Free to start · No credit card needed

The event platform
for communities

Create events, manage RSVPs, split costs and stay connected — everything your community needs, nothing it doesn't.

Get started freeSee features

Trusted by community organisers across the UK

Features

Everything your community needs

Built for organisers who run recurring events — not for enterprise ticketing. Simple, powerful, focused.

Beautiful event pages

Create a public RSVP page in minutes. Share a single link — Fest OS handles the rest.

Summer Community Picnic

📅 Sat 14 Jun · 12:00
📍 Hyde Park, London
24 confirmed · 3 waitlistedRSVP

Smart registrations

Auto-confirm or waitlist attendees as your event fills up.

S
Sarah Johnson
Confirmed
A
Ahmed Khan
Confirmed
T
Tom Walker
Waitlisted
L
Lisa Patel
Waitlisted

Auto waitlist

Spot freed? The next person is promoted automatically.

3

on the waitlist

1 promoted today

Fair cost splitting

Split event costs across attendees. Track what's paid, what's owed.

AttendeeShare
Sarah J.
£8.75Paid
Ahmed K.
£8.75Paid
Tom W.
£8.75Owes
Total£210.00

Contact directory

Keep your whole community in one organised place.

S
Sarah J.
A
Ahmed K.
T
Tom W.

+39 more

Your public profile

One link for everything — share festos.app/your-community and let people find all your upcoming events.

festos.app/your-community
Summer Picnic · 14 JunRSVP
Quiz Night · 22 JunRSVP
Charity Walk · 5 JulRSVP

Broadcast to attendees

Message confirmed or waitlisted attendees in one click — no mailing list needed.

Subject

Reminder: Picnic is tomorrow 🎉

To: 24 confirmedSend

WhatsApp reminders

Chase outstanding balances with a single click — straight to their phone.

Hi Sarah, your balance is £8.75 for the picnic 🙏
via WhatsApp deeplink

Pricing

Simple, honest pricing

Start free, upgrade when you need to. No hidden fees, no per-ticket cuts.

Starter

Free

Forever. No card needed.

  • 1 active event
  • 30 attendees per event
  • 20 contacts
  • Public RSVP page
Get started free
Most popular

Community

£10 /month

For active community groups.

  • Unlimited events & attendees
  • Unlimited contacts
  • Broadcast emails
  • Custom RSVP form fields
  • WhatsApp reminders
  • CSV export
  • Contact history
Start free trial

Organisation

£25 /month

For teams managing multiple events.

  • Everything in Community
  • Up to 5 team members
  • Role-based access
  • Priority support
Get started

Ready to run better events?

Join community organisers across the UK. Start free, no credit card required.

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