Best Diagram Master Apps

250+ iOS apps curated and reviewed

3.6 avg rating
16 free apps
Updated August 2026

With an average user rating of 3.6★, the diagram master category is one of the App Store's strongest. Browse all 250+ apps we track, sorted so the most loved ones surface first.

Compare top Diagram Master Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Sidus LinkSidus LinkFree4.3★ (626)NoNoAug 2026
2Handy DiagramHandy DiagramFreeNoYesAug 2026
3Simple DiagramSimple DiagramFreeYesNoMay 2026
4LucidchartLucidchartFree4.6★ (5.3K)YesNoAug 2026
5EdrawMax - AI Diagram MakerEdrawMax - AI Diagram MakerFree3.4★ (33)NoYesAug 2026
6Flowdia DiagramsFlowdia DiagramsFree3.4★ (66)NoYesAug 2026
7SourceCanvasSourceCanvas$8.99NoNoAug 2026
8GG AI DiagramGG AI Diagram$4.99NoNoAug 2026

Top Picks for Diagram Master

Sidus Link#1

Sidus Link by Sidus Link Ltd.

Editor's Choice
🔧 Utilities
4.3😊(626 ratings)
Free
Sidus Link screenshot 1
Sidus Link screenshot 2
Sidus Link screenshot 3
Sidus Link screenshot 4
Sidus Link screenshot 5
Sidus Link screenshot 6

Control film lighting fixtures directly from your mobile device. This app offers advanced modes for white light, gels, color, and effects, with features for scene setup and collaboration. It supports over 100 fixtures and simplifies complex lighting workflows.

What We Love

  • 🚀 Intuitive and easy to use
  • 🔒 Seamless connectivity
  • 💡 Powerful lighting control features
  • 🎨 Excellent color management

Room to Improve

  • 🐛 Occasional connectivity issues
  • 🔁 Frequent need to reconnect
  • 🕰️ Slow response times

More Diagram Master apps to explore

4
Lucidchart
Lucidchart
Lucidchart
Flowchart & Diagram Maker
Free

Create and view diagrams like flowcharts, mind maps, and org charts on your mobile device. This visual workspace facilitates real-time collaboration and data visualization. Diagrams sync instantly to your account and can be exported in various formats.

Create and edit diagramsPre-built templatesDrag-and-drop functionality
📊 Productivity
(5.3K)
free with in-app purchases
5
EdrawMax - AI Diagram Maker
EdrawMax - AI Diagram Maker
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.

Photo to editable diagram conversionAI-powered diagram generation40,000+ templates and 17,000+ symbols
📊 Productivity
(33)
free with in-app purchases
6
Flowdia Diagrams
Flowdia Diagrams
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.

Create flowcharts, mind maps, BPMN, and network diagramsIntuitive shape connection and element additionCustomizable shape appearance
📊 Productivity
(66)
free with in-app purchases
7
SourceCanvas
SourceCanvas
SourceCanvas
visual svg,mermaid,diagram
$8.99
🔧 Utilities
(0)
8
GG AI Diagram
GG AI Diagram
GG AI Diagram
Create diagrams with AI.
$4.99
🛠️ Developer Tools
(0)
9
PrivyMermaid: AI Diagram
PrivyMermaid: AI Diagram
PrivyMermaid: AI Diagram
Generate, Fix & Edit Diagrams
Free

This privacy-focused editor allows developers and technical writers to create, edit, and preview diagrams completely offline. Your sensitive data remains on your device, ensuring maximum security and control over your diagrams.

100% Private & Offline diagram editingInstant offline diagram renderingNo cloud sync for enhanced data privacy
🛠️ Developer Tools
(0)
free
10
AI Text To Diagram Generator
AI Text To Diagram Generator
AI Text To Diagram Generator
Create Mindmaps, & Flowcharts
Free
📊 Productivity
(0)
11
Note to Whiteboard Diagram
Note to Whiteboard Diagram
Note to Whiteboard Diagram
Visual Learning Made Simple
Free
📊 Productivity
(0)
12
Every Diagram AI
Every Diagram AI
Every Diagram AI
Create Diagrams with AI
Free
💼 Business
(0)
13
Simple Sequence Diagram AI
Simple Sequence Diagram AI
Simple Sequence Diagram AI
AI Sequence Diagram Creator
Free
🛠️ Developer Tools
(0)
14
Apollon - UML Modeling Editor
Apollon - UML Modeling Editor
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.

13 diagram notationsTemplates and blank canvasTouch-friendly interface
🛠️ Developer Tools
(2)
free
15
Free-Body Diagram
Free-Body Diagram
Free-Body Diagram
MasterStatics Concepts Anytime
Free
📚 Education
(0)
16
DrawExpress Diagram Lite
DrawExpress Diagram Lite
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.

Gesture-based diagrammingFlowchart creationUML diagramming
📊 Productivity
(25)
free
17
UML Mobile
UML Mobile
UML Mobile
UML Image Converter
Free
🛠️ Developer Tools
(0)
18
Value Charts Pro: Flow Diagram
Value Charts Pro: Flow Diagram
Value Charts Pro: Flow Diagram
Diagram and Flowchart Maker
$4.99
📊 Productivity
(0)
19
Grafio 4 - Diagram Maker
Grafio 4 - Diagram Maker
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.

Automatic shape recognitionDrag and drop stencilsEmbed images
📊 Productivity
(252)
paid
20
Flow Chart, Block Diagram
Flow Chart, Block Diagram
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.

Automatic layout algorithmHand-drawn shape recognitionHundreds of pre-designed smart shapes
📊 Productivity
(11)
free with in-app purchases

FAQ about Diagram Master

What are the best diagram master apps for iPhone?
Sidus Link tops our diagram master apps ranking as of August 2026, with a 4.3-star average from 626 App Store ratings, and it's free to download.
Yes — 16 of the top diagram master apps we rank are free to download, including Sidus Link and Handy Diagram.
Sidus Link has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 250+ diagram master apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Sidus Link provides a comprehensive solution for controlling film lighting fixtures directly from mobile devices. It utilizes Sidus Mesh technology to connect and manage over 100 lighting fixtures, offering various control modes and workflow management features for professional filmmakers.
Key features include a decentralized Sidus Mesh network for direct fixture control without extra equipment, multiple control modes (White Light, Gel, Color, Effect), unlimited presets, QuickShot scene snapshots, on-set workflow management, and group control of fixtures.