone calculator App
- 🚀 Front screen app!
- 🚀 Great app
- 🚀 Perfect app
- 🚀 Just Like the Physical Calculator
- 🚀 Powerful, easy to use, finely created
- 🚀 Excellent calculator!
- 🚀 My one and only
- 🚀 Great App, Great Support
- 🚀 Best calculator app! 10/10
- 🚀 Great app worth the cost
- 🚀 Amazing App!!
- 🚀 Great Financial App
- 🚀 Perfect convenience
- 🚀 Brilliant App
- 🚀 great app!!
- 🚀 Best financial calculator
- 🚀 Worth it!
- 🚀 Worth every penny

**Cons**

- 🐛 Doesn't retain my stored values in the registers once the app is closed on my IPhone Pro

**Commonly reported bugs**

- Loan payment calculation issue after update

**Most requested features**

- RPN mode
- Canadian mortgage support

## Recent user reviews (10 of 740)

All indexed reviews: https://appshunter.io/ios/app/10bii-calc-hd/id382452060/reviews.md

### 5/5 — Da Review

*2026-08-13, version 3.8*

Still using, it seriously continues to GROW ON You! Glad for the updates, and your continued willingness. Please, CONTINUE the GREAT programming. KennyW
STILL GREAT programming…

### 5/5 — Great for CFP studying

*2026-08-08, version 3.8*

Want to study financial calculations but forgot your calculator at work, downstairs, in the bottom of your bag and don’t want to dig it out? You got it.

Worried you lost your calculator and want to wait a week before you buy a new one because it’s probably just misplaced? Handled. Highly recommend.

### 5/5 — Great financial calculator!

*2026-08-07, version 3.8*

Have used for years without a problem.

### 5/5 — Mr T

*2026-07-30, version 3.8*

Excellent

### 5/5 — Amazing app

*2026-07-29, version 3.8*

I am using it daily for 25 years now. The financial settings and the conversion table are my main usage. I also often use the « tape » option to look backward to my past calculations. It has always works great and is constantly updated. Thanks you!

### 5/5 — Great calc

*2026-07-24, version 3.8*

Excellent app!!

### 5/5 — Great Calculator,

*2026-07-21, version 3.8*

Work well and great calculator all area,

### 5/5 — Excellent update!

*2026-07-21, version 3.8*

Excellent upgrade- thanks for your diligent effort to support this app!

### 5/5 — Excellent Calculator

*2026-07-21, version 3.8*

I have owned and used the actual 10BII calculator for years before downloading this app.  I have since quit using the actual calculator as the app is the exact same and already located on my phone, which is with me at all times. Very convenient and works perfectly!

### 5/5 — Great App

*2026-07-16, version 3.8*

Provides needed information quickly with ease.

## Frequently asked questions about 10BII Calc HD

### What does 10BII Calc HD do?

10BII Calc HD is a powerful business and finance calculator that provides over 100 built-in functions for complex calculations. It simplifies tasks related to loans, interest rates, amortization, cash flow analyses, and statistics, making it suitable for professional and academic use.

### What are the key features of 10BII Calc HD?

Key features include Time Value of Money calculations with a dedicated solver, comprehensive cash flow analysis tools, statistical functions for mean, standard deviation, and regression, currency and unit conversions, and specialized worksheets for various financial scenarios. It also offers interactive graphs and an audit tape to record all calculations.

### How much does 10BII Calc HD cost?

The application is a paid app. The HD version includes both iPad and iPhone versions, offering 2 for the price of 1. Specific pricing details can be found on the app store listing.

### What devices is 10BII Calc HD compatible with?

The app is optimized for iPhone, iPod Touch, and iPad. The HD version specifically includes full support for iPad's slide over and split views, and HD graphics for retina displays on both iPad and iPhone.

### What are common use cases for 10BII Calc HD?

Common use cases include calculating loan payments and amortization schedules, performing discounted cash-flow analyses, evaluating investment opportunities using Net Present Value and Internal Rate of Return, conducting statistical forecasting, and converting currencies. It's also useful for business percentage calculations like markup and margin.

## Version history (last 5 releases)

### 3.8 — 2025-11-19

• Restored memory save between uses
• More iOS26 fixes

### 3.7 — 2025-08-14

•Update for iOS changes
• Fixed currency worksheet dark mode

### 3.6 — 2025-03-03

Update for iOS 18

### 3.5 — 2021-10-14

• Updated for iOS15
• Added dark mode
• Added keyboard input for iPad
• Added layout direction to Settings (iPad)
• Fixed save/load of named worksheets

### 3.4 — 2019-04-03

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

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## More apps by Ernest Brock

- [allRPNCalc Calculator](https://appshunter.io/ios/app/allrpncalc-calculator/id289555909)
- [BA Finance Pro](https://appshunter.io/ios/app/ba-finance-pro/id379775898)
- [BA Finance Plus](https://appshunter.io/ios/app/ba-finance-plus/id383074322)
- [GraphNCalc83](https://appshunter.io/ios/app/graphncalc83/id744882019)
- [12Calc](https://appshunter.io/ios/app/12calc/id780780002)

All apps by Ernest Brock: https://appshunter.io/developer/289555912

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*