Best Diagram Expert Apps

216+ iOS apps curated and reviewed

4.3 avg rating
19 free apps
Updated May 2026

DWG FastView is the household name in diagram expert, but it's far from the only option. We track 216+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Diagram Expert Apps (May 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1DWG FastView-CAD Viewer&EditorDWG FastView-CAD Viewer&EditorFree4.4★ (1K)YesYesJul 2026
2EdrawMax - AI Diagram MakerEdrawMax - AI Diagram MakerFree3.7★ (28)NoYesJul 2026
3DrawExpress Diagram LiteDrawExpress Diagram LiteFree3.6★ (22)NoNoJul 2026
4LucidchartLucidchartFree4.6★ (5.3K)YesNoJul 2026
5Arduino Pocket ReferenceArduino Pocket ReferenceFree2.4★ (17)YesYesMay 2026
6Infographic MakerInfographic MakerFree4.3★ (20)YesYesMay 2026
7miMind - Mind Map, BrainstormmiMind - Mind Map, BrainstormFree4.8★ (357)NoYesJul 2026
8Visme - Presentation & ChartsVisme - Presentation & ChartsFree4.6★ (1K)YesYesJul 2026

Top Picks for Diagram Expert

DWG FastView-CAD Viewer&Editor#1

DWG FastView-CAD Viewer&Editor by Gstarsoft Co., Ltd

* Support 2D/3D CAD formats
Editor's Choice
📊 Productivity
4.4😐(1K ratings)
FreeAdsIn-App Purchases
DWG FastView-CAD Viewer&Editor screenshot 1
DWG FastView-CAD Viewer&Editor screenshot 2
DWG FastView-CAD Viewer&Editor screenshot 3
DWG FastView-CAD Viewer&Editor screenshot 4
DWG FastView-CAD Viewer&Editor screenshot 5
DWG FastView-CAD Viewer&Editor screenshot 6

This cross-platform CAD application allows users to view, edit, and create 2D and 3D designs on the go. It supports a wide range of file formats and offers advanced tools for precise drawing, measurement, and annotation, even offline.

What We Love

  • 🚀 Fast and efficient
  • 👍 Easy to use and intuitive
  • 💡 Convenient mobile CAD viewing and editing
  • 🚀 Quick file loading

Room to Improve

  • 🐛 Crashes and freezes
  • 💰 Subscription model with limited free features
  • 🔒 Lack of customer support and communication
EdrawMax - AI Diagram Maker#2

EdrawMax - AI Diagram Maker by Edraw Software Co., Ltd

Drawing Struct, Org, Flowchart
Strong Contender
📊 Productivity
3.7(28 ratings)
FreeIn-App Purchases
EdrawMax - AI Diagram Maker screenshot 1
EdrawMax - AI Diagram Maker screenshot 2
EdrawMax - AI Diagram Maker screenshot 3
EdrawMax - AI Diagram Maker screenshot 4
EdrawMax - AI Diagram Maker screenshot 5
EdrawMax - AI Diagram Maker screenshot 6

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.

More Diagram Expert 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
Arduino Pocket Reference
Arduino Pocket Reference
Arduino Pocket Reference
Become Expert in Arduino
Free

This app provides a comprehensive reference for Arduino programming, covering core libraries, syntax, operators, and various hardware shields. It includes examples for common functionalities like mouse control, GSM communication, and LCD displays, making it a valuable tool for makers and developers.

Arduino core libraries listMouse and Keyboard control examplesGSM communication examples
📚 Education
(17)
free with in-app purchases
6
Infographic Maker
Infographic Maker
Infographic Maker
Create Infographics & Timeline
Free

Easily create visually appealing infographics, mind maps, timelines, and diagrams. Access editable templates and a rich library of graphic resources to bring your ideas to life. Export your designs in high quality for sharing.

Editable infographic templatesQuick text editorRich graphic resources
🎨 Graphics & Design
(20)
free with in-app purchases
7
miMind - Mind Map, Brainstorm
miMind - Mind Map, Brainstorm
miMind - Mind Map, Brainstorm
Mind Mapping, Outline Ideas
Free

Organize your thoughts and ideas with a powerful mind mapping tool. Create detailed schemes, customize layouts, and share your work in various formats. Ideal for personal projects, professional planning, and creative endeavors.

Intuitive and user-friendly interfaceDozens of layouts, color schemes, and shapesExport to image, PDF, text, and XML
📊 Productivity
(357)
free with in-app purchases
8
Visme - Presentation & Charts
Visme - Presentation & Charts
Visme - Presentation & Charts
Docs, Slides & AI Poster Maker
Free

Create a wide range of visual content, including presentations, documents, infographics, and social media graphics. Utilize a vast library of design elements, templates, and AI tools to produce professional-looking visuals with ease, even without prior design experience.

Create presentations and pitch decksDesign infographics and flowchartsGenerate social media content
🎨 Graphics & Design
(1K)
free with in-app purchases
9
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
10
Diagrams Notepad 3
Diagrams Notepad 3
Diagrams Notepad 3
Diagram - Flowchart - Mind Map
Free
$22.99 | 100% OFF

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.

Cross-device sync via iCloudVector-based shapes and connectorsApple Pencil support
📊 Productivity
(51)
free with in-app purchases
11
AutoCAD
AutoCAD
AutoCAD
DWG Viewer & Editor
Free

Access and edit CAD drawings on the go with this official application. It provides essential drafting and design tools for creating, updating, and sharing 2D drawings from any device. Collaborate with teams and simplify workflows by accessing files from various cloud storage services.

2D file viewingCreate, edit, and share 2D drawingsOffline work and sync
📊 Productivity
(6.3K)
freemium
12
Boon: AI Logo Maker & Design
Boon: AI Logo Maker & Design
Boon: AI Logo Maker & Design
Graphic Designer: Poster Flyer
Free

Create professional logos and designs in seconds with a vast library of customizable templates and design resources. This app empowers users without design experience to craft unique branding for their businesses.

10K+ customizable logo templates6,000+ design resources (fonts, symbols, backgrounds)Logo editing anytime, anywhere
🎨 Graphics & Design
(82K)
free with in-app purchases
13
Xmind: AI Mind Map, Brainstorm
Xmind: AI Mind Map, Brainstorm
Xmind: AI Mind Map, Brainstorm
全功能的思维导图和头脑风暴效率工具,理清思路,捕捉灵感
Free

This app is a comprehensive tool for mind mapping and brainstorming, helping users organize thoughts, manage projects, and visualize information. It offers various structures, templates, and customization options to enhance creativity and productivity. Collaborate in real-time and export your work in multiple formats.

30+ Templates9 Structure TypesAudio Notes
📊 Productivity
(7K)
free with in-app purchases
14
ArcSite: Floor Plans and CAD
ArcSite: Floor Plans and CAD
ArcSite: Floor Plans and CAD
Sketch, Draw & Remodel On-Site
Free

This app allows contractors to create accurate floor plans and site layouts directly on-site. It streamlines the process of planning remodels, running takeoffs, generating professional proposals, and collecting payments, all from a mobile device.

Sketch accurate floor plans on-sitePlan remodels and renovationsRun takeoff and generate material lists
📊 Productivity
(8.6K)
free with in-app purchases
15
Linearity Curve: Graphic Art
Linearity Curve: Graphic Art
Linearity Curve: Graphic Art
Vectornator: Vectorize Drawing
Free

Create professional vector art and graphic designs on your mobile devices. This app offers powerful tools for drawing, illustration, and photo vectorization, allowing you to design logos, marketing materials, and digital art with precision and ease.

Bezier Pen and Node toolsAuto Trace for vectorizing imagesLayer system with blend modes
🎨 Graphics & Design
(14K)
free with in-app purchases
16
Numbers: Make Spreadsheets
Numbers: Make Spreadsheets
Numbers: Make Spreadsheets
Create impressive spreadsheets
Free

Design impressive spreadsheets with a flexible canvas, interactive charts, and powerful functions. Collaborate with others and access your work across devices. Includes tools for data analysis and text composition.

Apple-designed templatesFlexible canvas for layoutInteractive charts and pivot tables
📊 Productivity
(212K)
free
17
MindFlow - Struct Flow Diagram
MindFlow - Struct Flow Diagram
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.

Quick diagram buildingEasy branch editingCustomizable branch shapes
📊 Productivity
(31)
free with in-app purchases
18
Logo Maker: Art Design Creator
Logo Maker: Art Design Creator
Logo Maker: Art Design Creator
Create Poster, Flyer & Graphic
Free

Design professional logos, flyers, posters, and social media graphics quickly using AI-powered tools and a vast library of templates and assets. Perfect for small businesses, personal projects, and social media content creation.

AI-powered design toolsThousands of professional templatesRoyalty-free illustrations and photos
🎨 Graphics & Design
(17K)
free with in-app purchases
19
Mind Mapping
Mind Mapping
Mind Mapping
Brainstorm with ease
Free

Organize your thoughts and ideas into structured visual formats like mind maps, flowcharts, and outlines. This app offers extensive customization, sharing, and export options for seamless idea management.

Diagrams and mind mapsFlowcharts and outlinesMultiple color themes and styles
📊 Productivity
(343)
subscription
20
WPS Office-AI Doc, PDF, Sheet
WPS Office-AI Doc, PDF, Sheet
WPS Office-AI Doc, PDF, Sheet
Office Suite with PDF Editor
Free

This AI-powered office suite transforms your device into a smart workspace. Generate presentations from prompts, digitize notes, and analyze documents with an intelligent assistant. Seamlessly sync across devices for efficient workflow.

AI-powered document analysis and summarizationInstant presentation creation from promptsOCR for digitizing notes and business cards
📊 Productivity
(18K)
subscription

FAQ about Diagram Expert

What are the best diagram expert apps for iPhone?
DWG FastView-CAD Viewer&Editor tops our diagram expert apps ranking as of May 2026, with a 4.4-star average from 1K App Store ratings, and it's free to download.
Yes — 19 of the top diagram expert apps we rank are free to download, including DWG FastView-CAD Viewer&Editor and EdrawMax - AI Diagram Maker.
DWG FastView-CAD Viewer&Editor shows ads and offers in-app purchases, according to its App Store listing as of May 2026.
We track 216+ diagram expert apps on the iOS App Store as of May 2026, ranked by rating, recency, and analysis of real user reviews.
DWG FastView allows you to view, edit, and create 2D and 3D CAD drawings. You can perform actions like moving, copying, rotating, scaling, measuring, and annotating objects. It also supports exporting drawings to various image formats and PDF.
The app is fully compatible with AutoCAD formats like DWG and DXF. It also supports browsing over 40 formats of 3D drawings, including BIM, Revit, Solidworks, NX, CATIA, Inventor, and more.