Principally, we believe teams shouldn’t have to be limited by user counts when deciding which project management system to use. Most are still clunky and cap at 10 users for free accounts- we’re planning to have a free forever plan for unlimited users (much like Gitlab).
Paid plans will be introduced in the near future and may include functionality for enterprise teams, full fledged integrations and/or smart features such as automated sprint management.
TLDR: the free forever plan will always be for unlimited users - no user caps. We've mindfully built the infrastructure and raised funding to support this.