Best for
Best for a single office or front desk that wants self-service visitor check-in with host alerts on the chat tools it already uses.
- Small and mid-sized
Visitor Management Comparison
Greetly vs. Sine
At a glance
At a glance
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 | Greetly | Sine |
|---|---|---|
| Starting price | From $99 / month Essential plan, billed yearly. All plans are billed annually. | Not stated |
| Free trial | Not stated | 30-day free trial on the Small, Medium and Large plans; Enterprise through sales |
| API | Yes, the vendor names an API and webhooks, plus Zapier on Pro | Yes, a public API on the Large plan, plus webhooks |
| Hosting | Not stated | Cloud, hosted on Amazon AWS |
| Made in | Not stated | Adelaide, South Australia |
| Check-in methods (kiosk, QR, mobile) | Tablet kiosk, or a QR code or link on the visitor's own device with no app; pre-registration and returning-visitor sign-in | 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 | Hosts are alerted by Slack, Microsoft Teams, Google Chat, email, text or voice call, and backup team members can be notified too | 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 NDAs and other documents online at check-in | Check-in forms show required documents before check-in and can include NDAs, signatures and questions |
| Watchlist and security screening | Admins set up watchlists that flag restricted people at check-in; government-issued ID verification and US driver's license scanning are on Pro | 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 | Badges with visitor name, photo, host and location on supported Brother printers; on Pro | 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 | A searchable visitor logbook with reporting on visitor data and trends | 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 | API and webhooks, Zapier on Pro, and integrations with Microsoft Teams, Slack, Google Workspace, Okta and Azure Active Directory | 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 |
| Deployment | Cloud (SaaS) | Cloud (SaaS) |
| Company size | Small and mid-sized | Not stated |
| Integrations | Microsoft Teams, Slack, Google Workspace, Okta, Azure Active Directory, Zapier | more entries Microsoft Teams, Slack, Microsoft Outlook, Microsoft Entra ID, Eventbrite, Gallagher, Inner Range, Honeywell EBI, Aruba, Descartes Visual Compliance, Avetta |
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Adds a column to the table, from the tools in this category.
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
- API Greetly Yes, the vendor names an API and webhooks, plus Zapier on Pro Sine Yes, a public API on the Large plan, plus webhooks
- Check-in methods (kiosk, QR, mobile) Greetly Tablet kiosk, or a QR code or link on the visitor's own device with no app; pre-registration and returning-visitor sign-in 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 Greetly Hosts are alerted by Slack, Microsoft Teams, Google Chat, email, text or voice call, and backup team members can be notified too 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
- Visitor agreements and NDA signing Greetly Visitors sign NDAs and other documents online at check-in Sine Check-in forms show required documents before check-in and can include NDAs, signatures and questions
- Watchlist and security screening Greetly Admins set up watchlists that flag restricted people at check-in; government-issued ID verification and US driver's license scanning are on Pro Sine Real-time screening of guests against third-party sources through Family Watchdog on the Large plan, plus a Descartes Visual Compliance integration on Large
Every line is one datapoint from the table above, picked automatically. Nothing here is written text.
The trade-offs
Strengths and Limitations
Greetly
Strengths
- Unlimited users, check-ins and hosts on the Essential plan
- Host alerts by Slack, Teams, Google Chat, email, text or voice call
- Visitors can check in on their own phone without installing an app
- Watchlist alerts are part of the Essential plan
Limitations
- All plans are billed annually
- Badge printing and ID scanning need the Pro plan
- The pricing page does not say whether a plan covers one location or several
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
Greetly
- Essential $99 / month Billed yearly. Unlimited users, check-ins and hosts, multi-channel notifications, watchlist alerts, visitor photos, online document signing and pre-registration.
- Pro $159 / month Billed yearly. Adds badge printing, ID verification and US driver's license scanning, two-way texting, Zapier, a digital mailroom and several kiosks at once.
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.
What users say
Review Scores · opens after launch
Greetly
- 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.
Where this comes from
Where this comes from
Greetly https://www.greetly.com · checked against the official source on 2026-11-12
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.