Twin runs agents that control a real browser, execute code, call APIs, and chain multi-step workflows on a schedule — without requiring a developer to build each integration from scratch. The vendor positions this at SMBs replacing a stack of point tools: sales prospecting, invoice handling, recruiting pipelines, real estate lead qualification. Where it holds up is repetitive, browser-dependent work that other automation platforms treat as out of scope. Where it breaks is complex conditional branching — when the logic depends on what a previous step returned in an unexpected format, agent recovery works until it doesn't, and there is no self-hosted fallback when a workflow handles sensitive data. No permanent free tier means the cost clock starts after the trial ends.