Best Diagramas Apps

249+ iOS apps curated and reviewed

3.7 avg rating
20 free apps
Updated September 2026

Carmin is the household name in diagramas, but it's far from the only option. We track 249+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Diagramas Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1CarminCarminFree4.3★ (223)YesYesSep 2026
2Autowire - Car Wiring DiagramsAutowire - Car Wiring DiagramsFree5.0★ (2)NoYesSep 2026
3Flowdia DiagramsFlowdia DiagramsFree3.4★ (66)NoYesSep 2026
4Editor for Visio DiagramsEditor for Visio DiagramsFreeNoNoSep 2026
5Seat parts and diagramsSeat parts and diagramsFree2.3★ (3)NoYesAug 2026
6Xm DiagramsXm DiagramsFree3.0★ (1)NoNoJul 2026
7SimurelaySimurelayFree3.9★ (17)NoYesAug 2026
8LucidchartLucidchartFree4.6★ (5.3K)YesNoAug 2026

Top Picks for Diagramas

Carmin#1

Carmin by Chuan Nguyen Van

Automotive Wiring Diagrams
Editor's Choice
🔍 Reference
4.3😐(223 ratings)
FreeAdsIn-App Purchases
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Access a comprehensive library of regularly updated automotive electrical wiring diagrams for car repair and study. Includes videos and technical documents for research and reference.

What We Love

  • 📚 Comprehensive vehicle diagram database
  • 💰 Free version available with good content
  • 🎯 Helpful for car diagnostics and repairs
  • ⚡ Quick access to wiring information
  • 🌍 Supports multiple vehicle brands and models
  • 👍 User-friendly interface and organization
  • 💡 Valuable tool for mechanics and DIY enthusiasts

Room to Improve

  • 📺 Excessive advertisements in free version
  • 🐛 Frequent app crashes and instability on iOS
  • 🚫 Limited vehicle coverage (missing years and models)
  • 🔤 Diagrams display as code/symbols instead of images
  • 🌐 Language limitations (primarily English)
  • 🔍 Poor search and navigation functionality
  • ⚠️ Malicious/deceptive ads with fake close buttons
  • 📱 Right-hand drive vehicles not supported
  • 🔧 Missing diesel truck variants
  • ⏱️ Slow loading and performance issues
Flowdia Diagrams#3

Flowdia Diagrams by Behzad Gorimar

Flowchart & Diagramming
Worth Considering
📊 Productivity
3.4(66 ratings)
FreeIn-App Purchases
Flowdia Diagrams screenshot 1
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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.

More Diagramas apps to explore

FAQ about Diagramas

What are the best diagramas apps for iPhone?
Carmin tops our diagramas apps ranking as of September 2026, with a 4.3-star average from 223 App Store ratings, and it's free to download.
Yes — 20 of the top diagramas apps we rank are free to download, including Carmin and Autowire - Car Wiring Diagrams.
Carmin shows ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 249+ diagramas apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
This app provides a regularly updated library of automotive electrical wiring diagrams. It's designed to be used as a reference for car repairs or for educational purposes, offering access to videos and technical documents.
Key features include access to trustful electrical wiring diagrams that are updated regularly. It also offers a library of videos and technical documents for research and reference, all accessible with a few clicks.

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