Google camera app is good at their position. Google develop it to capture background blur photos. It has three options on the left edge, which is seeing by sliding from edge. The main from these is lensblur. It has some other option at the bottom which can be find in any standrad device cameras. I also use this app for a couple of days. I search on play store, but I find nothing in it. Then I try on browser and I find it. When I install it, it runs mostly like my device camera. I take photo with lensblur camera at day light, but it shows light is too low. When Again I try it, it shows you move your device very fast.I try this again and again, but I capture only couple of photos. I do not use it again because it consume lots of time.