10bii Financial Calculator by In A Day Development is a feature-rich HP 10bII-inspired finance calculator offering 105+ functions for time value of money, cash flows, and statistics. It holds strong rankings in finance categories (Canada #1, United States #2, Austria #6) and a solid 4.42 rating from 760 reviews. With 50,000+ total installs and 280 in the last 30 days, the app shows enduring demand from a mature market.
Pros & Cons
105+ finance-oriented functions for professional use
Easy mode and tutorials to lower the learning curve
Support for uneven cash flows with a spreadsheet-like workflow
Paid app vs some competitors that offer free options
Some competitors emphasize broader modes or HP branding beyond HP 10bII compatibility
Non-finance features are limited compared to multipurpose calculators
About 10bii Financial Calculator
10bii Financial Calculator is a finance app developed by In A Day Development.
Download Statistics
10bii Financial Calculator has been downloaded 76 thousand times. In the last 30 days, the app was downloaded 280 times.
User Ratings
10bii Financial Calculator is rated 4.42 out of 5 stars. The rating is based on 760 ratings.
App Information
10bii Financial Calculator costs $5.99 to download. The APK download size is 10.12 MB. The latest version available is 4.16. The last update was on April 24, 2026.
Technical Requirements
10bii Financial Calculator requires Android 4.4+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since November 2010.
Description
In-App Upgrade: 10bii+ Features (Bonds, Breakeven, Depreciation, Trig, Probabilities) available!
Get a detailed PDF report for 10bii Financial Calculator with download trends, rating history,
and key performance statistics — useful for competitive research or tracking your own app.
Learn more
Are you the developer of this app? Join us for free to see more information about your app and learn how we can help you promote and earn money with your app.
Comments on 10bii Financial Calculator for Android
★★★★★Nick D8653· Dec 14, 2021
This is a great financial app - there has been an issue with Google play the past couple of days that have been resolved - don't let this discourage you from using this app - I have been using this for years and once you get used to using it you won't be able to live without it - also, Kenny was a great help and very responsive during the issues with Google play
★★★★★D M· Mar 24, 2021
Same day response if you have trouble! This is the best financial calculator app ever! Buy the + version. You won't regret it. Thank you team! Maybe add different themes? Not a 'need' but people will definitely appreciate it. - Financial Advisor
★★★★★Daniel Buckett· Jun 20, 2021
Really helped me understand my real hp10bii+ i would recommend the 10bii plus app if you have a real one.
★☆☆☆☆Indira Dejarnette· Jun 9, 2021
WT Heck Bought it struggled w Google play till 330am won't download just says refund or install. With each time I click install it wants to rebill. Account checked paid now no app and needed for all day RARE opportunity training told by 2 experts retiring soon to get. There's a free calculator they said could be alt this morning SMH. This could be a hit for hundreds of thousands when people have bad results everyone switches.
★☆☆☆☆Lloyd Samsonite· Jan 5, 2022
Google deleteted my reviews yet again for no reason, and now I have ro purchase this again if I want to download and use? (thank google for fewer stars) lost another star because NO CUSTOMER SERVICE
★★☆☆☆Johnson Thomas· Feb 25, 2024
How do you calculate PB & DPB... Payback period & discounted payback period...when the cash flows are uneven ?.. I only see this option available for NPV & IRR....but how about PB & DPB ?
Google Play Rankings for 10bii Financial Calculator
This app is not ranked
Technologies used by 10bii Financial Calculator
8 permissions·34 libraries
Subscribe to see full permission and library details
Trust & Safety: Permissions include INTERNET and ACCESS_NETWORK_STATE for online features, READ/WRITE_EXTERNAL_STORAGE for saving data, VIBRATE, and market licensing with CHECK_LICENSE. The app also requests a DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION. This set aligns with a paid finance calculator app that relies on licensing checks and standard online functionality; no highly sensitive permissions beyond typical finance app needs are listed.
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.