Best Engine Monitoring Apps

228+ iOS apps curated and reviewed

4.3 avg rating
19 free apps
Updated June 2026

The best engine monitoring apps on iPhone average 4.3★ across 228+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.

Top Picks for Engine Monitoring

BlueMAX Aircraft Monitor#1

BlueMAX Aircraft Monitor by FlightData Solutions LLC

Aircraft Engine Data Display
Editor's Choice
🔧 Utilities
4.4(5 ratings)
Free
BlueMAX Aircraft Monitor screenshot 1
BlueMAX Aircraft Monitor screenshot 2
BlueMAX Aircraft Monitor screenshot 3

Stream real-time aircraft and engine data to your mobile device, supplementing onboard instrumentation. Log and analyze flight data, monitor fuel levels, and receive critical parameter alarms. Requires a BlueMAX hardware adapter.

OBD2 Car Scanner - EOBD Facile#2

OBD2 Car Scanner - EOBD Facile by Outils OBD Facile

Torque ELM327 Diagnostic Tool
Strong Contender
🔧 Utilities
4.6😐(4.9K ratings)
FreeIn-App Purchases
OBD2 Car Scanner - EOBD Facile screenshot 1
OBD2 Car Scanner - EOBD Facile screenshot 2
OBD2 Car Scanner - EOBD Facile screenshot 3
OBD2 Car Scanner - EOBD Facile screenshot 4
OBD2 Car Scanner - EOBD Facile screenshot 5
OBD2 Car Scanner - EOBD Facile screenshot 6

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.

What We Love

  • 👍 Helpful for diagnosing issues
  • 🚀 Easy to use and connect
  • 💡 Provides useful vehicle data
  • 🔍 Able to read and clear error codes

Room to Improve

  • 💰 Expensive for full functionality
  • 🔒 Requires paid upgrade to access key features
  • 🐛 Connectivity issues and app crashes
Engine Link - OBD II diagnosis#3

Engine Link - OBD II diagnosis by K SOLUTION LLC

Vehicle monitoring & diagnosis
Worth Considering
🔧 Utilities
2.8😐(61 ratings)
$5.99
Engine Link - OBD II diagnosis screenshot 1
Engine Link - OBD II diagnosis screenshot 2
Engine Link - OBD II diagnosis screenshot 3
Engine Link - OBD II diagnosis screenshot 4
Engine Link - OBD II diagnosis screenshot 5

Transform your iPhone into a powerful vehicle diagnostics tool. Monitor real-time performance, read and clear fault codes, and customize your dashboard with detailed sensor data. Supports emission testing and offers a HUD mode for night driving.

What We Love

  • 🚀 Works as expected
  • 👍 Flexible and customizable
  • 💡 Supports custom PIDs
  • 🚀 Reliable connection

Room to Improve

  • 🐛 Doesn't work with all OBD dongles
  • 🐛 Compatibility issues with newer iOS versions
  • 👎 Outdated and clunky interface

More Engine Monitoring apps to explore

4
OBDLink
OBDLink
OBDLink
by OBD Solutions LLC
Free

Transform your phone into a powerful car diagnostic tool. Read and clear trouble codes, monitor real-time engine data, and track fuel economy. Generate detailed reports for easy sharing and analysis.

Read and clear diagnostic trouble codesDisplay real-time vehicle dataCustomizable dashboards
✈️ Travel
(12K)
free with in-app purchases
5
BlueDriver OBD2 Scan Tool
BlueDriver OBD2 Scan Tool
BlueDriver OBD2 Scan Tool
Fear No Fix™
Free

This app turns your smartphone into a powerful OBD2 scan tool. It allows you to read and clear trouble codes, view live data, and generate detailed repair reports for your vehicle. Understand your car's issues and make informed repair decisions.

Read and clear trouble codes (Check Engine, ABS, etc.)Generate professional-grade Repair ReportsAccess Mode 6 and smog readiness data
📊 Productivity
(14K)
free with in-app purchases
6
OBDeleven – OBD2 car scanner
OBDeleven – OBD2 car scanner
OBDeleven – OBD2 car scanner
Diagnostics, service & coding
Free

Transform your smartphone into a powerful car diagnostic and customization tool. Easily scan trouble codes, monitor live data, and access advanced features like coding and service functions for a wide range of car brands. Save time and money on car maintenance and personalization.

Basic OBD2 diagnosticsLive data monitoringAdvanced diagnostics for licensed brands
🔧 Utilities
(1.1K)
free with in-app purchases
7
Nee-Vo
Nee-Vo
Nee-Vo
by Reseau sans fil Otodata Inc
Free

Instantly view real-time tank levels on your smartphone, eliminating guesswork. Track usage history, receive low-level alerts, and easily request refills from your fuel supplier. Manage multiple tanks and share access with others.

Real-time tank level trackingUsage history consultationConfigurable low-level notifications
🔧 Utilities
(7.3K)
free
8
BimmerLink
BimmerLink
BimmerLink
by SG Software GmbH & Co. KG
Free
$39.99 | 100% OFF

This app provides direct access to your BMW or MINI vehicle's systems. Read and clear trouble codes from all control units, monitor real-time sensor values, and control features like exhaust flaps and active sound design. It also supports battery registration, DPF regeneration, and service resets.

Read and clear trouble codes from all control unitsDisplay real-time sensor valuesRemote control of exhaust flap
📊 Productivity
(7.6K)
free with in-app purchases
9
FIXD OBD2 Scanner
FIXD OBD2 Scanner
FIXD OBD2 Scanner
Clear Your Check Engine Light
Free

This app translates your car's diagnostic trouble codes into plain language, helping you understand potential issues and their severity. It provides maintenance reminders and offers advanced features like issue forecasting and emissions pre-checks with a premium subscription.

Translate check engine light codesUnderstand issue severityMaintenance reminders
🔧 Utilities
(26K)
free with in-app purchases
10
M-LINK Connect
M-LINK Connect
M-LINK Connect
Fleet Management monitoring.
Free

This application provides real-time fleet management information for industrial engine fleets. It helps reduce ownership costs by offering comprehensive monitoring capabilities from anywhere, at any time.

Real-time management informationFleet monitoringCost reduction
💼 Business
(8)
free
11
Torque Pro : OBD2 Car Scanner
Torque Pro : OBD2 Car Scanner
Torque Pro : OBD2 Car Scanner
Torque OBD2 Car Scanner ELM
Free
$12.99 | 100% OFF

Transform your phone into a powerful car diagnostic tool. Read and clear trouble codes, monitor live sensor data, and analyze performance with real-time graphs. Get AI-powered insights and detailed vehicle history reports.

Read and clear trouble codes (DTCs)Live sensor data monitoring and loggingAI-powered trouble code explanations
🔧 Utilities
(393)
subscription
12
Ron StageMaster Monitoring
Ron StageMaster Monitoring
Ron StageMaster Monitoring
by Eilon Engineering
Free

This system provides wireless, multi-point load monitoring and overload prevention for stages and venues. It uses load cells to measure loads and transmit data to a portable receiver, which then sends it to an iPhone or iPad for real-time display.

Wireless multi-point load monitoringOverload preventionReal-time load map display
🔧 Utilities
(3)
free
13
SBMonitor
SBMonitor
SBMonitor
AdacsMobile
Free

Connect to your surveillance system to monitor multiple devices remotely. View live audio and video feeds, track device locations on a map, and configure combined media streams for comprehensive oversight.

Monitor live videoMonitor live audioTrack device location on map
💼 Business
(3)
free
14
Holman Insights
Holman Insights
Holman Insights
by ARI - Automotive Resources International
Free

Manage your fleet and vehicle needs on the go. Access fleet activity, approve actions, and monitor vehicle details like mileage and fuel. Request services and report usage from your mobile device.

AI-powered Fleet Activity feedMobile Dashboard experienceAction item approvals (PO, stock, PriceNet)
💼 Business
(28K)
free
15
ManageEngine Ping Tool
ManageEngine Ping Tool
ManageEngine Ping Tool
Smart Set of Network Tools
Free

Monitor network devices and websites from your mobile device. Track server availability, performance, and network diagnostics like ping, traceroute, and DNS lookup. Generate PDF reports for detailed analysis.

Network device availability monitoring (Ping)Website availability and performance trackingTraceroute for websites and servers
💼 Business
(674)
free
16
123\Tune+
123\Tune+
123\Tune+
by Albertronic B.V.
Free

Control your classic car's ignition wirelessly via Bluetooth. Adjust advance and vacuum curves, monitor real-time engine data, and utilize features like a PIN-code immobilizer and rev limiter. Compatible with a wide range of classic vehicles.

Wireless ignition curve adjustmentReal-time engine data monitoringPIN-code immobilizer
🔧 Utilities
(232)
free
17
Engine Link LE
Engine Link LE
Engine Link LE
by K SOLUTION LLC
Free

Transform your iPhone into a vehicle diagnostics tool. Monitor real-time performance, read and clear fault codes, and customize gauges to display the data you need. Requires a LELink adapter for OBD2 connection.

Real-time vehicle data displayRead and clear OBD fault codesCustomizable gauges and dashboard
⚽ Sports
(12)
free
18
Car Play Connect: Remote Sync
Car Play Connect: Remote Sync
Car Play Connect: Remote Sync
Digital Mobile Driving
Free

Monitor your vehicle's vital information, track performance stats, and locate essential services like gas stations and EV chargers. This app enhances your driving experience by keeping key data accessible and providing navigation assistance.

Vehicle information dashboardPerformance stats trackingFuel and battery level monitoring
🔧 Utilities
(19K)
subscription
19
OBD2 Scanner: Torque ELM 327
OBD2 Scanner: Torque ELM 327
OBD2 Scanner: Torque ELM 327
Torque OBD2 Car Scanner ELM327
Free

Transform your smartphone into a powerful car diagnostic tool. Monitor real-time engine data, read and clear trouble codes, and track your vehicle's performance. Customize your dashboard and access repair manuals to understand and fix issues.

Real-time engine data monitoringRead and clear trouble codesPerformance tracking
🔧 Utilities
(802)
free with in-app purchases
20
Infocar - OBD2 ELM Scanner
Infocar - OBD2 ELM Scanner
Infocar - OBD2 ELM Scanner
OBD2 Car Scanner & Diagnostic
Free

Monitor your vehicle's health and performance with this app. It offers real-time diagnostics, driving style analysis, and maintenance tracking. Connect to your car's OBD2 scanner for detailed insights and improved driving habits.

Vehicle diagnostics and fault code clearingReal-time sensor data monitoringCustomizable dashboard with HUD
🔧 Utilities
(499)
free with in-app purchases