# CalculatorBiz — user reviews > 12 indexed App Store user reviews of CalculatorBiz by Zysco, rated 3.50/5 from 13 ratings. - Source: https://appshunter.io/ios/app/calculatorbiz/id797810351/reviews - App overview in markdown: https://appshunter.io/ios/app/calculatorbiz/id797810351.md - Rating breakdown: 5★ 7 · 4★ 1 · 3★ 0 · 2★ 2 · 1★ 3 ## Most critical reviews (10 lowest-rated) ### 1/5 — Não funciona *2026-04-29* Péssimo app. Não funciona. ### 1/5 — Boo! *2026-01-05* Since the update the margin and markup calculator does not work. **Developer response:** We re-tested all the calculations and found the issue you are mentioning as well as a few other small ones so thank you for your feedback! The new update shoud have all the problems resoled. ### 1/5 — It is needed to be fixed *2015-01-04* I have faced some problems. There is no MC button. How to clean the memory? If to display the memory value by pressing the MR button and then try to do something with this value, the application will shut down. The same result if to do something like this: 55+MR= ### 2/5 — Broken, again *2025-09-19* This app started off great but last handful of update’s are messy. The screen scaling is off, buttons are arranged in a disorganized manner and the functionality is burdensome. The adage “keep it simple” was drastically overlooked. I hope they roll it back and/or fix these problems. **Developer response:** It looks like this layout issue is happening on older iPhones, we will be fixing this issue shortly and sorry about the inconvenience. Thank you for your feedback! ### 2/5 — Intéressant mais à travailler *2019-03-29* Bonne application mais qui pourrait être travaillée. Crash souvent, ce qui est dommage lorsque l’on paye 5€ pour une app .. ### 2/5 — Nice option with room for improvement *2015-01-11* This is exactly what I need and may I request some features that will make it even more functional for my needs: 1- Can the +-x/ buttons light up when touched so we will know it is pressed. 2- can the activity list move in the reverse direction with the latest at the bottom. 3- can the C button work like apple's calculator that switch between C and AC. 4- can we copy numbers from the activity list and paste into the calculation area. 5- the share button isn't currently working. Thanks!! Decrease one star, this crashes a lot on iphone6 with iOS 8.1.2. **Developer response:** Thank you for your feedback, this helps a lot! See the completely new version we just released! Hope you like it ### 5/5 — Easy for Sales/Exec’s *2026-07-22* All you really need if you don’t need to go as far as a spreadsheet. Cost, Selling, Margin, Markup, Tax & a bit more. ### 5/5 — Problem Solved *2026-05-13* This app was experiencing instability. The developer was responsive and quick to solve the problem. I recommend this app! ### 5/5 — Update *2025-08-25* Excellent! - Thank you **Developer response:** We are so glad you let us know, we just submitted a new version with the correction, here is the full new calculation logic: Selling Price from Cost & Margin: SP = C / (1 − M) Example check: C=100, M=50% → SP=200 Cost from Selling Price & Margin: C = SP × (1 − M) Example check: SP=200, M=50% → C=100 Margin from Cost & Selling Price: M = (SP − C) / SP Example check: SP=200, C=100 → M=0.5 = 50% ### 5/5 — Great business calculator *2014-07-23* I've been looking for a calculator that will quickly give me margin, cost and sell price for day to day work. I use it everyday and highly recommend it. ## Most praised reviews (2 highest-rated) ### 5/5 — Wow *2014-03-28* A great sales tool. Recommended for anyone that travels. ### 5/5 — Just what I needed for my sales calls! *2014-03-13* Great App, it replaces my old calculator I had to carry everywhere and does exactly the same and even more. I really like the history and it is very easy to access. --- *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 2026-08-23.*