When a spreadsheet is enough
A shared Sheet is fine for a tiny group with one stage focus. Columns for time, stage, and artist beat arguing in the group chat.
Where Clashfinder wins
Purpose-built clash finders highlight overlaps automatically, work on your phone in a muddy field, and — in Radar — connect to reminders and a permanent gig diary.
Spreadsheets rarely survive the week after the festival. Radar stores the artists you logged so Concert Wrapped and your venue map stay truthful.