just press start timer. the alarm is a bell. there are a few glitches, but it DOES accurately time 30 minutes. you can only pause the timer for up to 150 minutes, or 2 1/2 hours.
if u need it. 100% by me (except from bell sound from scratch library so then about 99.5% by me i guess) 4/9- i just added a pause/resume button. there could be some glitches. if there are please let me know. thanks! 4/15- wow i actually needed to use this lol