SippySpaces
SippySpaces makes real-world connection visible.
The call goes great and then you never hear from them again.
I'm building SippySpaces, real-time community data for coworking spaces and events, and I'm at the stage where I'm doing a lot of the outreach myself, so I've had a lot of these demo calls lately. The good ones are the ones that mess with your head the most. Someone leans in, tells you the problem you're describing is exactly the one they have, says the thing every founder is secretly desperate to hear, which is some version of this is great, and you come off the call certain that one's going to land. And then it just doesn't. No reply, no booking, no actual no, just a kind of quiet that you sit there refreshing your inbox against.
For a long time I read that silence as a verdict on me. I went back over the call in my head, what did I say wrong, was it the price, was it the way I explained it, was it me. And occasionally maybe it was. But mostly I've come to think it's two much more boring things that happen to stack on top of each other.
The first is that they meant it when they said they liked it, but liking something has never once moved it onto anyone's list for the week. Nothing actually changed for them the day after our call. The problem they have was annoying before we spoke and it's exactly as annoying now, which is to say annoying enough to nod along about on a call and not annoying enough to do anything about on a Tuesday. Interest and urgency feel like the same thing in the room and they are completely different animals, and a good call is weirdly good at hiding which one you've actually got.
The second is that the person sitting across from me getting excited is very often not the person who can actually say yes. In coworking it tends to be the community manager, the one who lives the problem every day, who feels it the most, who lights up when someone finally describes it back to them. They are exactly the right person to be excited and almost never the person who signs the cheque. So the enthusiasm is real, it just runs straight into some internal wall I never get to see, and then they go quiet: 'I loved it but I can't get my boss to care' isn't an easy thing to type.
And when you put those two together you get the thing I think most people building something early know in their gut, which is that a pipeline can look busy and feel warm and still be sitting on a big pile of almost.
I haven't solved this, but I've stopped trusting how a call feels and started watching what people do after it, because whether someone sends the thing they promised to send, or replies to a boring logistics question within a day, tells you about a hundred times more than how warm the conversation was. And I've stopped pitching to the person who already loves it, because they don't need another pitch, they need help selling it to someone else in the building, and that's a totally different thing to hand them, and I was getting it wrong for months without noticing.
Curious if other people read the post-call silence the same way, and of course any advice is very welcome.
I'm Kat, a product manager turned solo founder building SippySpaces from Berlin. No external funding. In founding pilots now.
The problem I kept hearing
I spent months talking to coworking operators and event organisers. The same thing came up in almost every conversation: they know when their space is working. They can feel it. Members are connecting, conversations are happening, people are coming back because of who else is in the room.
But when someone asks them to prove it, all they have is occupancy data and NPS scores. Neither tells you whether anyone actually talked to each other.
What I built
SippySpaces is a real-time visibility layer for physical spaces. Members scan a QR code. No app download, no account creation. They appear on a live broadcast board, see who else is open to connecting, and can create or join Moments (short group gatherings around a topic or interest).
After the session, the operator gets connection data. Not just who showed up, but who connected, what they wanted to talk about, and how they rated the experience.
The product works for coworking spaces and events. The features differ slightly by context but the core is the same: make the people in the room visible to each other, lower the friction to connect, and give the operator data on what actually happened.
Where I am now
The product is live. I'm shipping updates every week and in active conversations with operators across Europe, North America, and Africa for founding pilots.
No revenue yet. That's the honest answer. Getting operators to commit to a pilot with a brand new product from a solo founder is the hardest sales motion I've ever attempted. The product resonates in every conversation, but converting interest to commitment is a different skill from building.
What I've learned so far
A few things that might be useful to other founders in the early B2B SaaS stage:
Outreach format matters more than volume. I tested two formats: a full product pitch with booking link in message one, and a short signal-based opener with one question and no pitch. The short format gets more replies. The pitch comes in message two after they've already engaged.
Your buyer has a buyer. Coworking operators don't just need to prove community value to their members. They need to prove it to their landlord, their investor, the person deciding whether to renew the lease. That second audience changed how I position the product.
No app, no account is a real differentiator. Every operator I've spoken to says the same thing: members won't use the existing portal. Building Sippy to work with a QR scan and zero setup wasn't a feature decision, it was a survival decision.
Solo founder B2B SaaS is lonely. The IH community and conversations with other founders have been the main thing keeping me grounded. If you're building alone, find your people.
What I'm looking for
Honest feedback. If you run a coworking space, an event, or any physical space where people gather and you care whether they connect, I'd love to hear whether this resonates or whether I'm solving a problem that isn't painful enough to pay for.
Also open to connecting with other solo founders building in the community/events/proptech space.
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