For those flying Jeti and not wanting to use Jeti, a fellow pilot and friend (Wayne...who posts here and over on RCG) shared with me his setup for using the Jeti MSpeed sensor with the built in Vario functionality.
Essentially instead of using the vario tone for altitude, it is configured instead for airspeed.
First you to set a nominal approach speed, +/- a band, say +/- 5mph. This is comfortably above stall speed.
If you are in this band (say your preferred landing speed), then the vario is silent.
If you are below or decreasing below, then the vario tone goes lower in pitch/frequency
If you are above or increasing above, then the vario tone goes higher in pitch/frequency
You can turn this function ON/OFF via simple 2 position switch during flight and only turn it on during landing
The tone to me is easier than listening to or processing a number call out. Just keep speed to maintain (silence) and you're in the groove. If it's increasing, you're too fast, if its decreasing you're too slow