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No. This is the whole reason PopIn exists. When you invite someone by email or phone number, they receive a link that opens straight to your event page. They can RSVP, add their name, see the address, and get reminders without ever creating an account or downloading anything. PopIn is built around the idea that the barrier to attending an event should be zero. Friends who DO have PopIn get a slightly richer experience (notifications in-app, post-event memories, the social feed) but it isn't required, and nobody is locked out for not signing up.

Yes, completely free. Creating an account, creating events of any size, inviting guests by any channel (email, SMS, share link), broadcasting updates to attendees, and managing RSVPs are all included with no cost and no tier limits. We don't sell user data, we don't run ads against your guest list, and there's no premium tier dangling features you need. If we ever introduce paid features in future, it'll be specifically for things like advanced analytics for advertisers or large-organisation tooling, never for the core event-planning flow.

Three big differences. First, your guests don't need an account, which means people who left Facebook years ago can still attend your party without signing up for anything. Second, PopIn isn't trying to maximise the time you spend on it. There's no infinite feed engineered to keep you scrolling. The feed is small, it's mutual friends only, and the centre of gravity is the event you're planning, not algorithmic content. Third, PopIn isn't selling ad inventory against your social graph, so the way your event reaches people is straightforward: you invite them, they reply. No mystery algorithm deciding who sees what.

Yes. The invite screen accepts pasted emails and phone numbers, and on mobile you can pull straight from your contacts (with your permission, only when you tap the picker). You can also generate a shareable link to drop into a group chat. The same event link works regardless of which channel you used to send it, so you don't have to pick: invite some people via SMS, send the link to a WhatsApp group, and post it to your story. It all funnels back to the same guest list.

Use the shareable link. Every event you create has a unique URL you can copy and paste anywhere: into a group chat, into Slack, into an Instagram story. People who open the link can RSVP using just their first name and an email or phone number, which they can use to receive reminders. They don't need to create an account, and you'll see them on your guest list the moment they reply.

By default, yes. Events you create are visible to the people you've invited (and your friends if you set the event to friends-only). They're never published to a public discovery feed unless you explicitly opt in to Google indexing, which is off by default. PopIn doesn't sell your event data, doesn't include guest emails in ad-targeting, and gives you per-event controls for who can see what. If you want a fully private event, set visibility to invite-only and only people you invite will be able to view it, even with the link.

Yes. Every event has a guest list view showing everyone you've invited, broken down by RSVP status: Going, Maybe, Can't make it, and Pending. You can see when each person responded, message individual guests, and broadcast updates (date change, address change, anything urgent) to everyone going via email, SMS, or push depending on how they're set up. As a host you also get a real-time count at the top of the page so you know exactly how many to plan for.

PopIn nudges them automatically. After you send the initial invitation, a gentle reminder goes out if they haven't responded within a few days, and another one closer to the event date. You can also resend an invite manually from the guest list at any time. The reminders are designed not to feel like spam: one initial invite, one nudge before the event, that's it. We're trying to get them to RSVP, not annoy them out of attending.

Yes, any field. Change the date, the address, the description, the cover photo, the guest list. All editable up until the event ends. If you change something important (date or location), PopIn sends a notification to every guest who's RSVPd Going or Maybe so nobody shows up at the wrong place. There's a small in-event banner that highlights what changed when guests next open the event page, so they don't miss the update.

Yes. PopIn is built as a progressive web app, which means you can use it from any modern phone browser (Safari on iPhone, Chrome on Android) without installing anything from the App Store or Play Store. You can also add it to your home screen and it'll behave like a native app: full-screen, fast, notifications. Native iOS and Android apps are something we may build eventually, but for now the web app covers the full experience on every device.