- Price$2.99
- CategoryUtilities
- First releasedOctober 13, 2012
- Versions3 archived
- Installable2 of 3
- AvailabilityStill on the App Store
- SellerCider Software LLC
- Bundle IDcom.cidersoftware.Calculator
RequirementsCompatible with iPhone, iPod touch, and iPad. Requires iOS 7.0 or later.
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Report an issueA colorful calculator with big buttons, comprehensive features, and extensive customization. Used by millions. Completely ad-free.
SEE EVERY STEP ・Dual-line display - shows your input and result simultaneously ・Multi-line input for long equations ・Tap & hold to move the cursor or copy and paste where you want
SAVE YOUR WORK ・History saves every calculation with time and date ・Label important calculations for easy reference ・Email single calculations or complete history ・Swipe down to review previous work
CUSTOMIZE EVERYTHING ・6 layouts including extra-large button options ・10 color themes plus Dark Mode ・Adjustable font size and bold text ・Left-handed mode ・Show or hide features you don't need
SCIENTIFIC FUNCTIONS ・Full scientific calculator when needed ・Memory buttons with values displayed ・Percentage and backspace buttons ・Automatic scientific notation ・VoiceOver accessibility
OPTIONAL IN APP PURCHASES ・Today View Widget (iOS 17 and below) ・Multiple History Tapes
ADDITIONAL FEATURES ・Customizable button symbols and decimal settings ・Multiple backspace button styles ・iPad Split View and 3D Touch support ・Gesture controls for quick access
URL Scheme: calculatorhdpro://
Chart History
Ratings Over Time
| Date | Version | Rating | Ratings | Price |
|---|---|---|---|---|
| May 27, 2013 | — | — | 299 | $2.99 |
| December 15, 2018 | — | ★ 4.8 | 4,818 | $2.99 |
From archived App Store listing data, captured by the Wayback Machine.
Archived Reviews
8 of 15Update 2025: 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! Update 10-1-2018: still my fav Calc! Update: 6/13/2019: & Still! :-) Update: Sept 2021. Still like it.
Excellent App—simple and effective. No Fills just Functional—Nice Appearance
The notifications for reviews is crazy i already gave it 5 stars. If it could calculate distances it would be great
Calculator HD PRO is a user friendly calculator with an attractive display .
Most user friendly and accurate calculator with the best basic and scientific calculation.
Awesome app have used for years. Go pro version
i just love messing with this for fun even when i have a calculator in real life and have the app apple gave me :D
I’m happy to have it on my home phone screen.
Period reviews recovered from Apple's customer-review feeds via the Wayback Machine.