Easy. Click the flag to start. Then type your preferred random test: ( flip a coin {coin}, roll a die {die} or pick a random number {number 1-50} ). Then type the number of times you want it to make the test (eg, 10), and wait. its almost instant. a list will pop up with your test results. Then click the flag and start again!
This project came to me out of nowhere. "can I make a random dice roller?" and here it is!