Cheapest way to run open frameworks on tablet

hi folks,

I am looking for the best way to have: … …a tablet, that would only run an Openframeworks App…

and nothing else.

like with a Raspberry pi or linux, where we boot the app without the GUI

I guess I could “create” a tablet using Rpi , a TFT monitor, a battery and a gsm module

but I was wondering is there another way?

Like a budget tablet, that can be tweaked in such a way so that it only runs an Openframework App and nothing else?

All the best!

:beer: :beers: