A player-finding app could help organisers fill a missing place without sending messages to every contact. Useful matching details include location, playing time, approximate standard, cost and whether the game is casual or competitive.
Joining should have a clear status: requested, accepted, waiting or cancelled. An organiser may need to approve a player before sharing private joining instructions. Payments and refunds should follow the actual booking arrangement rather than assuming every game works the same way.
Launch around a small number of venues or regular games so there is a useful local pool of players. Test last-minute withdrawals and replacement invitations. Include a way to report problems and avoid publishing personal telephone numbers or precise private locations as part of a public player profile.
Related reading: Membership and Club Management Software.