There's also bluetooth-enabled TNCs you can use with phone apps, but then you again have phone + TNC + radio.
All-in-one's seem to be mostly just trackers that send position, without extra features, at least the ones I've seen.
EDIT: the PicoAPRS can at least be used as a TNC+transmitter over usb, so that could be combined with a smartphone for a two-device pair.
There's also bluetooth-enabled TNCs you can use with phone apps, but then you again have phone + TNC + radio.
All-in-one's seem to be mostly just trackers that send position, without extra features, at least the ones I've seen.
EDIT: the PicoAPRS can at least be used as a TNC+transmitter over usb, so that could be combined with a smartphone for a two-device pair.