Observed arrival · 2026-09-10
Open Set, a tennis scheduler built around overlapping free time
A planned iPhone app that matches tennis players by genuinely available hours, proposes the exact shared slot, and holds a court while they confirm.
Field notes
Players enter the windows they can genuinely make, and the service looks for an overlap with a compatible member rather than asking them to negotiate from scratch. The page’s example turns Wednesday availability into a proposed 6:30–8:00 PM session, while the stated workflow sends at most one alert per day and holds the court for 24 hours during confirmation. The visible site is a launch page for an iPhone app, not evidence of a functioning scheduling service.
Observed signals
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Editorial observations of this landing page, not a rating.
One card from the complete issue