Are you like me and constantly misplacing your phone in the house somewhere? Down the back of sofas? In the toilet? In the bed covers somewhere or just on some random ledge? Well we have the perfect app for you today in the form of Marco Polo. All you have to do is shout out "Marco" and the phone will reply by calling back saying "Polo". If you don't like those words there are 30 others that you can input. It doesn't just stop there however as the phone will raise the volume automatically if you had it on silent and it will also send pop up notifications to find it in the dark. One of those incredibly simple apps that you wish you had thought of first. No more lost phones ever again!