Anyone knows about a plugin for buzztouch where i can have 5 pictures/buttons, like a coffee card coupon for a coffee bar, mark 4 as used with a code and get the next coffee for free?

It's a great idea, no plugin that I'm aware of. I was working on some code to do something similar to this but got sidetracked. I looked at this with Passkit for a project as well- Passkit is not free. The dev account is, but the passes you make expire after 30 days. On regular accounts they never expire. But this might be something worth looking at to give you some ideas- https://passkit.com/stamp-card-loyalty/ To use a Passkit in BT you would just reference the url of the pass they give you when you create it. Then just use the BT Custom URL plugin to display it in your app. The real magic here is the back end of the 'stamps' and keeping track of how many are used is handled by Passkit in your account.

Bakkmo- Check out this new thread and the videos of the two new plugins. Might just be what you need: https://www.buzztouch.com/forum/thread.php?tid=055F9C655BD179F1C320C6D&sortColumn=FT.id&sortUpDown=DESC&currentPage=1