Attendium

Attendium is a Swedish company founded by Piotr Blasiak in 2010 that provides a guest list management application for event organizers. The company was established after identifying a lack of high-quality software dedicated to managing guest lists. The platform is designed to replace traditional paper-based methods with a digital solution that operates across iOS, Android, and the web.

The core service revolves around a powerful guest list management tool that allows organizers to invite, manage, and check in attendees for events of any size, from small parties to large-scale functions with tens of thousands of guests. Key features include the ability to import guest lists from Excel or text files, duplicate entry detection, real-time synchronization across all devices, and offline functionality for check-ins without an internet connection. The system also provides real-time analytics on attendance and promoter performance. Organizers can manage staff permissions, limiting access for specific roles like promoters or door hosts. The platform also supports the creation of permanent guest lists that sync across multiple events.

Attendium operates on a subscription-based business model, offering several pricing tiers, including a free plan for small events and paid plans for professional and enterprise users with more advanced features. The company serves a global client base that includes nightclubs, event organizers, and public relations firms, with notable customers such as Stureplansgruppen, AIR Amsterdam, and Defected Records.

Keywords: guest list management, event check-in, event management software, attendee management, digital guest list, event technology, mobile event app, invitation management, RSVP tracking, event analytics, promoter management, offline check-in, event staffing, ticketing solutions, event planning