CrankData
Live OBD codes & engine vitals
Free · Designed for iPad. Not verified for macOS.
Connect a Bluetooth OBD-II scanner. Read plain-English codes, live RPM & coolant, readiness for emissions, and clear faults — built for real drives.
CrankData turns a Bluetooth OBD-II adapter into clear answers about your car — live vitals, plain-English fault codes, and tools that help you fix issues and pass emissions.
CONNECT & GO LIVE
Pair a compatible ELM327-style Bluetooth scanner (including DA100-class adapters). CrankData streams RPM, speed, coolant, battery voltage, load, fuel trims, and more while you drive.
CODES IN PLAIN ENGLISH
Read stored, pending, and permanent codes with titles you can actually understand — not just a P-code. See common causes, capture freeze-frame conditions, and Quick Reset (Mode 04) when you’re ready to clear and retest.
READINESS & EMISSIONS
See which monitors are ready, how far you’ve driven since a clear, and coaching tips for drive-cycle monitors like EVAP — so you’re not guessing before an inspection.
DRIVE & GAUGES
Use the Drive tab for trip logging, or flip to a full landscape gauge cluster with tach, speedo, and check-engine status. Customize gauge colors in Settings.
GARAGE FOR YOUR CARS
Save vehicles, pick a preferred car, and keep history tied to the right truck or daily driver.
CRANKDATA PRO (OPTIONAL)
Unlock Mode 06 early warnings, emissions coaching, battery health trends, smart alerts, Home Screen & Lock Screen widgets, CarPlay, freeze-frame history, repair cost ranges, service reminders, Siri shortcuts, and more.
FREE INCLUDES
• Live engine vitals
• Code reading & plain-English decode
• Quick Reset
• One garage vehicle
• Readiness glance
WHAT YOU NEED
• iPhone with Bluetooth
• Compatible wireless OBD-II adapter
• Ignition ON (engine can be running or off, depending on the car)
CrankData is a diagnostic companion — it doesn’t replace a professional shop scan tool for every manufacturer-specific test. Always drive safely; don’t interact with the phone while the vehicle is moving.
Questions or adapter tips? We’re building CrankData for real cars and real owners.
License Agreement:
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Cameron Howard, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Cameron Howard
- Size
- 9.4 MB
- Category
- Reference
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Cameron Howard