[ZenoArrow]

Feedback from HN can be unpredictable, but in this case I knew what the comments would be like because it's a great concept for an app.

What I like most about it is that encourages creativity. To extend this, do you think you'd extend the app to support drawing in the tiles? Also perhaps there could be a hidden tiles mode where all tiles are only revealed after the last one is in place.

I also agree with another commenter that it's important to know when a tile has been seen, but it looks like you have an idea on how to implement that.

Also, on the website homepage there doesn't seem to be any pictures of the app, I needed to go to the iTunes page before I saw how it looked, I'd say the homepage itself should be all you need to see to understand how the app will work.