Why no "situational awareness" (collision avoidance) apps for cell phones?

On Thursday, May 3, 2018 at 8:50:59 AM UTC-7, Dan Marotta wrote:
The ADS-B in my C-180 provides collision warning.Â* Shortly after the
installation I was flying a GPS arc to an ILS (practice approach) when I
got an aural warning:Â* "Traffic 3 o'clock high, 1 mile!"Â* I had been
monitoring the traffic on my tablet, ATC had been reporting each of us
to the other, and I knew I was below the traffic.Â* Since we were both
VFR, no vectors were issued.

My system is a Garmin 430 WAAS GPS and GTX-345 ADS-B In/Out
transponder.Â* Not really suitable for a glider, but great for a light plane.

Can anyone say if a Trig TT22 with TN70 will provide collision warnings?


The TT22 and TN70 gives you ADS-B Out only, unlike your GTX-345 that does ADS-B Out/In (1090ES Out and 1090ES In and UAT In). Glider pilots would normally get ADS-B In via a PowerFLARM (1090ES In only) or if they have room for a separate display then in some cases a Stratus or Stratux receiver (and if you do that get a dual link receiver).