I'll rate this high as it does what it's suppose to do. What would make this even better would be adding these 2 functions. Cropping, and horizon leveling. As of now, you can open your photo album and crop it in there, but it would be nicer if it were built in to the app.
Also, you can take the fish eye effect out but the horizon still may be at a 30 degree angle. You can rotate the photo using the 2 finger twist, to level the horizon with the grid, but when you save it, it is still at a 30 degree angle. It doesn't hold for some reason.
I still like this app though.