The "Osprey" boxes offered with the service have the option for a guide with channel numbers. I have an early one from the beta, but there have been newer revisions with more memory. The native client also has some minor features that the other apps have never received, like a mini guide, and last channel return.
They're a bit spendy new, but cheaper on eBay, though I'd suggest doing some research on the potential issues going that route.
But also keep in mind, there is a new box in the works. Performance has always been middling with the Osprey, but having a fully-featured remote compared to the ATV remote makes up for a lot.
Streaming boxes typically come with minimalist remotes that lack numeric keypads, so it's almost certain that none of the apps for other compatible devices (Roku, Amazon, etc.) support a numeric guide either.
If a traditional set top box experience is what you seek, the apps on 3rd party platforms will have a hard time meeting that goal.
I should also add that the Osprey box experience has also remained stable, while, as any subscriber (or app user in general) will tell you, each new app update has the potential for peril, and can result in an unpredictable, and often frustrating, experience as the quality of the app has fluctuated.