good app.
i agree about the sound notification. it's better.
if i hold the phone and i don't close the lid there is no big deal.
if i put it on a desk (probably dusty or with some liquid) and leave there is no way to understand that with vibration. sound will be heard from some distance.
if you like put 2 check boxes so we will be able to chose what we like. one of them or both of them.

thanks again