iPad Screenshots


HiCalc - Calculator for iPad will make all your calculations become simpler than ever.

► Scientific calculator: sin, cos, tan, deg/rad/grad, Pi, sin-1, cos-1, tan-1, sinh, cosh, tanh, log, ln, sinh-1, cosh-1, tanh-1, Dec->Deg, Deg->Dec, XY->R, Random, nPr, nCr, Differential function, Evaluation function,...

► Necessary functions for your popular daily calculation:
• Currency Converter
• Unit Converter
• Date - Time
• Finance

► Engineering & Finalcial Calculator:
• Graph
• Statistics
• Equation Solver
• Finance
• Base Conversion

► Noteworthy
• RETINA ready!
• New! Biorhythm calculator 
• Support three calculating modes: STANDARD, STRING and RPN
• Support precision to 31 digits
• Supports Complex numbers in STRING mode
• Powerful scientific calc with advanced fx: Differential, Evaluation, Integration, Product, Root-Finder…
• Support Extended Memory for deep calculation
• Expression history up to 135 items
• Sending data from Ext-Memory & History list
• Copy & Paste support
• Intuitive interface & No ADs

► Features:

• Multi-line LED-Calculator
• Smart input which allows input of complicated expressions
• Show expression as normal writing mode @ very useful for students
• Supports both USA and EUROPEAN styles for date and numeric separator
• Advanced RPN mode with Stack viewer and functions: DROP, SWAP, ROLL, DEPTH, PICK, OVER, KEEP, LAST, CLEAR

► Tip calculator
Easy & funny to use.

► Biorhythm calculator
How are you today? How is your health factor this week, next month, next year? Biorhythm calculator will show you health factors as : physical, intellectual, intuitional and also emotional factor.

► Constants Library
The Constants Library includes 1500 constants from Mathematics, Physics, Solar System and Element e.g: Avogadro number, Faraday const, Coulomb const, Gravitational const, Stefan-Boltzmann Const, Speed of Light, Euler constant...

What's New

Version 5.7

Improve performance for better user experience

Ratings and Reviews

2.6 out of 5

5 Ratings

5 Ratings

Just perfect

Robert smithson 41

There is so far no better investment I have made on the App Store, I've been an apple user for 8+ years and this is my very first review I've written. I am yet to encounter any problems and if you are either in college or financing this calculator is perfect for you. Personally, I'm in college and I seriously doubt that I will ever encounter an equation that this calculator cannot handle. 10/10

bio rhythm problem


when switch to bio rhythm that interface not show probably, and could not switch to other function.

Developer Response

Dear our customer,

We are sorry for this inconvenience you are facing with our "Calculator" application. We have checked the Bio rhythm problem and can not replicate it. To fix this problem for your use, we hope you can provide us more detailed information, including:
1) Your device name? (For example: iPad 4)
2) OS version your phone are using? (For example: iOS 10.2).
3) Some screenshots how it did not show probably?
4) The internet status when the crash happens? (For example: Wifi, 4G, 3G, etc)?

As soon as we get more information from you, we will try to update the application in the upcoming version. We really hope that you will continue supporting us by giving us feedbacks and choosing our products in your application list.

If you have any other feedbacks, please kindly let us know.

Best regards,
PPCLINK Support Team
Email: support@ppclink.com
Website: www.ppclink.com

Makes a Swiss Army knife look basic

Piano Quartz

This is quite simply the most impressive calculator I've ever seen, ever, on any platform. If you work at NASA or the Large Hadron Collider, there is a slight chance it's missing a feature you would use, but I kind of doubt it.

Now if it's so awesome, why did I give it only four stars? Well, firstly, everyone else gave it five, so I'm not worried about swinging the score. :) My only concern about HiCalc is in the UX department: there are some interface details and behaviors that could be improved. The tab bar, for instance, doesn't show which module you're currently on. Probably a simple fix, and it would make the user experience that much better. The time calculator has another such minor issue: it doesn't let you clear the fields if you have just calculated a date difference and now want to calculate a time-only difference. Just put a little X button in each field when it's filled. There are other minor things here and there that could take this app from excellent to perfect.

I only mention these because this is the most versatile calculator in the App Store, and with some polish, it could also be the best on all counts. As it stands, though, you should still buy it today.


47.2 MB
Requires iOS 7.0 or later. Compatible with iPad.
Age Rating
Rated 4+
© PPCLINK Software
In-App Purchases
  1. Formula Toolkit $0.99
  2. Periodic Table $0.99
  3. UI upgrade $0.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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