These apps don't really compete — they serve completely different needs. FlightBase and ForeFlight are two of the most useful apps in a club pilot's toolkit — and they don't compete with each other at all. ForeFlight is an electronic flight bag: it handles flight planning, weather briefing, charts, navigation, and in-flight situational awareness. FlightBase is a club and school management platform: it handles aircraft booking, scheduling, logbook recording, and maintenance status. The question is never ForeFlight vs FlightBase. The question is which of the two you need, and the answer for most club members is both. You book through FlightBase. You fly with ForeFlight.