This how-to workflow is designed for the New Collector from Esri, formerly known as the Aurora project. This will only capture live Orthometric heights with an Eos Arrow receiver running the Geoid12B in the Eos Tools Pro app. Doing that will allow Collector points to capture real-time NAVD88 elevations.
Is Renting your field equipment like GPS and rugged tablets a better financial decision than buying?
Well, that depends, but the answer is likely Yes.