The baby alarm is designed to call a configured phone number once noise is detected.  This way you don't have to be in the same room as the baby all the time.  The app will first play a pre-recorded sound clip of "Mum's voice" in an attempt to soothe the baby back to sleep.  If that fails, it will call you.  You can also configure options such as how long noise should be detected before BM&A takes action.  One thing that I didn't like here was the inability to set my own times as they are hard coded.  I could choose 5 seconds or 15 seconds but I think 10 seconds would be perfect.  You can also set the sensitivity level of the mic.  I found I had to set it to the most sensitive however I know that all children are different and perhaps a child that snores quite loudly would need a less sensitive setting.  Overall the alarm does what it claims.  With the setting at 5 seconds you will get a few false alarms and at 15 seconds some babies may be in a full cry by then however the developers seem open to suggestions and are willing to listen to their paying public.

BM&A is a very simple app but has a useful purpose.  I did run into a few bugs here and there, none of which I could replicate afterwards but overall it worked fairly well.  There is no support for back grounding so if you close the app and launch it again it seems to hang.  A simple restart fixes that.  The activity log is very handy as it will save sound clips of every occasion noise was detected.  One thing to note is that your phone can still receive calls while the app is running so your phone must be put in silent mode manually to avoid waking your baby.  This is a very good app with potential to be even better.