calculator

This is a desktop calculator prank application written in Python, with a README in Vietnamese. It looks exactly like a normal calculator on the outside, with a dark theme similar to the Windows Calculator, keyboard support for entering numbers and operators, a memory system, and a history panel. The trick is what happens when you press the equals button.

Instead of showing the result, pressing equals launches a long chain of fake obstacles designed to waste the time of whoever is using it. The sequence includes a rigged prize wheel that always loses, a fake license expiration notice, a login screen that rejects every password, a subscription plan selector with a countdown timer and a "Later" button that dodges the mouse cursor, a terms-of-service dialog that requires scrolling all the way down, a fake credit card entry form that refuses every card number on the first attempt, an absurd fee breakdown screen, a one-time password step with a 30-second cooldown, one of six minigames chosen at random, a nonsensical captcha, a video advertisement whose skip button keeps resetting, a five-star rating survey, and a social sharing step where every option reports failure. After going through all of that, the calculator gives a subtly wrong answer, with a small error introduced on purpose. If the session sits for about 90 seconds, it expires and the whole sequence starts over on the next press.

The six minigames are all completable: charging a leaking battery bar by clicking fast, clicking a button that moves away five times, guessing a number between one and five, a whack-a-mole game, typing a displayed phrase, and pressing stop at the right moment on a moving bar.

The README notes clearly that no real money is involved and no data is sent anywhere. Everything entered into the card form, OTP field, or password field is silently discarded. The project is described as a joke to play on friends.

A safe exit is built in: canceling or closing popups three times in a row reveals a "this is a joke" screen with an option to switch to a real calculator mode that gives correct answers from that point on. The app can be packaged into a standalone Windows executable using PyInstaller for easy sharing.