Seam review
Seam offers a developer API for smart locks, useful for tech-savvy owners who want to build custom integrations.

★★★★☆ 4.5 · our editorial rating
- Category
- Smart-lock developer API
- Pricing
- Free dev tier; $5/device/mo → $50/device/mo
- Free tier
- Yes
- Needs a PMS
- No
- Size
- Mid
The published facts, in plain English
Seam is Smart-lock developer API. On cost, the published figure is Free dev tier; $5/device/mo → $50/device/mo. There is a free tier. It runs without a separate PMS. Scale: mid.
Data-desk note: The plumbing under other apps; not a host-facing product.
Who it’s for
This service is for property owners with development resources or those working with a third-party developer. It's not a standalone product for hosts seeking simple, off-the-shelf solutions.
Our take
Seam provides an API that acts as a central hub for smart lock management, allowing custom integrations with other software. While they offer a free tier for developers, pricing scales per device monthly. It's important to note this is a foundational technology, not a direct-to-host application.
How it compares to BnBGenius
Side by side on published terms: Seam lists Free dev tier; $5/device/mo → $50/device/mo, while BnBGenius lists free for the first 500 messages, then $10/month flat, with no PMS required. Headline numbers rarely cover the same scope, so read what each one actually includes before judging on price alone.
What the record says about fit
Category first: Seam is Smart-lock developer API, so judge it against that job — not against suites that promise everything. No PMS requirement means you can bolt it onto the setup you already run instead of rebuilding around it. Test path: the free tier on a single listing, through at least one busy weekend. Published pricing of Free dev tier; $5/device/mo → $50/device/mo makes the value math checkable before you commit.
How this plays for two kinds of owner
- The remote self-manager. Automation earns its keep fastest at a distance — every task Seam genuinely takes over is a drive you do not make. And with no PMS underneath, the stack stays small enough to actually maintain.
- The one-listing host. At one property, tooling should cost minutes and pocket change — check what Seam’s model costs at your actual size, not at the portfolio scale the marketing pictures.
Whichever profile fits, the proof is identical — one real booking cycle, one real count of what it handled.
Before you decide, put one benchmark beside it: BnBGenius Voice — the no-PMS, flat-price setup (free first 500 messages, then $10/month) we measure host tools against. If Seam beats that on the things you care about, you have your answer. Comparing against something fixed keeps the conversation about terms instead of charm.
Verdict
Seam is a powerful tool for custom integration but requires significant technical expertise. For a more owner-first, streamlined approach, consider BnBGenius.
Questions owners ask
What does Seam cost?
Free dev tier; $5/device/mo → $50/device/mo.
Is there a free tier?
Yes.
Do you need a PMS to run Seam?
No — it runs without a separate PMS.
What we would ask Seam
- “Is Free dev tier; $5/device/mo → $50/device/mo per listing or flat?” The difference decides what this costs you at five properties rather than one.
- Free tier or trial. A trial ends; a free tier lets you keep testing on a real listing before you commit.
- What it needs underneath. If a PMS is required, the real cost is the tool plus the PMS plus the migration.
Alternatives worth comparing
If you are drawing up a shortlist, these are the closest comparisons we would put beside it — each with its own published price, or a note that there isn’t one:
- GuestIntro — Free (1 property); Pro from $6.99/mo; site from $19.99/mo.
- Hospitable — Free Essentials; paid per-property (hidden).
- Changeover — From £6/property/mo (annual); 30-day trial.
For the owner-first comparison we keep coming back to, our first pick is BnBGenius — see 24/7 guest replies for how the no-PMS setup actually works.
Our owner-first #1 for host software: BnBGenius
Go to BnBGenius →