A calculator for everyday use
Handle standard arithmetic and percentages, then look back at earlier calculations in history. It works naturally for quick calculations outside a performance, too.
K-TRICK APP
iPhone APP
FORCE
CALCULATOR
An everyday calculator. A magic tool when the moment calls for it.
Force Calculator is an iPhone calculator app shaped by professional magician KOBA’s live performance experience. Use it as a familiar calculator every day, then access the Pro magic features during a routine. The standard calculator features are free to use.
FEATURES
Everything a performance needs, inside a familiar calculator.
For first-time users, interactive tutorials demonstrate each magic mode on the actual calculator screen. Follow highlighted keys and automatic input to learn Target, Time, and Automatic Adjustment modes step by step.
A magic tool during a routine
When needed, Pro unlocks features created for magic. The interface retains the appearance of a normal calculator so it can fit naturally into a performance.
Adapt it to your performance
Choose target results, times, and other details to suit the routine. Several modes are available for different performance situations.
DESIGNED FOR iPHONE
Familiar from the first tap.
The button layout and number display are carefully designed to feel at home on iPhone. Force Calculator supports interfaces tailored to iOS 18 and iOS 26, along with calculation history and language switching.
FORCE CALCULATOR
Force Calculator is now available on the App Store.
Use a familiar calculator every day, then bring its magic features into your next performance. If you currently use the web version, please also review the migration information.