Downloaded the app earlier today. Well done.

The only thing that I thought was a bit strange was on the sign-up page was my user name it said should be prefaced with the @ sign, so I put it in, unsure if I was supposed to or not. Of course, that errored out, but that would be a really nice little tweak. Just put the @ symbol in a slightly greyed out box to the left of the username box should do it.

I had been using the "Photo Stylist" app, but like your filters, and it seems to work a bit quicker too.

All the best