# 10bii Financial Calculator — user reviews > 124 indexed App Store user reviews of 10bii Financial Calculator by K2 Cashflow, Inc., rated 4.70/5 from 662 ratings. - Source: https://appshunter.io/ios/app/10bii-financial-calculator/id360256797/reviews - App overview in markdown: https://appshunter.io/ios/app/10bii-financial-calculator/id360256797.md - Rating breakdown: 5★ 576 · 4★ 48 · 3★ 7 · 2★ 9 · 1★ 22 ## What do users think of 10bii Financial Calculator? Overall sentiment: positive **Pros** - 🚀 Powerful financial calculations - 👍 Intuitive interface - 🚀 Convenient mobile access - 👍 Helpful tutorials and instructions - 🚀 Accurate results - 👍 Amortization feature - 👍 Versatile for various use cases **Cons** - 🐛 Occasional crashes or bugs - 👎 Unintuitive UI for some users - 👎 Inaccurate date calculations - 👎 Confusing settings and options - 👎 Lack of user manual or support **Commonly reported bugs** - Incorrect amortization calculations - Crashes when using certain functions - Decimal point issues in display **Most requested features** - Add compound interest per year option - Improve amortization schedule display - Integrate with calendar for date calculations - Provide better user documentation and support ## Newest reviews (10 of 124) ### 3/5 — REAL ESTATE TRADING LICENSE COURSE *2023-12-10, version 4.9.10* I loved this app until I got to chapter 14 and can’t do the calculations I need .. really bummed out .. I can’t calculate the amount of interest or principal paid during a term it will only show the total during a term .. it pulls up a data sheet with the info for each payment but can’t see the totals . Maybe I’m missing something .. on the real calculator you hit the ( term amount ) input and the AMORT key and the = symbol and it would pull up the amount of principal paid during that term .. had to order the handheld calculator aster all 😔 ### 5/5 — it works *2023-04-25, version 4.9.10* that’s all there is to it ### 5/5 — Real imitation of a handheld calculator *2023-02-15, version 4.9.10* Real good, much better function than handheld. ### 5/5 — Doctor Leon *2023-01-07, version 4.9.10* This app works great, far better than HPll ### 4/5 — Where do the calendar function go? *2023-01-04* I used to use the calendar function, difference in days, etc. every week to write contracts and track expiration dates in them. Need it back. Other than that I’d give it 5 stars. I love the app and use it as my primary financial calculator. ### 1/5 — Does not seem to be calculating correctly *2022-07-05, version 4.9.10* It looks easy to use and straight forward which i like. But I am following along to a video lesson and the instructors calculations are mostly very different from the ones provided with this calculator, even when i follow the exact key strokes. ### 5/5 — My Daily Driver for Real Estate! *2022-02-07, version 4.9.10* It does everything. As always, robust apps have a steeper learning curve but this has excellent video/written tutorials. ### 5/5 — Exceptional Calculator *2021-12-14, version 4.9.10* One of my top two go-to calculators between this and the 12C. It offers a beautiful interface and amazing functions. Highly recommend. ### 5/5 — Very convenient *2021-11-07* Works well for my Principles of Financial Management class and so convenient to have it on my phone! So far it’s been accurate. Thanks for creating this app! ### 1/5 — 计算出的答案是错的 *2021-09-24* 无语了给人整的 别祸害人了 ## Most critical reviews (10 lowest-rated) ### 1/5 — Mauvais *2026-02-12, version 4.12* Trop dur wallah ### 1/5 — Atrocious UI *2025-03-27, version 4.10* This is standard math, the expectation form an $7 app is to make its easy for a lay person to use and not have to use youtube videos to learn how to get an amortization schedule. I could have done that with Excel PMT. I wanted a lazy solution but this isn’t it, i wish i had not spent the money ### 1/5 — Not the same as 10II *2025-03-19* I wanted to hit the same keystrokes on this calculator as I do on my real calculator. That doesn’t work. It keeps open up dialog boxes that have more questions than the single input I was looking to put in. I am sure if I spent time I can figure this out, but I really just mindlessly wanted to hit the same keystrokes because my calculator was not close by. I can’t believe I paid for this when I thought it was going to be the same. How do I get my money back ### 1/5 — Baloney ahh app *2025-02-07, version 4.10* The free financial calculator in the App Store is so much better and if you’re in college, it will be the exact same as the calculator your professor will use. Don’t waste your precious money on this app unless you are an experienced finance calculator expert. Just get the free one lil bro ✌️ ### 1/5 — 3.99 Add on feature doesn’t work and family sharing also don’t work *2024-05-19* Please update this app to make sure add on and family sharing along with add on purchase works. Because as of right now nothing is working properly. When restore it always restore to one of the add on and not to the 3.99. ### 1/5 — Impossible To Use *2024-05-16, version 4.9.10* This calculator must be the least intuitive one in the App Store. I tried both the video instructions and the text instructions, which probably only made sense to the app’s developer. The text instructions could not be viewed while using the app, so I took a screenshot. The steps still made no sense and the result was…zero. No calculation had occurred. I wish I could get my money back, if nothing else to squash the nibbling thought that I’d been scammed. ### 1/5 — Crashes everytime- never got a single answer *2024-04-04, version 4.9.10* I downloaded this and one the very first attempt to calculate it crashed. It crashes everytime and has never worked ### 1/5 — Do not recommend *2023-09-18, version 4.9.10* CPT and quit are not on this one at all. ### 1/5 — False Advertising *2022-12-01, version 4.9.10* This app uses micro transactions and is absolute garbage. No help and no contact information for assistance. Had to get this for work and it’s more stressful than doing the calculations by hand. I’d rate negative stars if I could. ### 1/5 — 骗人的app *2022-10-10* 下载下来，还没点开，就直接扣款，没有任何提示 ## Most praised reviews (10 highest-rated) ### 5/5 — Best Financial calculator *2025-12-25, version 4.12* Great app that is easy to use and worth its cost. Never had issues with it & helps with investing. ### 5/5 — The power of knowledge *2025-06-09* This calculator is an awesome tool for prospecting. I’ve used the 10b for 35 years. As a mortgage professional, I have been asked thousands of math questions. What’s my payment ? What interest rate am I paying now? If I shorten my term how much can I borrow? Amortization schedules, or simply cost per thousand dollars borrowed. It allows me to text the amortization information to my perspective clients, thus giving me their cell number and building my reputation! ### 5/5 — Perfect for HP 10b fans *2025-03-30* I still have my old HP 10b from college, and it's awesome. I need one to take with me all the time, so I bought this. I was hesitant, since the reviews for the actual HP 10bii+ are mostly negative. Turns out this app is great. I highly recommend it. ### 5/5 — Small new bug *2025-01-21, version 4.10* Love this app and use it every day! A new bug came in on the last update though on something small - when you try to add a percentage to a number it only adds the percentage number, not the percentage amount. Example 100+12% is 112, but the result shown is 100.12 ### 5/5 — Excellent and effective *2024-12-27* For my work, I have a financial calculator in the mobile program I use which is great at illustrating how much growth occurs over a period of time at higher rates of return, but this one is my go to app when speaking with business owners and initial meetings with prospective clients to illustrate the impact of inflation and simple savings and investing strategies. Simple and effective. Thank you. ### 5/5 — Excellent! Second to none! *2024-10-28* I’ve used this app for quite a while, and I found it to be full of features that you would expect, as well as features you would not expect, such as full amortization tables. This app is very well done. ### 5/5 — My Favorite *2024-10-05, version 4.9.10* My favorite go to calculator I own the real Calculator but this makes it so much more easier. I appreciate this app. ### 5/5 — Best app ever for calculating everything *2024-07-04* This app is phenomenal!! It takes so much strain out of working with numbers in so many different ways. ### 5/5 — Shut up and just buy this financial calculator already *2024-01-29* Don’t waste time on all the others, this is the one. I’ve spent over 30 years working the HP 10 and this is even better and leaves all the other app versions in the dust. ### 5/5 — Great app *2023-05-02, version 4.9.10* If you're in real estate this is a must have app. I also love the easy modes which are easy to use wizards. --- *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.*