Cabyn vs SharedKey: Two Different Tools for Shared Properties

If you share a cabin, lake house, or vacation home with family or friends, you've probably hit the same wall: coordinating who's there when, who can book, how to collect for cleaning costs, and how to keep guests in the loop without texting everyone individually. Two tools come up often in this space: SharedKey and Cabyn. They look similar at first glance. They're not.

What SharedKey Is Actually For

SharedKey was built by two brothers, Chris and Eric Thrall, to manage their family's log cabin in the Canadian Rockies. That origin matters. The problem they were solving was information: where are the spare keys, what are the house rules, who do you call when the water heater acts up, where should guests eat in town. Not booking flow or payment collection.

The result is essentially a cabin house manual app that also shows you a shared property calendar. It does that well. You get a color-coded booking display, a contacts directory, a local guide, a notice board for property owners, house rules and instructions, photos, and maps. Everything a new guest needs to not break anything or get lost. It runs $49 a year per property, has unlimited members and guests, and works on iOS, Android, and web.

If your primary pain point is "guests don't know where the fuse box is and keep texting me," SharedKey solves that cleanly.

What it doesn't have: a booking flow with confirmation steps, payment or donation collection, guest tiers with different rules, a trust network, community forums or events, guest reputation visible to other hosts, or ICS calendar sync with Airbnb or Google Calendar.

What Cabyn Is Actually For

Cabyn starts from a different premise. It's a private booking platform, not a shared vacation home organizer. No public listings. Hosts invite guests directly, and the whole system is built around managing who can book, when, and under what conditions.

The booking flow is real: guests request dates, the system checks availability and guest tier rules, and either auto-confirms or routes to host approval. Hosts can set up suggested contributions for costs like utilities and cleaning, and Stripe, PayPal, or Venmo sends 100% of that to the host with no platform fee per booking. The subscription is $10/month, and that fee is waived any month a trust network guest books.

The guest tier system is one of the more useful details. You assign guests to tiers (new, regular, founder) and each tier can have different rules: different booking windows, different approval requirements, different discounts. A founder-tier guest who's been coming for years gets more flexibility than someone you just invited.

The trust network goes a level deeper. Hosts can connect with each other and vouch for guests. If a host in your network has vetted someone, you can extend access based on that existing trust. Guest reviews are shared across all hosts, not siloed per property. If someone's a nightmare guest at your friend's cabin, you'll know before they book yours.

Cabyn also has community features: property forums, event listings, property update posts. And ICS sync means your Cabyn calendar can pull in blocks from Airbnb or VRBO if you're managing those alongside your private bookings.

Side by Side

Feature	Cabyn	SharedKey
Shared property calendar	Yes	Yes
Booking flow with confirmation	Yes	No
Payment / donation collection	Yes (Stripe, 0% fee)	No
Guest tiers with rules	Yes	No
Trust network	Yes	No
Shared guest reputation	Yes	No
House rules / info pages	Basic	Yes (dedicated feature)
Contacts directory	No	Yes
Local guide	Yes (local info pages)	Yes
Community forums and events	Yes	No
ICS calendar sync	Yes	No
Mobile apps	No (mobile web)	iOS + Android
Price	$10/month (free tier)	$49/year per property

Where They Overlap and Where They Don't

The honest overlap is the calendar. Both show you who's at the property when. But SharedKey's calendar is a scheduling display. Cabyn's calendar is the output of a booking system with rules, approvals, and payment attached. That's a meaningful difference if you want guests to actually request dates rather than just add themselves to a shared calendar.

Cabyn doesn't have a dedicated house manual feature the way SharedKey does. There's no equivalent of SharedKey's contacts directory or structured house instructions section. You can post property updates and add local info pages, but it's not organized the same way. That's a real gap if the information problem is what keeps you up at night.

SharedKey doesn't have a booking flow, and that's a real gap if coordinating who can actually book, under what terms, and with cost recovery is your main problem.

Which One Fits Your Situation

If you co-own a property with family members who all have equal access and you mostly need everyone to stay coordinated and know the rules: SharedKey is probably the right tool. It's simple, affordable, and purpose-built for that exact scenario. (If the co-ownership dynamic gets more complex — expense splitting, voting on shared decisions — take a look at our comparison with DoorPact, which handles that side of things directly.)

If you're a host who invites a wider circle, wants to manage access levels, collect contributions for costs, and build a booking system with real rules: Cabyn is the better fit. Especially if you're part of a network of hosts who share guests.

And some people might use both. SharedKey for the house manual side, Cabyn for the booking and guest management side. They don't compete for the same job in a meaningful way once you look closely. The shared property calendar is where they look similar. Everything else is pretty different.

If you've been running your cabin bookings through a group text and a shared Google Calendar, either one is an upgrade. If your needs are even lighter — a small group of regulars, no formal booking flow needed — Stayy is worth a look too: it's free and built for exactly that kind of simple, shared-calendar setup. The question is just which problem you want to solve first.