The 10bII+ is a complete reimplementation of the full functionality of the popular HP 10bII+ financial calculator. In addition to providing 10bII+'s look & feel and functionality, we have modernized the app with features such as recipes, interactive prompts, and register views. This free version provides basic calculator functions, Math, Trigonometry, Memory, Interest Conversion, and Date functions. A one-time In-App-Purchase is required to access the Time-Value-of-Money (TVM), Amortization, Cash Flow, Bond, Depreciation, Statistics, Profit Margin, and Breakeven worksheets. The 10bII+ modern addresses two critical issues for the user: (i) knowing what is stored in each of the calculator's internal registers, (ii) remembering the exact key sequences for getting specific calculations done. The register views, accessible in the main screen, provides visibility into various register groups. You can switch between different groups of registers (such as Financial, Cash Flow, Bond, etc.), and inspect stored values. The recipes which you can record and store remove the burden of remembering the exact keystroke sequence for your tasks. You simply select a pre-recorded recipe (builtin or your own) and run. When running a recipe, the app visually prompts you with the keystrokes to press and guides you along in getting the results. The app comes with 25 built-in recipes and allows you to add/record/edit/delete your own recipes. The convenient register view on the screen allows you to view register contents as your operations proceed.
Not free
Requires in app purchases for basic functions
-100 stars
Puts the main features of a financial calculator behind a paywall. Might as well download a scientific calculator at this point
Inaccurate
Waste or money, NPV an internal rate of return formulas are inaccurate, time value of money also completely useless and innacurate
Error message regularly
Continues to throw an error message just about every time you use it. Sometimes it freezes the phone. Very glitchy, but I wish it would work properly because it’s a great concept and easier than carrying the physical calculator.
Errors
IRR error when using the CFj key and I putting 0 for multiple cash flow. My hp10bii+ does not give me this error using the same keystrokes. Also, this app freezes my iPhone entirely to the point that I have to do a hard reset. Typically happens one per day.
Kinda works but constantly crashes
Don’t bother
Minor fixes.
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