Hello, I just checked the site and have a project plan in mind, as the app is fairly simple:
(1) check for existing lists and provide a menu to select them, plus a button to create a new list
(2) if new list: get entries until done, provide button to save inputs
(3) create a wheel with the necessary number of partitions
(4) rotate the wheel for an appropriate time, get and present a random value from the list, either by "go!" button, defining rotation time or precalculated random value, or maybe by dragging the wheel on the touchscreen and slowing down till halt
(5) keep choices in a JSON file for small, simple and fast access
This could be done in a few days and doesn't really justify all those 200€+ bids.
I could start right away and if you wish for any specific icons/graphics/sounds I can of course include what you send me. Please feel free to contact me for any details or questions.