If all you're looking for is task lists, kanban planning boards, and calendars for small teams of 15 users and fewer, Asana does have a free "Basic" option. However, the features that set this software apart, such as team workload monitoring or project timelines, are only available through the paid options. Asana also offers a decent 30-day free trial of its "Premium" feature tier. I could cancel the trial at any point within those 30 days and even if I did, those features would still be available to me until it lapses. This way you can try out all of the unique features Asana has to offer before committing to the product.