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Cosmovex
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Diagram Maker icon
Cosmovex
Diagram Maker

Diagram Maker for Android

Draw flowcharts, ERDs, org charts, and mind maps right on your Android phone. Drag shapes on a visual canvas or type your diagram as code — then export to PNG, PDF, or SVG. No login, no cloud, fully offline.

Free on Google Play

Diagram Maker brings a complete diagramming workflow to your phone. Whether you're sketching a flowchart for a process, designing a database with an entity-relationship diagram, mapping a team's org chart, or capturing ideas in a mind map, the app gives you a canvas built for touch. Drop shapes, drag them around, resize from the corners, and rotate with the centre dot — all with your finger.

Two ways to build. Prefer a visual canvas? Lasso-select shapes to move them as a group, pinch to zoom, two-finger drag to pan, and let auto-snap keep everything aligned to a grid. Prefer to type? Switch to the diagram-as-code editor and write your diagram in plain text — sequence and Gantt diagrams are generated straight from code. Move between the two views whenever you like; your work stays in sync.

Style anything. Every shape supports fill colour, stroke, font, corner radius, and opacity. Double-tap to edit a label, connect shapes with labelled arrows, and undo or redo any change. The shape library covers rectangles, circles, diamonds, hexagons, parallelograms, cylinders, and more — enough for technical diagrams and free-form layouts alike.

Export and stay private. When your diagram is ready, export a 2× resolution PNG, a single-page PDF sized to your diagram, an editable SVG vector for any vector tool, or a diagram-as-code file for any text-based workflow. Everything runs on your device — no account, no cloud upload, no waiting on a server. Your diagrams stay on your phone unless you choose to share them, and the app ships in 15 languages with a calm, mobile-first dark theme.

What you get

Flowcharts, ERDs, org charts, mind maps & free-form diagrams
Visual drag-and-drop canvas — move, resize, rotate, group-select
Diagram-as-code text editor with sequence & Gantt support
Full shape library: rectangles, circles, diamonds, hexagons, cylinders & more
Style any shape — fill, stroke, font, corner radius, opacity
Labelled arrow connectors between shapes
Auto-snap to grid, pinch-to-zoom, two-finger pan
Undo and redo every change
Export to PNG (2×), PDF, SVG, and diagram-as-code
Fully offline — no login, no cloud, your diagrams stay on your device

Ready to try Diagram Maker?

Free to download. No subscription required to get started.

Download Free on Google Play