Unlike Voice Alarm it actually keeps ringing loudly until you actually notice it and dismiss the alarm and unlike so many other apps it speaks just fine with the phone in lock mode in your pocket.

I needed a voice countdown timer and this is perfect for my needs.I use it to assign a specific timeline so that he knows when I expect my autistic son to put on specific articles of clothing in the morning.He's easily distracted and I've found that countdowns help him with tasks.If I could change anything I would just add the ability to customize (record) an intro and ending message for each timer.