Thanks! There is not yet but a few people have asked so maybe I should set one up!

Are there paid features you would be interested in? Would you want to buy a sticker or other merch?

my biggest ask would be for custom colour themes? And maybe a one-time paid app to avoid any future ads (if you are thinking of going down that road). An app or a game with ads and no way to pay my way out of them is an instant uninstall.

Someone in another comment mentioned that they do a timed challenge with friends. This would require signup etc. Even though I sometimes do a race against my son I'd probably not sign up/register just to do this. But if it's purely optional then I think there is some merit there and people who are signup happy may take advantage.

I may also like to see perhaps a second (premium) daily challenge. Not unlimited mode because that would just make me gorge on it and get fed up. But two daily challenges instead of 1 might be something to ponder. Maybe even for a small pay? Just don't make it obnoxious with nags and popups etc.

These are fun ideas!

The custom color theme is really interesting. Are there specific things you'd like to do with the custom color theme? That seems like a fun feature to build.

Having a second daily challenge would be great, but a lot of work. When I launch player puzzles I'm hoping to roll some of those out along with the daily puzzle so that on certain days you get a "bonus player puzzle!"