Sine

Sine is a facility management platform for coordinating visitor entry, contractor compliance and activity across sites. It is best suited to organizations that need to manage contractors as well as visitors, particularly across multiple locations. Its breadth is a strength, but paid plans use custom pricing tied to expected check-in volume.

Overview

Sine brings visitor check-in, contractor records and site activity into one system. The activity dashboard gives facility teams a view of expected arrivals, people currently on site and searchable check-in history. That shared view is useful when site access and contractor compliance are part of the same operation; a team that only needs a visitor log may find the broader platform more than it needs.

Core supports customized check-in flows, electronic entry documents and branded kiosks. The contractor tools cover onboarding, inductions, permits, certifications and compliance records, giving the platform a substantial role beyond reception. Sine also includes visitor photo capture, roll calls and emergency tools.

Key features

Check-in and contractor records

Digital invitations, FastTrack QR, host notifications and self-serve kiosks give visitors several ways to enter and alert hosts. Roll calls and emergency tools are relevant to sites that need to account for people on site. Contractor onboarding and compliance records make Sine a stronger fit for facilities with recurring contractor activity than for organizations seeking only appointment or visitor registration.

Mobile access and integrations

The Sine Pro mobile app supports nearby-site check-in through geofencing or QR codes, visitor notifications and mobile badge printing. Those options suit sites where arrivals happen away from a fixed reception desk. Integrations include Microsoft Teams, Slack, Outlook, Entra ID, Eventbrite, Gallagher, Honeywell EBI, Cm3 and webhooks, connecting Sine with a range of workplace, identity and access systems.

Plans are sized by estimated check-in volume, include unlimited hosts and apply a fair usage policy when usage exceeds the plan level. Unlimited hosts remove a per-host constraint, while volume-based sizing means organizations should match the plan to expected arrivals and account for the over-plan usage policy. Workflows is a separate add-on and requires Core.

Pricing

Sine is a paid product with no free plan for the full platform. Its Sine Pro mobile app is priced at $0 and provides visitor, contractor, staff and courier check-in for iPhone and Android. The Small, Medium, Large and Enterprise plans have custom pricing, so buyers need a quote to compare their costs.

• Sine Pro mobile app: The free app covers check-in on iPhone and Android. It is the lowest-commitment option for mobile check-in, but does not include the paid plans' full Core visitor management package.
• Small: Includes Core visitor management, self-serve kiosks, digital invitations, FastTrack QR, host notifications, roll calls and geofence check-in/out. It suits organizations starting with visitor management and site attendance without the additional tools in higher tiers.
• Medium: Adds FastTrack pre-registration, an asset register and issuance, Entra ID sync, SAML SSO and an Outlook invitation add-in to Small. It better fits organizations that need identity and asset workflows alongside visitor management.
• Large: Adds a public API, real-time visitor screening, access control and SecureBridge options to Medium. These capabilities make it the tier to consider for organizations connecting Sine to broader systems or access processes.
• Enterprise: Includes everything in Large, with tailored packaging for organizations onboarding 20 or more buildings and preferred pricing. Its scope is aimed at larger multi-building deployments.

Small through Large start with a 30-day free trial. After the trial, Sine contacts the customer with billing information. There is no published price to use for budget comparisons, and the trial terms do not establish a renewal price. Workflows also requires Core, so its cost should be considered separately when evaluating that add-on.

Platforms

Sine supports web, Android, iOS and API access. The Sine Pro app is specifically offered for iPhone and Android, while the platform's web and API options extend beyond mobile check-in.

Who it's for

Sine is a good fit for facilities teams that manage both visitor entry and contractor compliance, especially when they need a view of expected arrivals and current on-site activity. Organizations with multiple buildings can consider Enterprise's tailored packaging for deployments starting at 20 buildings. A small team looking only for a simple visitor log, or one that needs a fixed public price before speaking with sales, has less reason to choose it.

Pros and cons

• Pro: Visitor check-in and contractor onboarding sit alongside permits, certifications and compliance records, which suits sites managing both groups.
• Pro: The activity dashboard combines expected arrivals, current on-site presence and searchable check-in history for day-to-day site oversight.
• Pro: Unlimited hosts avoid a per-host seat cap, and the mobile app supports geofenced and QR check-in plus badge printing.
• Con: Paid plans have custom pricing and are based on estimated check-in volume, making upfront cost comparisons harder.
• Con: Usage above the selected plan level is subject to a fair usage policy, so organizations with variable arrival volumes need to weigh that when sizing a plan.
• Con: Workflows is an add-on that requires Core, so it cannot be adopted on its own.

Alternatives

For contractor-focused vendor management, BCS is worth considering when a permanent free plan for up to 25 vendors and COI tracking are the priority. RealPage Vendor Credentialing may suit property managers who want vendor credentialing and ongoing criteria checks at no cost to the manager.

Breezeway for Student Housing is the alternative to consider when the work centers on student housing operations, with a free one-property plan covering checklists, cleaning scheduling and payments. ComplyFlow is a fit to compare for contractor registration and worker licensing, including company registration at no charge and a worker licence priced at A$35 a year.

Fyxt, Evalystar, Hili Billing and Revyse are other options to compare.

For category browsing, see Property Management Vendor Management Software and Visitor Management Software.

Verdict

Choose Sine if your facilities operation needs visitor check-in, contractor compliance records and a current view of who is on site in one platform. Its main advantage is that those jobs connect across web, mobile and integrations; its main drawback is that paid plan costs depend on a custom quote and estimated usage. Look elsewhere if your needs are narrower or you need predictable published pricing before engaging a vendor.