5/5 rating based on 255 reviews. Read all reviews for Calculator HD Pro for iPhone.
Calculator HD Pro is paid iOS app published by Cider Software LLC
Austin Taytious
but it does what I need it to do. Wish it had a running tally like an old school desktop style. Maybe it has the equivalent of one but I just don't see it. Still, I use it a lot.
Tremolux66
Update to my 2015 review: Still giving it 5 stars because there are so many good features and the annoyances are relatively minor. I keep this app on my phone's home screen so I can get to it easily. Niggles: I find the real-time calculations distracting and haven't seen a way to turn that off; I prefer to wait until I'm done to see final results. When compared to (physical) calculators I've used over the years (I'm old enough to remember when a 4-function handheld was a big deal), I stumble over the square-root and some other operation keys. Old-school algebraic calculators had you enter the argument first, then press the operation key but this app requires you to press (e.g.) square root first. Habits of 40+ years are tough to break, and IMO this algebraic implementation is a little too strict, esp. when working on-the-fly – with little or nothing written out beforehand. An option (or separate mode) to alter this behavior would be great. Really minor: Old-school calculators labeled the E key as EE (Enter Exponent), and I often fail to recognize the key when I need it; an E/EE label option would be nice. From my previous review: Really like the parentheses in the basic mode – a small detail but very useful. Also like that it can support the scientific mode with the portrait display – saves me from having to unlock rotation to go to landscape, which I really hate about the built-in calculator app. (Remainder of previous review deleted.)
Jebandpooky
8/12/2018 - The calculator widget is great. One more reason this app WILL ALWAYS stay on my iPhone. The only calculator I use. 8/7/2018 - The updates, ease of use, and support are only a few reasons I still have it on my iPhone. Well worth the upgrade to the pro edition. 10/14/2017 - Still the ONLY calculator and converter I use. I use this A LOT when grocery shopping. I love the % button. 3/9/17 - Great job guys. Some of the best money I've ever spent in the App Store. One feature I'd like to see added is a "floating calculator" feature - it minimizes with a touch and stays on any screen. 2/3/2017 - This calculator app and their converter app should be standard on all iPhones and iPads PERIOD. I don't need any other calculator and converter. This is the best calculator I have used on my IPhone 7 Plus and IPad Pro 12.9
Slarvey
Perfect for all I do; however it does freeze from time to time which is annoying!
Garsisgolfing
Provides me with all the functionality I need personally and professionally.
Rigobenito
My best calculator. Now better than ever. I'd wish a tax calculator included. Then I will not need any other one. I’m glad you’re updating it regularly, it tells about your concern to provide an excellent app. I keep missing the tax button, which is something I use every day.
KM101x
Paid to have ads removed, but have to go to App Store and click on the app to remove ads EVERY time I use the calculator :(
LabRat58
Having E at lower left corner is highly UNintuitive. I would prefer L>R there of 0, decimal, E. As is, it often causes me to make an error.
Mac Medix
This is such a vastly superior calculator. Lots of small but great features that make it so. I love that you can easily turn sideways to quickly see the "tape" results of previous calculations. See description for more. Still my fav Calc!