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.
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.