Sine

Sine is a facilities platform combining visitor entry, contractor compliance and staff activity management. It is best suited to organizations coordinating people across one or more sites, particularly where contractor credentials matter as much as reception traffic. The trade-off is a paid, volume-based model with custom pricing for the main tiers.

Overview

Sine brings visitor, contractor and staff records into a single operating view. Its activity dashboard shows expected arrivals, people currently on site and searchable check-in history, giving facilities teams a practical way to monitor occupancy and investigate past visits. Contractor onboarding includes inductions, permits, certifications and compliance records, so the system reaches beyond a simple visitor log. That breadth favors active facilities and multi-site operators; a small office needing only occasional guest sign-in may not need the additional compliance scope.

Key features

Configurable entry and compliance

Sine Core supports customized check-in flows, electronic entry documents and branded kiosks. Digital invitations, FastTrack QR and host notifications help organize arrivals before they reach reception, while roll calls, emergency tools, visitor photo capture and badge printing support accountability on site. Contractor onboarding and compliance records are useful where access depends on current permits, certifications or inductions rather than a name on a guest list.

Mobile and site visibility

The Sine Pro mobile app provides nearby-site check-in with geofencing or QR codes, visitor notifications and mobile badge printing. This is a sensible fit for workers moving between locations or sites without a permanent kiosk. The dashboard's expected-arrival and current-presence views complement that mobile workflow, although organizations should account for the plan's check-in-volume boundaries.

Integrations and security

Integrations include Microsoft Teams, Slack, Outlook, Entra ID, Eventbrite, Gallagher, Honeywell EBI, Cm3 and webhooks. Medium adds Entra ID synchronization, SAML SSO and an Outlook invitation add-in; Large adds a public API, real-time visitor screening, access-control and SecureBridge options. Sine says it uses AWS infrastructure, encrypts data in transit, performs regular audits and penetration tests, and complies with GDPR requirements. Enterprise support can include setup, training, hardware and dedicated assistance, with a help site available to other customers.

Pricing

Sine offers a 30-day trial rather than a permanent free Core plan. Small, Medium and Large start with that trial; after it ends, Sine contacts the customer with billing information. Prices for these tiers are custom, so buyers need a volume and requirements discussion before they can compare total cost. Plans include unlimited hosts, but are sized by estimated check-in volume and apply a fair-usage policy when usage exceeds the selected level. That structure can work for predictable sites, while variable or seasonal traffic needs careful forecasting.

Plan differences

• Sine Pro mobile app: Free on iPhone and Android for visitor, contractor, staff and courier check-in. It is the low-commitment choice for mobile entry, but it is not a substitute for the broader Core platform.
• Small: Core visitor management, self-serve kiosks, digital invitations, FastTrack QR, host notifications, roll calls and geofence check-in/out. It fits a single or straightforward operation starting with structured visitor control.
• Medium: Adds FastTrack pre-registration, asset register and issuance, Entra ID sync, SAML SSO and the Outlook invitation add-in. Choose it when identity integration, asset handover or advance registration is operationally important.
• Large: Adds a public API, real-time visitor screening, access-control and SecureBridge options. It targets sites that need deeper automation and security integration.
• Enterprise: Includes Large features with tailored packaging for organizations onboarding 20 or more buildings and preferred pricing. It is the appropriate route for broad rollouts rather than a small deployment.

Sine Workflows is an add-on that requires a Sine Core plan, so workflow requirements increase the entry commitment.

Platforms

Sine supports Android, iOS and web access, plus an API. The free Pro app covers iPhone and Android, while API availability on the higher tier supports integrations and custom operational systems.

Who it's for

Sine suits facilities, property and operations teams managing visitors alongside contractors across multiple sites. It is particularly relevant where inductions, permits, certifications, emergency roll calls or access-control connections are routine. Organizations wanting a basic, free visitor register, or those unable to estimate check-in volume, should consider a simpler alternative.

Pros and cons

Pros

• One compliance and visitor workflow: Contractor records, inductions and permits sit alongside check-in activity.
• Strong site accountability: Roll calls, current-presence views, history search, photos, badges and emergency tools support real-world facilities procedures.
• Broad integration path: Identity, collaboration, calendar, access-control and webhook connections expand from Medium upward.
• Mobile flexibility: Geofenced and QR check-in help staff and contractors use sites without relying solely on a kiosk.

Cons

• No free Core tier: After the 30-day trial, ongoing use requires a paid plan.
• Custom pricing: Published costs are absent for Small through Enterprise, making budgeting and comparison slower.
• Volume-based terms: Fair-usage treatment above the estimated check-in level means busy periods need monitoring.
• Workflow add-on dependency: Sine Workflows requires Core, raising the baseline for teams that need it.

Alternatives

For a wider category comparison, see Visitor Management Software and Property Management Vendor Management Software.

• LogBook360 is a better starting point for budget-conscious teams wanting a free plan with up to 150 visitor check-ins per month.
• VisitorLog.io suits organizations needing a free-forever option for up to two facilities and 300 users.
• Lobbytrack is worth choosing when a freemium visitor system and a free starter allowance of 100 visitors per month are priorities.
• KyberAccess fits a single location seeking free basic check-in, badges, QR codes and email notifications.
• InstaCheckin is a simpler iOS and web alternative with a free one-location plan and unlimited visitors.
• Envoy Visitors is an alternative for teams comparing a free limited tier with a paid premium offering.
• JYL Visitor provides a web and Windows-focused visitor option with a 15-day free period.
• VisitFlow is a web-only alternative with a free single-location starter plan.

Verdict

Choose Sine when visitor reception, contractor compliance and multi-site activity need to operate together, especially with identity, access-control or API integration on the roadmap. Its configurable entry flows, mobile check-in and compliance records make it more capable than a basic sign-in tool. Look elsewhere if you need transparent pricing, a permanent free Core plan or only occasional visitor logging; Sine's custom, check-in-volume-based commitment may be more platform than those teams require.