From the start I tried the free version. I really liked it (after one night), so I purchased it so I could do away with the adds.
I really like the volume increase mode with music for waking up, nice feature rather than an over bearing loud buzz or tone. That being said, it seemed that the alarm would randomly not work? Sometimes it would work, then you snoozed it and it would not sound again. Almost like every two to three times the alarm would not work? I can usually wake up before the alarm sounds (internal clock I guess) but I like to hit the snooze too.
I am disappointed because I really like the look of the clock and its features but I cant count on it. Sorry.
Makeitdark about Alarm Clock Bud Pro