# Calculator HD: Big Buttons — user reviews > 213 indexed App Store user reviews of Calculator HD by Studio Zebra, rated 4.50/5 from 1,687 ratings. - Source: https://appshunter.io/ios/app/calculator-hd-big-buttons/id1082193416/reviews - App overview in markdown: https://appshunter.io/ios/app/calculator-hd-big-buttons/id1082193416.md - Rating breakdown: 5★ 1,277 · 4★ 204 · 3★ 53 · 2★ 51 · 1★ 102 ## What do users think of Calculator HD? Overall sentiment: positive **Pros** - 👍 Easy to use - 👍 Large, clear numbers - 👍 Simple and straightforward - 👍 Great for basic calculations - 👍 Convenient on iPad - 👍 User-friendly **Cons** - 🐛 Decimal point issues - 🐛 Inaccurate percentage calculations - 💡 Lack of history/memory - 💡 No backspace/undo function - 🔍 Ads can be distracting **Commonly reported bugs** - Decimal point not working properly - Incorrect percentage calculations **Most requested features** - Add backspace/undo function - Improve decimal point and percentage calculations - Provide option to remove ads ## Newest reviews (18 of 213) ### 4/5 — Free calculator app *2026-06-30, version 1.2* Useful calculator app, could be more user friendly if you can look up the previous numbers entered ### 5/5 — Great App *2026-03-24, version 1.2* This calculator is the perfect replacement for my old battery powered extra large key calculator! ### 4/5 — Love a free Calculator App for iPad *2026-03-23, version 1.2* Just installed this app as my previous app decided to start charging. ### 5/5 — Superb! *2026-03-17, version 1.2* I looked everywhere for the perfect, free, and ad free calculator app and this is IT! It is perfecto for really anything! I love it! ### 5/5 — Very useful app *2026-02-08, version 1.2* This app cares for all my calculations needs. Easy to use and very fast, easy to read and free. No hard choices here. Thanks! ### 4/5 — Simple and quick! *2026-01-09, version 1.2* For my use and for easy reading large numbers I would like to see the commas to divide the thousands in the answer. ### 5/5 — Free app for iPad *2025-11-10, version 1.2* As far as I know Apple didn’t bother to include a calculator on iPads so this one has been great! No issues at all. ### 4/5 — I like it *2025-10-06, version 1.2* It’s cool ### 5/5 — Perfect! *2025-10-02, version 1.2* love it! cant stop using it very dependable! did not regret to download it. Keep it up!! ### 5/5 — Simple and effective *2025-09-25, version 1.2* I wanted a calculator that adapted to landscape mode since that is what mode I use mostly. This fits the bill! And it’s very easy to use! ### 4/5 — Easy to use Handy calculator *2025-08-24, version 1.2* At 77 I rarely need a calculator, but on those times when I do, it’s nice to reach for this app with the easy to read keys and do the job needed. No bells no whistles (that I am aware of) just simple maths calculations. I wish everything else was so simple and effective. ### 3/5 — Duh *2025-08-05, version 1.2* Ordinary ### 2/5 — Ads are super annoying *2025-08-02, version 1.2* I use the calculator on my phone all the time. The phone was in the other room charging so I used the app on the iPad. The flashing of ads was so distracting, I found it hard to do my work. Not sure why there isn’t a native calculator for the iPad without ads. ### 2/5 — Percentages *2025-07-25, version 1.2* This app doesn’t figure percentages off of an item correctly. 20% off of $10 is stated as .2 not $2.00 ### 5/5 — Amazing App *2025-07-14, version 1.2* AMAZING APP FOR OLD IPAD2! ### 3/5 — Calculator *2025-06-21, version 1.2* Pretty good, but I think you can add some other stuff ### 5/5 — Calculator *2025-05-27, version 1.2* I love this calculator. It makes me happy. ### 5/5 — Ads? Never noticed! Love it! *2025-04-23, version 1.2* I use a lot. Never noticed ads. Definetly not a problem. Best app ever! ## Most critical reviews (10 lowest-rated) ### 1/5 — Change *2026-08-25, version 1.4* Not enjoying the new format ….preferred the old. Go figure! ### 1/5 — What was wrong with the old free calculator ? *2025-12-27, version 1.2* Can you get an ABACUS app? It might be better than the free iPad calculator app ### 1/5 — No, No, No *2025-01-06, version 1.2* Crashes constantly. Amateurish programming. The app is garbage. ### 1/5 — Yuk! *2024-12-09, version 1.2* Still expected to give them free data to sell…as for design and ease of use…remember its a basic calculator…not a scientific masterpiece for NASA. Used for 3 minutes…then binned it! ### 1/5 — Minor League *2024-12-04, version 1.2* I installed this calculator app a short while ago. There is no backspace, regardless of whether the iPad is in vertical or horizontal mode. The decimal button does not work. I will delete this substandard app as soon as I finish and post this review. ### 1/5 — A calculadora faz as contas erradas impossibilitando o uso *2024-10-09* Como ela calcula errado os resultados não são confiáveis desinstalando aqui ### 1/5 — Taking a turn for the worse *2024-09-15, version 1.2* I’ve had this for years and due to recent changes (ads, promos for enhancements at the beginning ) it is no longer quick. I now dread what kind of silly delay is going to greet me when I want to do a quick calculation. It’s faster to open Numbers or Excel now. ### 1/5 — Worthless with junk ads *2024-09-11, version 1.2* Shouldn’t need to tolerate annoying ads on a basic which should have been included on the basic utilities if iPad. This app is worthless due to the ads and risk to privacy. ### 1/5 — Does not do decimal math properly. *2023-12-10, version 1.2* Very frustrating as this calculator does not do decimal math properly. You need to type a zero (0) before the decimal for it to calculate properly. Every other calculator on the planet allows you to use just a decimal. Do not recommend. ### 1/5 — Confusing *2023-11-22, version 1.2* Went to use this app to subtract about a dozen check book balances and couldn’t get accurate numbers for simple subtraction? I ended up using the calculator on my phone? This was a major dissapointment! ## Most praised reviews (10 highest-rated) ### 5/5 — Happy with new calculator format *2026-08-17, version 1.3* Really like how this newer version works! ### 5/5 — Does What It's Expected to Do *2026-08-07, version 1.2* I've used several calculator apps and this one has been quite useful and simple to use, like a calculator app should be. ### 5/5 — A+ *2026-06-20, version 1.2* LfjfheisdhcxnsuidZAjd ### 5/5 — Easy as ever *2026-06-15, version 1.2* Fast and accurate! Very easy to use👌👌👌👌 ### 5/5 — How good it is *2026-05-25, version 1.2* I didn’t have a calculator app before and it was free and it helped me out a lot! My brother asked hard questions and he also said I have to use a calculator app to do the answer, and I didn’t have the calculator app to do it so it was a challenge and this app looks amazing for a calculator! That’s why I wanted it! ### 5/5 — Great Basic Calculator *2026-04-23, version 1.2* This is a great basic calculator for those who don’t need calculus features! Deleted the others who wanted to charge you for ‘simple’ math and other functions the typical person would ever use! ### 5/5 — Thanks again it works great does a great job. My iPod didn’t have one *2026-04-20, version 1.2* Have one on it thanks again. Calvin Charlie ### 5/5 — USER FRIENDLY *2026-04-18, version 1.2* Great for basic calculations…fast and easy! ### 5/5 — Owner John *2026-04-16, version 1.2* Just bought it to have a simple calculator handy, and it does just great. ### 5/5 — Easy to use *2026-03-28, version 1.2* App is very easy to use, large type, just a simple calculator which is all I really wanted. Thanks --- *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 2026-09-10.*