Spreadsheets don't reschedule themselves, flag the critical path, or catch resource clashes. ProjectPlanOS does — and you can import your existing Excel or CSV plan in seconds.
Spreadsheets are where most project plans start — and where they quietly break. One slipped date means hours of manual re-linking, formulas rot, and nobody trusts the timeline. ProjectPlanOS keeps the flexibility you like about Excel but adds an AI planner and a real scheduling engine on top, so your plan stays live instead of stale.
New to this style of planning? The getting-started guide walks through creating your first project, importing from Excel, and how auto-scheduling works.
Describe the goal and the AI drafts phases, tasks, owners and dependencies. No VLOOKUPs, no broken references.
Move one task and the engine re-flows everything after it. Your launch date is always the real one.
Drop in the spreadsheet you already have — columns auto-map, dates just work, nothing is left behind.
Draft your first plan in under a minute. No credit card, no training, no setup.