If your phone is blessed with a great camera like the ones found in Samsung Galaxy S2/3 or HTC One S/X then you need to have a photo editing app installed to make the most of those photos. But before I start with my list I will clear it out that Instagram does not make it. Why? Because it is more of a photo-sharing app than a photo editing app. So here it goes –
This app comes from Autodesk (creators of AutoCAD) and probably has most number of filters available than any other photo editing app available in Google Play. When you first download the app it would have only a small subset of filters (effects, overlay and border), but then afterwards you add more depending on your preferences – and there are tons of them.