Charity events have a particularly painful ratio: every pound spent on platform fees is a pound less for the cause. Eventbrite charges roughly 6%+ on ticket sales — on a £20,000 fundraiser, that's £1,200+ to the platform. Smaller platforms can be even more.
Who's In charges 2.7% flat, plus Stripe's card processing. Same Apple Wallet tickets. Same Stripe checkout, with one price per event (run VIP or table-of-10 seats as their own event). A £20,000 fundraiser pays roughly £540 in Who's In fees vs Eventbrite's £1,200+.
For donor record-keeping and corporate sponsor packages, the CSV export does the heavy lifting; a Yes/No RSVP question flags who wants Gift Aid (UK), and the declarations themselves go in your own form. Free for free events. 2.7% flat on paid events. No monthly fee.