Years ago I flew a friend’s Corben. It had a very nice and expensive sensitive altimeter installed. Unfortunately his static system was a piece of tubing stuck up under the instrument panel. It fluctuated wildly. My trusty baro-altimeter watch has a slower response period and was not effected by the turbulence in the cockpit.
There is an app available where you can plug in local wind speed and direction and it provides TAS. And to make Ron B happy one can even define the airspeed ranges on the display. Is it perfect, no.... but its a free and getting better!!