Best Diagramas Apps

249+ iOS apps curated and reviewed

3.5 avg rating
19 free apps
Updated October 2026

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

Compare top Diagramas Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1CarminCarminFree4.3β˜… (234)YesYesOct 2026
2Seat parts and diagramsSeat parts and diagramsFree2.3β˜… (3)NoYesOct 2026
3Autowire - Car Wiring DiagramsAutowire - Car Wiring DiagramsFree4.3β˜… (3)NoYesOct 2026
4Flowdia DiagramsFlowdia DiagramsFree3.4β˜… (66)NoYesOct 2026
5Xm DiagramsXm DiagramsFree3.0β˜… (1)NoNoJul 2026
6Diagram Explainer: AI HelperDiagram Explainer: AI HelperFreeβ€”YesYesOct 2026
7SimurelaySimurelayFree3.9β˜… (18)NoYesOct 2026
8Apollon - UML Modeling EditorApollon - UML Modeling EditorFree3.0β˜… (2)NoNoOct 2026

Top Picks for Diagramas

Carmin#1

Carmin by Chuan Nguyen Van

Automotive Wiring Diagrams
Editor's Choice
πŸ” Reference
4.3😐(234 ratings)
FreeAdsIn-App Purchases
Carmin screenshot 1
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Carmin screenshot 6

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

  • πŸ“š Comprehensive vehicle diagram database
  • πŸ’° Free version available with good content
  • 🎯 Helpful for car diagnostics and repairs
  • ⚑ Quick access to wiring information
  • 🌍 Supports multiple vehicle brands and models
  • πŸ‘ User-friendly interface and organization
  • πŸ’‘ Valuable tool for mechanics and DIY enthusiasts

Room to Improve

  • πŸ“Ί Excessive advertisements in free version
  • πŸ› Frequent app crashes and instability on iOS
  • 🚫 Limited vehicle coverage (missing years and models)
  • πŸ”€ Diagrams display as code/symbols instead of images
  • 🌐 Language limitations (primarily English)
  • πŸ” Poor search and navigation functionality
  • ⚠️ Malicious/deceptive ads with fake close buttons
  • πŸ“± Right-hand drive vehicles not supported
  • πŸ”§ Missing diesel truck variants
  • ⏱️ Slow loading and performance issues
Autowire - Car Wiring Diagrams#3

Autowire - Car Wiring Diagrams by Mohammad Wahyudi

Wiring Diagrams & Car Repair
Worth Considering
πŸ”§ Utilities
4.3(3 ratings)
FreeIn-App Purchases
Autowire - Car Wiring Diagrams screenshot 1
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Autowire - Car Wiring Diagrams screenshot 6

Access comprehensive car wiring diagrams, fuse box layouts, and torque specifications for hundreds of car models. This app also offers a smart diagnostic tool to help identify car problems and a garage feature to track your vehicle's maintenance history.

More Diagramas apps to explore

FAQ about Diagramas

What are the best diagramas apps for iPhone?
Carmin tops our diagramas apps ranking as of October 2026, with a 4.3-star average from 234 App Store ratings, and it's free to download.
Yes β€” 19 of the top diagramas apps we rank are free to download, including Carmin and Seat parts and diagrams.
Carmin shows ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 249+ diagramas apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.

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