There are a few questions and comments about more minimalistic hardware to run RoasTime on. I just thought I would add one such comment myself:
I use a Microsoft Surface Go 2 for my Bullet, which is the smallest of the Windows tablet-PCs. The Go 2 is a few years old and, in as much as you can find one, is pretty affordable.
The only issue there is, is that it has only one USB-C port, so you need a USB-C → A adapter or a USB-C → Micro cable to connect with the Aillio.
RoasTime runs nice and smooth, and with the keyboard detached, it can even be stuck on the wall if you so desire.
/ Thomas Nielsen