Best Mechanic Diesel Apps

193+ iOS apps curated and reviewed

4.5 avg rating
19 free apps
Updated July 2026

Whether you're new to mechanic diesel or looking for an upgrade, our curated collection of 193+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Mechanic Diesel Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1RPM Diesel ServicesRPM Diesel ServicesFree5.0★ (1)NoNoJul 2026
2MudflapMudflapFree4.7★ (4.4K)NoNoAug 2026
310-4 by WEX10-4 by WEXFree4.8★ (3.8K)NoNoAug 2026
4FuelbookFuelbookFree4.8★ (1.2K)NoNoAug 2026
5ASE T2 Diesel Engine PrepASE T2 Diesel Engine PrepFreeNoYesJun 2026
6Diesel Power Truck RepairDiesel Power Truck RepairFreeNoNoMay 2026
7FuelApp: Diesel discountsFuelApp: Diesel discountsFree3.9★ (19)YesNoAug 2026
8Rig DriverRig DriverFree4.6★ (16)NoNoJul 2026

Top Picks for Mechanic Diesel

RPM Diesel Services#1

RPM Diesel Services by Brandon Gregory Green

Mobile Diesel Mechanic Service
Editor's Choice
💼 Business
5.0(1 ratings)
Free
RPM Diesel Services screenshot 1
RPM Diesel Services screenshot 2
RPM Diesel Services screenshot 3
RPM Diesel Services screenshot 4

This app connects West Texas customers with mobile diesel engine services. Schedule appointments, receive maintenance reminders, access digital service records, and easily look up or order parts.

Mudflap#2

Mudflap by Mudflap Inc

Instant Diesel Discounts
Strong Contender
🗺️ Navigation
4.7😊(4.4K ratings)
Free
#53in Navigation
Mudflap screenshot 1
Mudflap screenshot 2
Mudflap screenshot 3
Mudflap screenshot 4
Mudflap screenshot 5
Mudflap screenshot 6

Save on diesel fuel at over 2,800 truck stops nationwide with instant discounts. Access free, truck-safe GPS navigation that avoids low bridges and weight restrictions. Simply link your card to start saving.

What We Love

  • 💰 Significant fuel savings
  • 🔍 Convenient fuel price comparison
  • ⚡ Easy to use app
  • 🤝 Helpful customer support

Room to Improve

  • ⏳ Lengthy account verification process
  • 💳 Long hold times on payment cards
  • 🚫 Limited participating fuel stations
10-4 by WEX#3

10-4 by WEX by WEX, Inc.

Diesel savings for truckers
Worth Considering
🗺️ Navigation
4.8(3.8K ratings)
Free
10-4 by WEX screenshot 1
10-4 by WEX screenshot 2
10-4 by WEX screenshot 3
10-4 by WEX screenshot 4
10-4 by WEX screenshot 5
10-4 by WEX screenshot 6

This app helps truckers find and pay less for diesel fuel nationwide. It provides a fuel map with discounts at popular truck stops and allows secure payment directly through the app. Users can track their purchases, rewards, and savings.

More Mechanic Diesel apps to explore

4
Fuelbook
Fuelbook
Fuelbook
Truck Stop Diesel Prices
Free

Find nationwide truck stop diesel prices to save money on fuel. Access over 5000 truck stop locations with up-to-date pricing information. A trusted resource for professional drivers since 2010.

Nationwide diesel price searchOver 5000 truck stop locationsSave money on fuel
🗺️ Navigation
(1.2K)
free
5
ASE T2 Diesel Engine Prep
ASE T2 Diesel Engine Prep
ASE T2 Diesel Engine Prep
Heavy Truck Practice Q&A
Free
📚 Education
(0)
6
Diesel Power Truck Repair
Diesel Power Truck Repair
Diesel Power Truck Repair
by SERGEY A DANILCHUK
Free
💼 Business
(0)
7
FuelApp: Diesel discounts
FuelApp: Diesel discounts
FuelApp: Diesel discounts
Save up to $1/gal at the pump
Free

Find discounted diesel fuel at major truck stops nationwide. Securely pay at the pump using fuel codes without needing to go inside. Save money on every gallon with no hidden fees.

Major diesel discountsSave up to $1/gallonSecure at-the-pump payments
🗺️ Navigation
(19)
free
8
Rig Driver
Rig Driver
Rig Driver
Diesel Mechanics, Quick Offers
Free

This app connects diesel vehicle owners with nearby mechanics for road service. Request towing, tires, or maintenance, receive offers within minutes, and track service progress in real-time. Pay easily within the app and consider subscribing for discounts.

Connects drivers with mechanicsReceive mechanic offersReal-time service tracking
💼 Business
(16)
free
9
Mechanic quiz game
Mechanic quiz game
Mechanic quiz game
Test and improve car Knowledge
Free

Test your automotive knowledge with a comprehensive quiz covering mechanical theory, car parts, and engineering principles. Learn about tools, history, and safety with over 300 questions. Ideal for mechanics, students, and car enthusiasts.

Covers automotive systems and engineering principles300+ questionsReal-time answers
📚 Education
(24)
ad-supported
10
Diesel Repair Mobile
Diesel Repair Mobile
Diesel Repair Mobile
The Ultimate Truck Repair App
Free

This app provides heavy-duty truck technicians with instant access to a vast database of repair information, fault code lookups, and diagnostic procedures. It offers VIN decoding, wiring diagrams, and parts cross-referencing to streamline repairs. The platform is accessible on mobile devices and computers, syncing data across all your tools.

VIN DecoderFault Code LookupWiring Diagrams
🔍 Reference
(3)
freemium
11
Diesel Decoder
Diesel Decoder
Diesel Decoder
by Diesel Laptops LLC
Free

This tool connects via Bluetooth to heavy commercial vehicles to read and clear diagnostic trouble codes. It displays live data, allows bi-directional commands, and generates shareable reports through a cloud platform. Requires dedicated hardware for operation.

Read/clear Diagnostic Trouble Codes (DTCs)View live data parametersRun bi-directional commands
🔍 Reference
(30)
free with in-app purchases
12
Diesel World
Diesel World
Diesel World
by Engaged Media Inc.
Free

Explore the world of diesel engines, from cars to trucks and motorsports. Get the latest news, in-depth reviews, and tech articles from seasoned automotive journalists. Fuel your passion for all things diesel with this comprehensive digital magazine.

Complete diesel-powered market coverageDiesel engine and trucking newsLatest diesel-powered car reviews
🌟 Lifestyle
(46)
free with in-app purchases
13
Ag Diesel Solutions
Ag Diesel Solutions
Ag Diesel Solutions
Ag Diesel Solutions
Free

Easily identify the correct diesel engine module for your tractor, truck, or construction equipment. Avoid manual catalog searches by simply selecting your application within the app.

Identify tractor modulesIdentify truck modulesIdentify construction equipment modules
🔧 Utilities
(1)
free
14
Stainless Diesel
Stainless Diesel
Stainless Diesel
by Amy Gilbert
Free

Stay updated with all the latest from a business without needing social media accounts. This app consolidates all their activities in one easy-to-access location.

Centralized updatesNo social media account neededFollow business activities
💼 Business
(1)
free
15
Ultimate Diesel Builders Guide
Ultimate Diesel Builders Guide
Ultimate Diesel Builders Guide
by Engaged Media Inc.
Free

This digital magazine provides expert tips and tricks for building powerful, fuel-efficient diesel trucks. Discover the latest parts and technology to enhance your vehicle's performance and towing capabilities.

Diesel truck building tips and tricksPerformance and fuel economy adviceTowing performance enhancement
🌟 Lifestyle
(7)
free with in-app purchases
16
OBD2 Car Scanner - EOBD Facile
OBD2 Car Scanner - EOBD Facile
OBD2 Car Scanner - EOBD Facile
Torque & ELM327 OBD Diagnostic
Free

Transform your smartphone into a professional car diagnostic tool. Read and clear engine fault codes, monitor real-time sensor data, and perform advanced diagnostics without a mechanic. Supports a wide range of OBD2 compliant vehicles.

Read and clear engine fault codesMonitor real-time sensor dataTurn off check engine light
🔧 Utilities
(5K)
free with in-app purchases
17
WrenchWay
WrenchWay
WrenchWay
Auto, Diesel, & Collision
Free

This app connects automotive, diesel, and collision technicians with job opportunities and industry insights. It features detailed shop profiles, pay comparison tools, a professional community forum, and certification management.

Browse Top ShopsExplore Technician PayParticipate on Shop Talk
💼 Business
(8)
free
18
OBD Fusion
OBD Fusion
OBD Fusion
OBD2 scan tool & diagnostics
$9.99

This app connects to your car's OBD2 port via a compatible adapter to read vehicle data. Monitor fuel economy, clear check engine lights, and create custom dashboards for real-time diagnostics and performance tracking.

Read and clear OBD2 trouble codesCustomizable real-time dashboardsEstimate fuel economy
✈️ Travel
(19K)
free with in-app purchases
19
Rig Mechanic
Rig Mechanic
Rig Mechanic
by Rig Technologies, Inc
Free

This app connects drivers and mechanics for maintenance and repair services. It allows mechanics to respond to service requests, track progress, and handle transactions securely within the application.

Respond to service requestsSend offers for repairsReal-time service tracking
📊 Productivity
(18)
free
20
Car Scanner | OBD Auto Doctor
Car Scanner | OBD Auto Doctor
Car Scanner | OBD Auto Doctor
OBD2 diagnostic for ELM 327
Free

Diagnose your car's engine light issues and monitor real-time performance data. This app allows you to read and clear diagnostic trouble codes, track fuel consumption, and view sensor data. It's a comprehensive tool for understanding your vehicle's health.

Read and clear OBD2 diagnostic trouble codes (DTC)Reset Check Engine LightMonitor real-time vehicle data and sensor readings
🔧 Utilities
(6.1K)
free with in-app purchases

FAQ about Mechanic Diesel

What are the best mechanic diesel apps for iPhone?
RPM Diesel Services tops our mechanic diesel apps ranking as of July 2026, with a 5.0-star average from 1 App Store ratings, and it's free to download.
Yes — 19 of the top mechanic diesel apps we rank are free to download, including RPM Diesel Services and Mudflap.
RPM Diesel Services has no ads and has no in-app purchases, according to its App Store listing as of July 2026.
We track 193+ mechanic diesel apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
RPM Diesel Services provides mobile diesel engine services including routine maintenance, diagnostics, and emergency repairs. The app facilitates scheduling these services directly with certified technicians.
RPM Diesel Services offers customizable maintenance reminders based on your equipment and usage. It also provides access to digital service records, allowing you to track past services and manage documents.