This is very cool! I love the idea of having a device dedicated to local transit as opposed to having another thing pulling me to my phone. I wish there was something similar for American cities.
I haven't used this personally, though, so can't really vouch for it yet
I replaced the tidbyts with a Dakboard, specifically a https://shop.dakboard.com/products/pixeltoptech
I may expand to more regions but at this time the device is only CE certified and for the US I would need to get FCC.