What FlowSimp is
A browser-based flowchart maker and online whiteboard. Two modes — structured shapes for diagrams, freehand pen for whiteboarding. Both run entirely client-side. Both are free. Forever.
What FlowSimp isn't
A workspace. A collaboration suite. An enterprise platform with SSO, RBAC, and per-seat pricing. If that's what you need, Lucidchart or Miro are better fits.
Ready to draw?
No signup. Opens instantly in your browser.
How it stays free
FlowSimp runs cheaply because there's no heavy backend — boards live in your browser unless you opt into a free account to sync them. No ads, no upsell, no "AI credits".
Get in touch
Found a bug? Use the feedback button in the bottom-right of the editor. Want a feature? Same place.