Kahrbon vs. Sine

At a glance

Best for

Best for companies on Microsoft 365 or Google Workspace that want a browser-based visitor kiosk and host alerts in Teams.

Sine

Best for

Best for sites where contractors and staff pass the same front desk as visitors and each group needs its own check-in rules.

Cataleo does not name a winner. Both statements come from the vendors themselves.

Full Comparison

Criterion	Kahrbon	Sine
Free trial	15-day free trial, no credit card required	30-day free trial on the Small, Medium and Large plans; Enterprise through sales
API	Not stated	Yes, a public API on the Large plan, plus webhooks
Hosting	Not stated	Cloud, hosted on Amazon AWS
Made in	United States	Adelaide, South Australia
Check-in methods (kiosk, QR, mobile)	A lobby kiosk in a tablet browser, or check-in on the visitor's phone with a one-time QR code; one-tap check-out from the visitor's email	Self-serve iPad kiosk with the SinePoint Pro app, digital invitations and FastTrack QR codes, check-in in the Sine Pro mobile app, and geofence auto check-in and check-out for repeat guests
Host notifications	Email and in-app alert to the host on arrival, plus Microsoft Teams arrival cards per location	Push notifications in the Sine Pro app, SMS and email, with SMS included under a fair usage policy; Microsoft Teams and Slack integrations on all plans
Visitor agreements and NDA signing	Visitors sign a visitor agreement at check-in	Check-in forms show required documents before check-in and can include NDAs, signatures and questions
Watchlist and security screening	A watchlist matched by email address at check-in	Real-time screening of guests against third-party sources through Family Watchdog on the Large plan, plus a Descartes Visual Compliance integration on Large
Badge printing	Not stated	Self-adhesive badges by visitor type on Brother label printers, printed from the iPad, web dashboard or mobile app, with QR code check-out; digital badges on the visitor's phone
Visit history and reporting	Visit history with CSV export, plus an audit log	An audit trail of every check-in and check-out, which the vendor describes as a record of who has been on-site and when, plus digital roll calls from the Small plan
Integrations and API	Microsoft 365 or Google Workspace with directory sync, and Microsoft Teams	Public API on the Large plan to pull visitor data, manage sites and hosts and create invites; webhooks, and integrations with Microsoft Entra ID, Outlook and access control systems
AI features	stated Yes	No
Deployment	Not stated	Cloud (SaaS)
Integrations	Microsoft 365, Google Workspace, Microsoft Teams	more entries Microsoft Teams, Slack, Microsoft Outlook, Microsoft Entra ID, Eventbrite, Gallagher, Inner Range, Honeywell EBI, Aruba, Descartes Visual Compliance, Avetta

Compare more tools

Row where the values differ The small markers point at the lower number, the longer list or the stated feature. They describe the data, they are not a verdict.

The short version

Key Differences

Free trial Kahrbon 15-day free trial, no credit card required Sine 30-day free trial on the Small, Medium and Large plans; Enterprise through sales
Made in Kahrbon United States Sine Adelaide, South Australia
AI features Kahrbon Yes Sine No
Check-in methods (kiosk, QR, mobile) Kahrbon A lobby kiosk in a tablet browser, or check-in on the visitor's phone with a one-time QR code; one-tap check-out from the visitor's email Sine Self-serve iPad kiosk with the SinePoint Pro app, digital invitations and FastTrack QR codes, check-in in the Sine Pro mobile app, and geofence auto check-in and check-out for repeat guests
Host notifications Kahrbon Email and in-app alert to the host on arrival, plus Microsoft Teams arrival cards per location Sine Push notifications in the Sine Pro app, SMS and email, with SMS included under a fair usage policy; Microsoft Teams and Slack integrations on all plans

Every line is one datapoint from the table above, picked automatically. Nothing here is written text.

The trade-offs

Strengths and Limitations

Kahrbon

Strengths

Check-in on the visitor's own phone with a one-time QR code, besides the tablet kiosk
Host alerts by email, in the app and as Microsoft Teams cards per location
Sign-in with passkeys or emailed codes
15-day trial without a credit card

Limitations

No published prices; pricing goes through sales
The watchlist matches visitors by email address
What happens to the data after cancelling is not stated on the vendor's pages

Sine

Strengths

Geofence check-in and check-out for repeat guests in the Sine Pro mobile app
Unlimited hosts (employees) on all plans
Check-in flows can be set per visitor type, for contractors and staff as well as guests
30-day free trial on the Small, Medium and Large plans

Limitations

No published prices; plans are sized by average check-in volume
Public API and third-party visitor screening start at the Large plan
Some access control integrations, such as Gallagher and Honeywell EBI, may carry additional charges

Plans

Pricing

Kahrbon

Price on Request

Visit site

Sine

Small Not stated Kiosk check-in, digital invitations, FastTrack QR codes, host notifications, roll calls.
Medium Not stated Adds FastTrack pre-registration, asset register, Entra ID sync, SAML single sign-on and the Outlook add-in.
Large Not stated Adds the public API, real-time visitor screening and access control as a paid add-on.
Enterprise Not stated Tailored packaging for organizations onboarding 20 or more buildings.

Visit site

What users say

Review Scores · opens after launch

Kahrbon

Ease of use: Not rated yet
User interface: Not rated yet
Onboarding: Not rated yet
Support and service: Not rated yet
Value for money: Not rated yet
Features: Not rated yet

No reviews yet. Nothing has been published here yet, and no score is shown. How a review is checked before it appears is described below.

Sine

Ease of use: Not rated yet
User interface: Not rated yet
Onboarding: Not rated yet
Support and service: Not rated yet
Value for money: Not rated yet
Features: Not rated yet

No reviews yet. Nothing has been published here yet, and no score is shown. How a review is checked before it appears is described below.

How we check reviews

Before sending, the author has to confirm three things: that they have used the product themselves, that they work neither for the vendor nor for a competitor, and that nobody is paying them for the review. We also ask whether the vendor invited them to write it. That answer is required, either answer is accepted, and it stays with the review.

Every review is read by a person before it appears. An email address is required and is confirmed: we send a link to it, and a review does not reach us until the author opens that link, so a review has a sender who was reachable at least once rather than being anonymous. Where what somebody writes needs backing, we ask them for evidence that they used the product, and a review that does not get it is not published. We publish positive and negative reviews alike, we pay nothing and offer nothing for a review, and we accept none that was bought or incentivised.

What we cannot do is verify a purchase. There is no shop here and no account, so whether the author really used the tool rests on their own declaration, on whatever we ask them for, and on the plausibility of what they write. We say so rather than implying a check that does not exist.

A vendor cannot buy a review, and cannot have one removed or changed because they dislike it. We remove or edit a review only if it breaks our rules or the law, for example a false statement of fact. Paid placement has no effect on which reviews appear or on any score.

Read the full version on our methodology page

Where this comes from

Kahrbon https://kahrbon.com/ · checked against the official source on 2026-11-11

Sine https://www.sine.co/visitors/ · checked against the official source on 2026-11-11

This table lists factual criteria taken from information the vendors publish themselves. For how we put it together, see the methodology.