# 10BII Calc HD — user reviews > 740 indexed App Store user reviews of 10BII Calc HD by Ernest Brock, rated 4.90/5 from 3,729 ratings. - Source: https://appshunter.io/ios/app/10bii-calc-hd/id382452060/reviews - App overview in markdown: https://appshunter.io/ios/app/10bii-calc-hd/id382452060.md - Rating breakdown: 5★ 3,526 · 4★ 151 · 3★ 28 · 2★ 8 · 1★ 16 ## 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 ## Newest reviews (19 of 740) ### 5/5 — Teacher recommended *2026-07-09, version 3.8* Awesome calculator, our instructor recommended this app and it worked flawlessly. Good to have when your lenders cool app won’t load, function, or whatever else goes wrong in front of your client. Thanks. ### 5/5 — Outstanding tool for financial calculations *2026-07-06, version 3.8* I facilitate financial courses for a professional association. This is the calculator I recommend for all my attendees despite other options including variants of the HP10BII emulator ### 5/5 — Best calculator ever *2026-06-29, version 3.8* I am very happy with this calculator, I am a Vacation Owner representative and I have used it for many years !!! ### 5/5 — Useful app/calculator *2026-06-29, version 3.8* I have a Hewlett-Packard 10BII. This app duplicates the features of that to a T. Perhaps better. Thank you. ### 5/5 — Great Financial Tool *2026-06-28, version 3.8* I use this calculator regularly in my financial services business. Easy to use and always up to date. ### 5/5 — Financial tool *2026-06-25, version 3.8* One of my most used apps- great tool! ### 5/5 — Business *2026-06-23, version 3.8* Best business calculator and everyday use ### 5/5 — Awesome product *2026-06-23, version 3.8* I’ve been using this calculator for over a decade. It stays updated and is extremely useful and powerful. I primarily use the financial calculator functions. It is quick and easy, and it’s always at my fingertips. I haven’t put batteries in my old HP stand alone calculator in so long that I don’t even know where it is anymore. It really is a great product, both on my phone and my iPad. ### 5/5 — Perfect for CFP exam *2026-06-21, version 3.8* I bought this app almost 10 years ago to help me study for the CFP exam. While you cannot bring your phone into the actual exam I found this app to be very helpful when studying. It is a great display, very easy to look at. I found this app far easier to use than my HP 10 Bii + financial calculator. I use it everyday. ### 5/5 — Awesome App *2026-06-18, version 3.8* I have been a finance broker and now help people to buy investment properties which has meant that I have found this app to be super useful. Thank you Ernie. David 👍🏻 ### 5/5 — Great calculator APP for Financial People *2026-06-15, version 3.8* This is the APP that keeps getting better. Developer is regularly working hard to make this product better. I’m a long-time user. I’ve bought it 3x (once on my work computer, once on my home computer and on my phone). Works great! ### 5/5 — Great App *2026-06-10, version 3.8* This is a very good solution that I use on a daily base. Thank you! ### 5/5 — Great app! *2026-06-03, version 3.6* I use it daily. Very easy to use. Thank you! ### 5/5 — Fantastic- Best calc app *2026-06-03, version 3.8* The new update (2023) works well and has some good features. Tried a number of others before I found his one. I've now used this app for many years and never had an issue. It works fantastically, does what you need, no bugs, no issues. Undoubtedly the best financial app ### 5/5 — Business at its best *2026-05-22, version 3.8* Used this calculator since 1992, when I actually bought the device. I love its simplicity and accuracy in business. Some things should always be there and this one just gets better and better. ### 5/5 — Da Review *2026-05-14, 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 — My Go-to FC *2026-05-14, version 3.8* Absolutely faultless. ### 5/5 — Great App - Easy to Use *2026-05-07, version 3.8* Most app used on my phone! ### 4/5 — Review *2026-05-07, version 3.8* Excellent product. ## Most critical reviews (10 lowest-rated) ### 1/5 — Do not purchase *2025-12-12, version 3.8* Simply, this app doesn't work. I did the simplest of calculations, 1000 PV, 10%, 1 year. Should be 1100. Nope. If I follow their directions to change the default 12 number of payments per year(P/yr) to 1, it defaults back to 12. I even took a screenshot of one of their examples, to make sure I wasn't missing something. Nope. Doesn't work. ### 1/5 — Deserves ZERO STAR *2024-02-29, version 3.5* If anyone out there to try the app, forget about getting a refund. I have mistakenly bought multiple calculator and for my school i only needed the one from TA. I have asked for return/refund on this, the same day of installation, i got a straight NO, even when the other purchase was made through same seller/developer, can you even imagine? This was my worst purchase ever, i will not recommend this, as you will not get any support after you buy it. Thats it, money gone to drain! ### 1/5 — Calculator usage *2021-05-26, version 3.4* Useless calculator!!! Generating wrong answers, compares it to a physical calculator. Complete waste of money!!! ### 1/5 — Doesn’t work with iOS 11 *2017-10-12, version 3.2* Update the app!!! ### 2/5 — Disappointed *2025-10-20, version 3.7* Doesn’t retain my stored values in the registers once the app is closed on my IPhone Pro. ### 2/5 — Sc,v *2025-05-13, version 3.6* Gaze zI ### 2/5 — Having some issues *2020-04-25, version 3.4* I’m doing a mortgage course and some of the calculations doesn’t match with the tutor, pressing exact same buttons(entering exact information) but different results How can I fix this or return it? ### 3/5 — 為什麼按鍵都有聲音 *2021-02-09, version 3.4* 有沒有可以協助的方式 您好無法關閉 按了setting 沒有選項可以選 ### 3/5 — Muy buena la aplicación *2012-07-25, version 1.4* pero muy inestable ### 4/5 — Heavy rotation *2026-07-05, version 3.8* Always on point with everything. My go to calc ## Most praised reviews (10 highest-rated) ### 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. --- *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.*