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&EditorFree4.5★ (1.1K)YesYesSep 2026
2EdrawMax - AI Diagram MakerEdrawMax - AI Diagram MakerFree3.4★ (33)NoYesSep 2026
3DrawExpress Diagram LiteDrawExpress Diagram LiteFree3.7★ (25)NoNoSep 2026
4LucidchartLucidchartFree4.6★ (5.3K)YesNoAug 2026
5Arduino Pocket ReferenceArduino Pocket ReferenceFree2.4★ (17)YesYesMay 2026
6Infographic MakerInfographic MakerFree4.5★ (21)YesYesSep 2026
7miMind - Mind Map, BrainstormmiMind - Mind Map, BrainstormFree4.8★ (359)NoYesAug 2026
8Visme - Presentation & ChartsVisme - Presentation & ChartsFree4.6★ (1.1K)NoYesSep 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
4.5😐(1.1K 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
  • 👍 Smooth performance
  • 👍 Accurate measurements and annotations
  • 💡 Useful PDF export feature

Room to Improve

  • 🐛 Crashes and freezes
  • 💰 Subscription model with limited free features
  • 🔒 Lack of customer support and communication
  • 🔒 Unclear upgrade and purchase process
  • 🔒 Aggressive advertising and paywalls
  • 🔒 Unreliable file compatibility and opening
EdrawMax - AI Diagram Maker#2

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

Drawing Struct, Org, Flowchart
Strong Contender
📊 Productivity
3.4😐(33 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.

What We Love

  • 👍 Easy to use and intuitive
  • 🚀 Fast and smooth performance
  • 💡 Helpful templates for quick start
  • 🤝 Great collaboration features
  • 🎨 Easy to customize diagrams
  • 📄 Useful export options
  • 📈 Good for visualizing projects
  • ✨ Creates professional-looking diagrams
  • 🎛️ Offers good control over design
  • ✅ Supports various diagram types
  • ⏱️ Saves drawing time and improves efficiency
  • 🗂️ Ability to organize multiple diagrams
  • 📐 Precise spacing and alignment

Room to Improve

  • ❌ Not suitable for iPad
  • 🐛 Generation failed errors
  • 💳 Difficult to cancel auto-renewal
  • 💸 No refunds for unwanted charges
  • 📱 Mobile app is unusable
  • ⚠️ Invasive ads
  • 🧩 Requires downloading another app
  • 👎 Premium packages not as advertised
  • 🖱️ Pop-up menus obstruct editing
  • 🚫 Lack of user customization settings
  • 🖥️ Desktop version is good, mobile is bad
  • 💸 Lifetime license not cross-platform

More Diagram Expert apps to explore

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 4.5-star average from 1.1K 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.