ForeFlight introduced Sentry at EAA AirVenture 2018, and the small ADS-B receiver has found a following since then. At $499, it's a good value and packs a lot of features into a small device. We took it flying in a Cirrus SR22 to see how it performs, and to compare it to Stratus 3, the other popular ADS-B receiver for ForeFlight.
Pilots have lots of flexibility when it comes to integrating the iPad into the cockpit. It can be especially helpful when flying single-pilot in challenging weather or in busy airspace, assisting you with IFR route planning, clearances, airspace alerts, traffic avoidance and surface monitoring while taxiing.