Magic Calculator: Mentalism

Magic Calculator turns your phone into a calculator that shows the number you choose — while working perfectly for every other sum anyone tries.

Pick a skin that matches the phone in your hand, set your force, and hand it over. There is nothing to notice.

LOOKS LIKE THE REAL THING
18 original calculator themes — dark and light, round keys and soft squares, warm minimal and neon grid. Pick one that suits the phone in your hand and nobody looks twice.

A REAL CALCULATOR
Every sum is genuinely correct. Correct operator precedence, percentages that behave the way people expect, parentheses, square root, powers and factorial. Hand it to anyone to check — it survives inspection, which is the whole point.

THE FORCE
- Fire once on the next equals, then disarm automatically
- Let them verify two or three honest sums first, then force
- Queue several numbers for a multi-phase routine
- Match decimal places so your number never looks out of place
- Only fire when the digit count is believable

SECRET TRIGGERS
Arm the force without anyone seeing: a tap in a dead corner, a short rhythm of taps, a swipe across the display, a volume-key pattern with the slider suppressed, one sharp shake, or a timer that arms itself with no touch at all.

EVEN THE HOME SCREEN
Change the app's launcher icon and name. Hand someone a phone whose home screen says "Calculator" and nothing about the device suggests a magic app is installed. Six icon designs, matched to how each platform styles its own utilities.

PANIC RESET
Hold the display for a second and everything clears and disarms instantly. For the moment a spectator takes the phone out of your hands.

THE PEEK
Quietly remembers the last number a spectator typed, so you can reveal it ten minutes later as an afterthought.

ROUTINES INCLUDED
Six worked routines with full setup and performance notes, from a beginner opener to a hands-off effect where you never touch the phone.

BUILT FOR PERFORMING
No ad ever appears while a force is armed. Stage Mode switches every ad off for thirty minutes, so nothing can interrupt a show.

FREE, WITH COINS
Free to download, with no purchases of any kind. Arming a force costs 1 coin, and so does Stage Mode. You start with 12 coins and get 2 more free every day. Need more? Watch an optional short video for 3 coins, whenever you choose.

Magic Calculator is a prop for magicians and mentalists. It is also a genuinely good calculator.