Reviewers largely praise Trello for being simple, visual, and easy to adopt, especially for personal planning, small teams, and straightforward project tracking. Boards, cards, checklists, due dates, templates, mobile access, and collaboration features come up often as practical strengths, with some users also noting helpful automation, integrations, and APIs. The main caveat is scale: reviewers say Trello can feel limited or confusing for complex workflows, multi-board oversight, hierarchy, and dependencies. Some also mention pricing limits on advanced features, plus occasional slowness, sync issues, and glitches.