Best Diagram Concept Apps

Drawing Studio: Draw & AI

draw.io, Excalidraw, Mermaid

Free

This app combines freehand sketching, structured diagrams, and professional visuals into a unified workspace for knowledge management. Organize notes with folders, revisit past versions, and sync across Apple devices via iCloud. Export your creations in PNG or SVG formats.

Flowdia Diagrams

Flowchart & Diagramming

Free

Create professional flowcharts, mind maps, and various other diagrams with an intuitive interface. Easily connect shapes, add elements, and customize your designs. Export your work in multiple formats, including PNG, JPG, PDF, and SVG.

EdrawMax - AI Diagram Maker

Drawing Struct, Org, Flowchart

Free

This AI-powered diagramming tool transforms your ideas into professional visuals effortlessly. Create flowcharts, org charts, mind maps, and more with extensive templates and smart AI assistance. Collaborate seamlessly and export to various formats.

Lekh: Diagram & Flowchart App

Whiteboard, Mind Map & Sketch

Free

This app provides an infinite canvas for freehand drawing and creating various diagrams. It intelligently converts sketches into precise shapes and connections, supporting a wide range of diagram types for business, design, and planning.

Grafio 4 - Diagram Maker

Sketch, chart & explain ideas

$9.99

Easily create diagrams, charts, and visual explanations of your ideas. This app features automatic shape recognition, a vast library of stencils, and the ability to add audio notes and images to your creations. It's designed for intuitive use by everyone, not just professionals.

Flow Chart, Block Diagram

FlowChart & Workflow Creator

Free

Easily create complex flowcharts and diagrams on a tablet with an automatic layout algorithm and shape recognition. Design professional business graphics using a variety of smart shapes for different diagram types, then export your creations to multiple formats.

QuikFlow: Flowchart & Mind Map

Mind Mapping for Flowcharts

Free

Effortlessly create flowcharts and mind maps with automatic layout adjustments. Focus on your content while the app handles the visual organization. Expand nodes with rich text, images, and tasks, then share your creations in high-quality formats.

MindFlow - Struct Flow Diagram

simple struct and flow diagram

Free

Easily create structure and flow diagrams with a simple interface. Edit branches, change shapes and themes, and export your creations. Cloud backup and sync across devices are also supported.

Apollon - UML Modeling Editor

UML diagrams, anywhere

Free

Create UML and software design diagrams on your iPhone and iPad. Supports 13 notations, templates, and offline work. Export to various formats or share for collaboration.

Diagrams Notepad 3

Diagram - Flowchart - Mind Map

Free

Create and sync diagrams, flowcharts, and mind maps across iPhone, iPad, and Mac. Supports Apple Pencil for drawing and offers collaboration features. Export in various formats.

DrawExpress Diagram Lite

by DrawExpress Inc

Free

Create diagrams and flowcharts quickly and intuitively using simple gestures. Ideal for software design, business, and academic needs, it offers a pen-and-paper like experience for various diagram types.

WireGo

Circuit Simulator

Free

This app provides a realistic electrical circuit simulation experience for learning and design. It features an extensive component library, intuitive drag-and-drop controls, and smart error detection for both household and industrial circuits. Learn, design, and test circuits safely and efficiently on your mobile device.