Can I make flowcharts and ERDs?

Yes. Diagram Maker supports flowcharts, ERDs (entity-relationship diagrams), org charts, mind maps, sequence and Gantt diagrams, and free-form layouts with a full library of shapes.

Is there a code editor for diagrams?

Yes. You can switch between a visual drag-and-drop canvas and a text-based diagram-as-code editor at any time. Sequence and Gantt diagrams are built from the code editor.

Does it work offline?

Fully. Everything runs on your device with no login or cloud upload required. Your diagrams stay on your phone unless you choose to share them.

Diagram Maker: Flow & ERD — Draw flowcharts & ERDs on mobile.

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Diagram Maker: Flow & ERD

Design Toolsby Cosmovex

Draw flowcharts & ERDs on mobile.

A mobile diagramming tool for flowcharts, ERDs, org charts, and mind maps. Drag shapes on a visual canvas or type diagrams in a text editor, then export to PNG, PDF, or SVG — fully offline.

Flowcharts & ERDsVisual Canvas + Code EditorPNG/PDF/SVG ExportWorks Offline

Download on Google Play Privacy Policy

About Diagram Maker: Flow & ERD

Diagram Maker is a mobile-first diagramming tool for anyone who thinks in pictures. Build flowcharts, entity-relationship diagrams (ERDs), org charts, mind maps, and free-form sketches directly on your phone. Drop shapes onto the canvas, drag them around, resize and rotate with a fingertip, and connect them with labelled arrows — or switch to the text-based editor and type your diagram as code. The shape library covers rectangles, circles, diamonds, hexagons, parallelograms, cylinders, and more, with full control over fill colour, stroke, font, corner radius, and opacity. Lasso-select to move groups, pinch to zoom, two-finger drag to pan, and auto-snap to a grid for clean alignment. Every change supports undo and redo. When you're done, export your diagram as a 2× PNG image, a single-page PDF, an editable SVG vector, or a diagram-as-code file for any text-based workflow. Everything runs on your device — no login, no cloud upload, no waiting on a server. Your diagrams stay on your phone unless you choose to share them. Built mobile-first with a calm dark theme where the canvas fills the screen, Diagram Maker is available in 15 languages.

Screenshots

See it in action

Features

Everything You Need

Visual Drag-and-Drop Canvas

Drop shapes onto the canvas, drag to move, drag corners to resize, and drag the centre dot to rotate. Lasso-select multiple shapes and move them as a group. Pinch to zoom and two-finger drag to pan.

Flowcharts, ERDs & More

Build flowcharts with start, decision, action, and end nodes; ERDs for database design; org charts, mind maps, and idea trees. Rectangles, circles, diamonds, hexagons, cylinders, and more cover any layout.

Diagram-as-Code Editor

Prefer typing? Switch from the visual canvas to a text-based editor and write your diagram in plain text. Sequence and Gantt diagrams are built straight from code. Move between visual and code views any time.

Style Every Shape

Set fill colour, stroke, font, corner radius, and opacity on any shape. Double-tap to edit labels. Connect shapes with labelled arrows. Auto-snap to grid keeps everything cleanly aligned. Undo and redo every change.

Export to Any Format

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 compatible with any diagram-as-code workflow.

Offline & Private

Everything runs on your device. No login, no cloud upload, no waiting on a server. Your diagrams are saved locally and stay on your phone unless you choose to share them. Available in 15 languages.

Ready to Try Diagram Maker: Flow & ERD?

Free to download. No account required. Available on Android.

Google Play

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Cosmovex

Diagram Maker: Flow & ERD

About Diagram Maker: Flow & ERD

See it in action

Everything You Need

Visual Drag-and-Drop Canvas

Flowcharts, ERDs & More

Diagram-as-Code Editor

Style Every Shape

Export to Any Format

Offline & Private

Ready to Try Diagram Maker: Flow & ERD?

Frequently Asked Questions

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