https://www.angroid.gr/android-efarmoges/droidstats-%ce%bf-%ce%bb%ce%bf%ce%b3%ce%b1%cf%81%ce%b9%ce%b1%cf%83%ce%bc%cf%8c%cf%82-%cf%83%ce%b1%cf%82-%cf%85%cf%80%ce%bf-%ce%ad%ce%bb%ce%b5%ce%b3%cf%87%ce%bf