Slack Costs $8 Per Member.
Your Book Club Can't Afford That.
Slack is built for software teams, not community clubs. At $8/user/month (Pro tier), a 50-person club pays $400/month — for a tool with no event RSVPs, no membership management, and no payment collection. Who's In gives you messaging, events, and membership all in one, starting free.
By Craig Pollard, Founder & CEO · Reviewed July 2026
Is Who's In a Slack alternative?
Who's In is an affordable Slack alternative for clubs and membership organisations. Key differences: $8.25/month flat for organizer — members free. Full event RSVP with capacity limits and waitlists. Member management, online bookings, payments and check-in live in one platform with simple, transparent pricing.
Why Organizers Are Switching from Slack
Many clubs tried Slack during the remote-working era. Most found it expensive, overcomplicated, and lacking basic event management tools. Here's a purpose-built alternative.
$8/user/month Pro — 50 members = $400/month
$8.25/month flat for organizer — members free
No event RSVP or capacity management built in
Full event RSVP with capacity limits and waitlists
No membership tiers or dues collection
Membership tiers with Stripe dues collection
Message history locked behind paywall on free plan
Full message history included at all tiers
Built for work — awkward social context for clubs
Built for clubs — casual, social, community-first
No QR check-in, Wallet passes, or LinkedIn badges
QR check-in, Apple/Google Wallet, LinkedIn badges
What Organizers Say on Trustpilot
"I love this app! It's perfect for organising events from walking groups to theatre trips, parties to weekends away. The plus one feature is brilliant. It takes all the stress out of organising events."
Mrs. A.
Social groups & walking clubs · Trustpilot review
Everything You Need for Community Events — Without the Complexity
- Group messaging with club announcements
- Event RSVP with capacity limits and auto-waitlists
- Membership tiers and dues collection via Stripe
- Web push notifications — no app needed
- QR code check-in at every event
- Apple & Google Wallet event passes
- LinkedIn verified organizer badges
- AI venue enrichment — auto-fills location details
- Recurring events with auto-scheduling
- Member directory and contact management
- Attendance history per member
- Mobile-first PWA — works on any device
- 2.7% flat fee on paid events — no monthly surcharge
- Event photo album — up to 10 images with lightbox, included on every event
- Downloadable documents — PDFs, agendas, waivers (up to 3 files, free)
- Organiser socials — 8 platforms auto-synced (X, Facebook, Instagram, YouTube, TikTok, LinkedIn, Snapchat, Reddit)
What We Don't Have (On Purpose)
- ×Per-channel workspace organisation (like Slack channels)
- ×Deep integrations with Salesforce, Jira, GitHub
- ×Video calling or Huddles
- ×Enterprise SSO and compliance features
We're a club management platform, not a business communication tool. If you need deep SaaS integrations, Slack is still the right choice for your work life.
Frequently Asked Questions
Everything you need to know about switching from Slack
Why is Slack so expensive for community clubs?▼
Slack's pricing model is designed for businesses — where companies pay per employee seat and write it off as a business expense. A 50-member community club paying $8/user/month on Pro would spend $400/month or $4,800/year. That's a completely unreasonable cost for a volunteer-run social group. Slack's free tier limits message history to 90 days and has no event management whatsoever.
Does Who's In have channels or spaces like Slack?▼
Who's In has club-wide messaging with announcements and event-specific discussion threads. It's designed around events and club activities rather than topic-based channels. This actually works better for most social clubs — the conversation naturally organises around what your club is doing rather than arbitrary channel categories. If you need channel-heavy team coordination, Slack remains the better tool for that specific need.
How do web push notifications compare to Slack notifications?▼
Who's In uses web push notifications — members get notifications to their phone or desktop browser without installing any app. This is actually better for clubs than Slack, where members must have the app installed and notification settings configured correctly. With web push, you install Who's In as a PWA once and get all notifications automatically. Slack's notification settings are notoriously complex and many club members end up muting channels.
Can I collect membership dues through Who's In▼
Yes — full Stripe payment integration with membership tiers. Set an annual or monthly due amount for each membership level, and members pay directly through the platform. You get instant notification of payments and a full payment history. Slack has no payment tools at all — clubs using Slack typically rely on separate Venmo, bank transfer, or PayPal requests, which creates significant admin overhead.
What about clubs that have already been using Slack for years?▼
Many clubs run both in parallel during the transition. Export your Slack member list, invite them to Who's In, and start posting events there. You can keep a Slack channel active for chat while doing all event management on Who's In. Most clubs find that once members start getting RSVP confirmations and event reminders through Who's In, they naturally shift most club communication there too.
Is Who's In suitable for large clubs with 200+ members?▼
Yes. Who's In handles clubs of all sizes. The $8.25/month flat fee applies regardless of member count — there are no per-member charges. Larger clubs particularly benefit from the attendance tracking, membership tier management, and automated event communications, which become very manual at scale without the right tool.
Stop Paying Per Member. Start Running Your Club Properly.
Messaging, events, and membership for $8.25/month flat. Members always free.
From $8.25/mo • No per-member platform fees • Cancel anytime
