The most efficient calculator for iPad!

Discover a new reimagined way to use a calculator. We've collected time-saving features in order to design the most efficient and convenient calculator

Efficiency is the key

Calc One provides absolutely unique experience combining simplicity and
productivity, it was specially designed to save your time and reduce
the number of mistakes.


  • Natural numeric keypad: perform operations quicker and easier, reduce the number of mistakes and misentries
  • Smart bar: a few most recent scientific functions available in basic calculator mode
  • Calculator widget for the Notifications Center
  • Instant results with immediate live calculations: results are available before you tap the equal button
  • Two calculator modes: standard and scientific
  • Interactive calculation history is easy to access and use
  • Wide color selection to perfectly match each and every mood
  • The app size is less then 15 mb!
  • Calculator loads instantly

The calculator done right!

Use Calc One absolutely free with ads, or remove ads via in-app purchase.

Download & get in touch

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