Calculator HD Pro 4+

Basic & Scientific Calc

Cider Software LLC

Designed for iPad

    • 4.8 • 10.4K Ratings
    • $9.99
    • Offers In-App Purchases



A colorful calculator with BIG buttons, LOTS of features, and fully customizable.

・Dual-line display - shows the input and result at the same time
・History tape - saves every calculation, time and date stamped
・Memory buttons - shows its value on the display
・Percentage and backspace button
・Scientific functions
・6 layouts (3 portrait, 3 landscape)
・10 color themes
・Multi-line input for really long equations
・Automatic scientific formatting
・Label any calculation in the history tape
・E-mail a calculation or the entire history tape
・VoiceOver accessibility
・iOS 9 Split View
・3D Touch
・Today Widget (In App Purchase)
・Multiple History Tapes (In App Purchase)


・Swipe down to see the history tape
・Tap & hold on the result to copy
・Tap & hold on the input to move the cursor, copy, paste


・Font Size
・Bold Font
・Color Theme
・Light Tape Background
・Show Layout Button
・Allowable Layouts
・Show Memory Buttons
・Backspace Button (Solid, Arrow)
・Replace ÷ Button With /
・Replace E Button With Hidden, EE, 00, or 000
・Show Thousands Separators
・Minimum Decimal Digits
・Maximum Decimal Digits
・Equals Repeat
・Left-Handed Mode

URL Scheme: calculatorhdpro://

What’s New

Version 4.11.4

- Miscellaneous improvements.

Ratings and Reviews

4.8 out of 5
10.4K Ratings

10.4K Ratings

Magatron128 ,

Best Calc App

I am a bartender, I have been using this app for like 5 years. The function to be able to view past entries that are time stamped & dated, and also delete entries if needed is vital to my job at the end of the night. I originally downloaded this app bc on the original iPhone Calc app it doesn’t list off each number as you enter it meaning if I was entering in tips and got interrupted by a customer I would have no way to be sure what the last tip I entered was & risk entering it in twice causing the drawer to be short or not entering it in at all and losing money. This one lists every number you enter at the top & has saved me so many headaches & a lot of time over the years. This app is great :)

Dale in TX ,

Do not purchase they take what you paid for and make it worse to get you to pay more money

I originally bought this as a paid app! This developer has turned into a predatory money robbing group that takes away your ability to clear history and now locks you out of the history section unless you pay them more money for a ability to have multiple history pages which I don’t need! Once you buy something from someone the developer should not have the ability to make it worse just to go to you for more money! Now instead of clearing history I’ll line items at one time I am locked out of the ability to do that and have to manually clear each line item one at a time making it worse for the customer! so this developer is trying to go just for more money by making something worse than taking away what we paid for and then expected us to be happy and give her more money! this used to be one of the better calculator apps! but now they’re choosing to just screw their customers over to make more money by taking away what they paid for to make them pay to have a user-friendly app!

Halmeowni ,


I can’t do without it, have it on both iPads & iPhone. The reason I love it is that it is so easy to use. I’m not great with arithmetic so I need to use a calculator for all adding etc. And since most of the buttons on any calculator no sense at all to me, I love that this one has 3 layouts to choose from, including the simple one with big buttons that are easy to see. It does offer a sophisticated sciencey layout for those who want it. I can keep the “adding tape” in a list for later reference. This is truly a must have calculator for other elders who have vision troubles and/or lack mathematical sophistication as I do, yet an accountant or scientific sort would have their needs met too.

In-App Purchases

Today Widget
Multiple History Tapes
Multiple History Tapes
Organize Your Calculations

App Privacy

The developer, Cider Software LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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