# 10bii+ Financial Calculator — Easy, Fast & Accurate

> Financial calculator emulator with over 120 functions for business and finance. (iPhone/iPad app by Vicinno Soft LLC.)

- Source: https://appshunter.io/ios/app/10bii-plus-financial-calculator/id734187686 (this page in markdown: same URL + `.md`)
- Developer: [Vicinno Soft LLC](https://appshunter.io/developer/338971050)
- Category: Finance, Education
- Price: $5.99
- Rating: 4.10/5 from 39 App Store ratings · 172 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 5 MB
- Languages: American English, Catalan, Czech, Danish, Dutch, Finnish, French (France), German (Germany), Greek, Hebrew and 19 more
- Released: 2013-11-05
- Data updated: 2026-09-13
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/10bii-plus-financial-calculator/id734187686/reviews.md

## What is 10bii+ Financial Calculator?

It is a powerful emulator for HP 10bII Financial Calculator on iPhone, iPad, and Apple Watch, which supports all functions of HP 10bII Financial Calculator and beyond with many intuitive worksheets.

With more than 120 functions for financial analysis, business, statistics, and mathematics, and modeled on the popular HP 10bII Financial Calculator, 10bii Financial Calculator app combines precise mathematics, intuitive display, and ease-of-use in one package. It allows you to easily calculate time value of money, amortization, investment value, mortgage and loan payments, interest rates, and more using powerful and intuitive worksheets.

*** Highlight Features ***

• Time Value of Money TVM

• Amortization

• Cash flow analysis: Net Present Value (NPV), and Internal Rate of Return (IRR)

• Mortgage and Loan payment calculation

• Business percentage calculation like Cost, Price, Margin, and Markup

• Interest Rate Conversion between Nominal and Annual Effective Interest Rates

• Statistical analysis

• 10 Memories for storage. 

• Choice of Chain and Algebraic Calculation Mode

• Scientific capabilities, including log, exponent, power etc. 

• Key click sound feedback 

• N, I/YR, PV, PMT and FV values displayed right above buttons

• Easy data entry in Cash Flow, Stats, TVM calculation with spreadsheet-like worksheets

• One-click access to user manual and customer support within the app

• Easy setting up number format, decimal point, calculation mode (Alg or Chain), and so on via in-app settings

• More ...

**** Support **** 

Feel free to email us at support@vicinno.com whenever you need help.

**** Stay tuned **** 

Like us: www.facebook.com/vicinno
Follow us: www.twitter.com/vicinno

## Key features

- Time Value of Money (TVM)
- Amortization
- Cash flow analysis (NPV, IRR)
- Mortgage and loan payment calculation
- Business percentage calculations
- Interest rate conversion
- Statistical analysis

## Chart rankings

- #115 in Top Paid · Finance (US App Store)

## What do users think of 10bii+ Financial Calculator?

Overall sentiment: negative

**Pros**

- ✅ Accurate financial calculations
- 👍 User-friendly interface
- 🎯 Faithful HP 10bii emulation
- 💰 Affordable compared to physical calculator
- ⚡ Fast calculation speed
- 📊 Displays entered values for verification
- 🎓 Great for finance classes
- 🔧 Responsive developer support (historically)
- 📱 Convenient mobile access
- 🧮 Comprehensive financial functions

**Cons**

- 🐛 iOS 13+ compatibility issues (critical)
- 📵 App crashes on startup
- 🚫 Won't open on newer iPhone models
- 📱 No landscape mode support
- ⚠️ Incorrect calculation results (some cases)
- 🔌 Poor developer support responsiveness
- 🔄 Inconsistent app loading
- ⏱️ Slow startup time
- 🎯 Amortization schedule difficult to access
- 🔧 Abandoned development (2+ years without updates)

**Commonly reported bugs**

- App crashes immediately on iOS 13 and later
- Won't open on iPhone X and newer models
- Sigma button (standard deviation) non-functional
- Incorrect rate calculations (I/YR)
- Amortization calculations cause crashes
- Inconsistent app opening behavior
- Interest rate conversion not working
- CST, PRC, MAR, MU functions non-functional
- K (constant operation) not working
- EFF%, IRR/YR, NPV functions not working
- Shift keys cause app to close
- Number input recognition issues
- Text size display issues affecting bottom row

**Most requested features**

- Landscape mode orientation
- Spreadsheet view for amortization tables
- Visual feedback for key presses
- Display input values during calculations
- Apple Watch compatibility for TVM functions
- Dark mode option

## Recent user reviews (10 of 172)

All indexed reviews: https://appshunter.io/ios/app/10bii-plus-financial-calculator/id734187686/reviews.md

### 3/5 — ダークモードで…

*2026-07-22, version 2.56*

返済一覧がダークモードを標準にしていると読めません。修正をお願いします！

### 3/5 — Landscape Mode Needed

*2026-01-26, version 2.56*

Landscape Mode Needed Please

### 1/5 — Produces incorrect result

*2024-08-14, version 2.56*

Kept giving incorrect answer

### 1/5 — Worthless

*2023-11-29, version 2.56*

This is horrible... does not work when I want to use for conversion.

### 5/5 — Simply excellent rendition of classic

*2022-04-30, version 2.56*

The 10bii is the financial calculator for people to compare financial opportunities and products. This app is an excellent version of my trusty physical 10bii. The calculations are accurate. Great additional features in the worksheets.

### 5/5 — The best 10bii ever

*2022-03-19, version 2.56*

I have been using it for years, it works great. The calculation is fast and the UI is clean and easy to use. The developer listens to you when you have any suggestions. Thanks for great app.

### 1/5 — When trying to calculate standard deviation

*2022-02-05, version 2.56*

Sigma button doesn’t work!

### 1/5 — cpt在哪啊？？？？

*2021-11-28*

找不到这个键

### 1/5 — Incorrect calculations

*2021-01-05, version 2.56*

This calculator produces incorrect results beware! A simple Rate calculation, with PV -1757, N 19, PMT 0, FV 8,254 produced a I/YR of 101.8! The correct answer is 8.7. If you are doing several calculations and rely in this calculator you might be embarrassed when presenting your results so don't trust this app!

### 5/5 — Recent updates

*2020-11-25, version 2.56*

I recall when the app wasn’t working...highly frustrating...but given recent updates, it works perfectly again. This app is obviously a must have for finance folk.

## Frequently asked questions about 10bii+ Financial Calculator

### What does the 10bii+ Financial Calculator app do?

This app is a powerful emulator for the HP 10bII Financial Calculator, offering over 120 functions for financial analysis, business, statistics, and mathematics. It allows users to easily calculate time value of money, amortization, investment value, mortgage and loan payments, interest rates, and more through intuitive worksheets.

### What are the key features of this financial calculator app?

Key features include Time Value of Money (TVM), Amortization, Cash flow analysis (NPV, IRR), Mortgage and Loan payment calculation, Business percentage calculations, Interest Rate Conversion, and Statistical analysis. It also offers 10 memory storage, choice of calculation modes, and scientific capabilities.

### How much does the 10bii+ Financial Calculator app cost?

Based on the provided information, this application is a paid app. There is no mention of free versions, subscriptions, or in-app purchases for additional features.

### What devices is the 10bii+ Financial Calculator app compatible with?

The app is designed to emulate the HP 10bII Financial Calculator on iPhone, iPad, and Apple Watch. This suggests broad compatibility across Apple's mobile and wearable operating systems.

### Who would benefit from using this financial calculator app?

This app is ideal for finance professionals, business analysts, students studying finance or statistics, and anyone who frequently needs to perform complex financial calculations. Its ease of use and comprehensive functions make it a valuable tool for various financial planning and analysis tasks.

## Version history (last 5 releases)

### 2.56 — 2020-11-02

bugfix for the amortization worksheet.

### 2.54 — 2020-07-20

Cash flow worksheet optimization.

### 2.53 — 2020-05-16

Add more functions in Cash Flows worksheet.

### 2.51 — 2020-04-10

UI optimization

### 2.50 — 2020-02-22

bugfix for iOS 13.

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## More apps by Vicinno Soft LLC

- [BA Financial Calculator Pro](https://appshunter.io/ios/app/ba-financial-calculator-pro/id338971047)
- [Vicinno Financial Calculator](https://appshunter.io/ios/app/vicinno-financial-calculator/id400147868)
- [15C Pro Scientific Calculator](https://appshunter.io/ios/app/15c-pro-scientific-calculator/id421102285)
- [11C Scientific Calculator](https://appshunter.io/ios/app/11c-scientific-calculator/id530593018)

All apps by Vicinno Soft LLC: https://appshunter.io/developer/338971050

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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 2026-09-13.*