Calculator Tricks · Magic Calculator
Calculation is the facade. Surprise is the answer.
A genuinely useful calculator that hides a complete magic system — time predictions, number forces and sensor triggers. Hand it to a spectator and it is just a calculator.
- Requires
- iPhone with iOS 13.0 or later. Android with Android 5.0 or later.
- Languages
- English, 简体中文, 繁體中文, 日本語, 한국어, Español, Français
12,869,835−146,134−2,663,043
10,060,658
Calculator Tricks packs a fully working calculator and an entire close-up magic system into one app. Opened every day, it is simply a calculator that feels native. Long-press the equals key and it becomes the mind-reading prop in your pocket.
Its signature effect is the “time magic” made famous on the CCTV Spring Festival Gala: let a spectator press a few random digits, do a quick calculation, then flip the phone over — the result on screen is the exact current time. And it takes no sleight of hand at all.
One calculation, two ways to read it
12,869,835
The first digits they pressed
146,134
Digits from another spectator
2,663,043
Forced by the app
10,060,658
The time right now
The audience only ever sees an ordinary calculation — but read 10,060,658 as a timestamp and it is October 6 at 06:58.
Why it fools people
Time Prediction
Force the result to the current moment, with 16 time formats to choose from. It reads as an ordinary calculation — nothing to find.
Sensor Triggers
A flip or a flat lay quietly appends the secret digit, driven by the gravity sensor. Threshold and pose are yours to tune.
Hawkeye System
AI reads the spectator’s number in real time: mirror it onto your screen, or preset a sum you predicted in advance.
Skins That Pass Inspection
iOS, HarmonyOS, ColorOS, HyperOS, OriginOS, One UI, Google and more — auto-matched to your phone, icons included.
Cross-App Handoff
Take a screenshot and it jumps straight into Photos, Notes or WeChat — the “system calculator” they saw is just that screenshot.
Rhythm Assistance
A floating seconds readout and tunable haptics nudge you silently at the key moments, so the pacing is always yours.
Everything inside
- Wonder Moment: force the result to the current time, in any of 16 formats such as MddHHmm.
- Preset dates and numbers: the same engine predicts an anniversary or any number you like.
- The secret complement is computed for you — all you do is press plus.
- Hide the expression or the running result: the audience sees an unremarkable calculation.
- Flip to fire: flipping the phone triggers by default, with the gravity threshold set anywhere from −9.8 to +9.8.
- Flat or upright: pick the comparison (≤ / ≥) so any pose becomes your secret cue.
- Split input: with multi-trigger on, the complement lands in two moves — calmer and far harder to spot.
- Long-press equals to arm, press AC to exit clean, leaving no trace.
- Mirror Copy: the front camera reads the spectator’s number and it appears on your calculator.
- Preset Sum: your number plus theirs equals exactly the answer you wrote down.
- Capture from 15 to 60 FPS, with several consecutive confirmations before a digit is accepted.
- The floating seconds readout and haptics stand by the whole time — timing stops being guesswork.
How to perform it
Pick the effect
Choose “Wonder Moment”, a preset date or a number. The time prediction defaults to a 30-second delay, adjustable from 0 to 120 seconds.
Arm the magic
Long-press the equals key. A dot almost too small to see appears in its corner.
Hand it over
Let a spectator press a few digits and do a calculation. Right now, it is just a calculator.
Trigger naturally
After the plus sign, flip the phone or lay it flat. The app appends the secret digit in a motion that reads as an accident.
Reveal
Press equals: the screen shows the current time. Press AC and every trace is gone.
Pro tips
- Rehearse the trigger threshold in Settings first and find the flip angle that feels most natural to you.
- Keep the 30-second delay on the time prediction: long enough for suspense, short enough to stay believable.
- Leave the floating seconds on. It shows nothing but the seconds, yet pins the reveal to the right minute.
- Add a line and it doubles: “Those numbers were decided the moment they were pressed.”
Get the app
iOS
v3.1.415iPhone with iOS 13.0 or later. Android with Android 5.0 or later.
Download on the App Store