Diagram Maker: Flow & ERD

CosmoVex

Contains adsIn-app purchases

About this app

Diagram Maker is a visual diagram editor for Android. Create flowcharts, entity-relationship diagrams (ERD), and Mermaid charts on the go. Draw connections, add shapes, edit properties, and visualize your ideas without complexity.

FEATURES:
- Visual canvas editor — drag shapes, draw connections, arrange your diagram
- Flowchart shapes — boxes, diamonds, ovals, and more
- Entity-Relationship diagrams (ERD) — create database schemas visually
- Mermaid editor — write code to generate flowcharts and diagrams
- Undo / Redo support — fix mistakes instantly
- Multiple themes including dark mode
- Works fully offline — no account required
- Export diagrams as images
- Clean, intuitive interface

PERFECT FOR:
- Developers designing system architecture and database schemas
- Students visualizing algorithms, flowcharts, and concepts
- Designers prototyping workflows and user journeys
- Anyone who needs to create clear, structured diagrams quickly

TECHNICAL DETAILS:
- Supports Mermaid syntax for diagram generation
- Export to PNG format
- Works on Android phones and tablets
- No internet connection required

Diagram Maker gives you a clean canvas to express ideas visually — whether you're sketching a flowchart, designing a database, or coding diagrams with Mermaid. No subscription needed, no friction.