flow-chart.io vs OnUML
| flow-chart.io | OnUML | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | $19/mo | — |
| Open source | No | No |
| Platforms | api, Web | Web |
| Free plan | Yes | Yes |
| Mermaid support | Yes | Yes |
| Diagram import | Yes | — |
| Platform | web | web |
| Export formats | SVG, PNG, PDF, JSON, Mermaid | PNG, SVG |
Both are listed in Best AI Diagram Generators. On Samsung Mobile US Press, flow-chart.io scores higher on our published basis.