The App appears on your phone. It explains that it can change reality by replacing a single word in a sentence.
At first you don’t believe it. Until the app proves itself by having you test it out. You see a blue car parked on the street and the sentence appears.
“A blue car is parked on the street.”
First you change the word blue to red. Things seems to get blurry for a second around you. Looking back to the car it is now red.
The app then congratulates you and says you one free sentence of your choice to change. You only get one use out of this however so choose wisely. You can change anything you want anywhere you want. However the app will vanish after one use and there is no going back…