After going shopping with the DW to JL looking for the perfect cot mobile to keep our DD (3 weeks old) occupied before she slept. After countless hours and mobiles later we left empty handed. We both thought in the mean time to look on google play and look at apps, then we found the perfect lullaby music box. DD only woke up twice for a feed and nappy change. If she stirred the app automatically started and got her back to sleep again. In conclusion..... It was free and we all got a great nights sleep.