Short answer: they solve different problems. CourtReserve runs your facility — bookings, memberships, billing, staff. Pickle IQ runs your session — balanced games, waiting list, round robins, live Player View. Clubs often use both.
If you run a club or facility and need reservations, memberships, and payments — CourtReserve. If you organize open play, round robins, or league nights and need fair on-court matchmaking — Pickle IQ. Running a club? Use both.
CourtReserve is aimed at facility operators: private clubs, indoor pickleball venues, tennis clubs adding pickleball. Its core value is letting members log in, book a court, pay dues, and letting staff manage the schedule. If none of that describes your problem, it is overkill.
Pickle IQ is aimed at whoever is actually running the play: the person at the park with 16 people and 3 courts, the club pro running Wednesday-night open play, the league coordinator running a rotating-partner round robin. Its core value is generating fair games, keeping the waiting-list queue moving, and giving every player a live view of "what am I playing next and with who" on their phone.
They are not really competing — they compose. CourtReserve handles everything up to "the players show up." Pickle IQ handles everything from "the players are here" to "the session's over." If you already pay for CourtReserve, adding Pickle IQ costs nothing and covers the one thing CourtReserve doesn't do: run the session.