Misfire Delta Tracking
Track cylinder-level changes and detect counter resets with event-focused monitoring logic.
COMPLETELY FREE TO USE
OBD-II Misfire Intelligence
The free app built to catch real misfire behavior, not just generic fault codes.
MissFire gives you focused diagnostics with Mode 06 misfire monitoring, live telemetry, DTC scanning, freeze frame data, and exportable reports in one clean workflow.
- No subscription required
- No locked core features
- Designed for real adapter behavior
Feature Stack
Built for diagnostics that actually help you make decisions.
Live Telemetry Feed
Watch RPM, speed, temperature, and sensor data while troubleshooting in motion.
DTC + Freeze Frame
Scan, inspect, and clear codes with contextual data to understand what happened and when.
Speedometer Calibration
Align OBD-II speed readings with your physical dashboard. Manually calibrate at set speeds for accuracy.
DTC Diagnostic Trouble Code Scanner
Scan, inspect, clear, and understand diagnostic codes. Includes real-time freeze frame data and DTC severity indicators.
Multiple Car Profiles
Switch between vehicles instantly. Save calibrations, tire sizes, and settings per car for quick context switching.
Acceleration Timing
Measure 0-60 times and acceleration performance. Track improvements across tuning or maintenance cycles.
Tire Size Calculator
Verify tire specifications and calculate aspect ratios. Ensure tire wear and inflation monitoring accuracy.
AI Diagnostics Assistant
Diagnose problems with AI-powered analysis. Generate detailed DTC explanations and get repair suggestions instantly.
Clone Adapter Resilience
Dynamic formatting handling improves compatibility with real-world ELM327 clone hardware.
Driving Cycle Reports
Keep cycle history and export logs for workshop notes, customer proof, or deeper analysis.
Privacy Controls
Local-first architecture with built-in Reset / Wipe All Data controls inside the app.
Supported Hardware
Works with ELM327-compatible OBD adapters on both platforms.
Android (Bluetooth)
Connect via Bluetooth RFCOMM to any ELM327-compatible adapter.
- VGate iCar Pro (Recommended)
- VGate iCar 2
- Generic ELM327 clones
- Original ELM327 modules
- Most Bluetooth OBD dongles
Requires Android 12+ with Bluetooth permissions enabled.
iOS (Bluetooth Low Energy)
Connect via BLE to iOS-compatible OBD adapters.
- VGate iCar Pro (Recommended)
- VGate iCar 2 BLE
- Torque Pro compatible adapters
- BLE-enabled OBD devices
- Most modern wireless adapters
Requires iOS 12+ with Bluetooth permissions enabled.
Note: Adapter compatibility depends on ELM327 protocol support and CAN bus compatibility with your vehicle. Some clone adapters need special CAN formatting handling. MissFire applies this handling automatically during diagnostics, so there is no manual CAN formatting switch in settings.
Always Free
MissFire is completely free to use.
Core diagnostics are open to everyone: misfire monitoring, DTC scanner, freeze frame, telemetry, reports, and settings controls. No mandatory subscription wall for essential troubleshooting.
Use Cases
From quick checks to deep troubleshooting sessions.
Connect Adapter
Pair your ELM327-compatible adapter and start reading engine behavior immediately.
Observe Signals
Track Mode 06 counters and live telemetry to isolate intermittent misfire conditions.
Decide Faster
Use DTC + freeze frame context and report exports to support confident repair choices.
Data Ownership
Your diagnostics stay under your control.
- Local-first diagnostic data handling
- No forced account for core app use
- In-app Reset / Wipe All Data control
- Dedicated legal pages for Privacy and Terms
Get MissFire
Download MissFire for free on iOS and Android.
Available now on App Store and Google Play.
Download onApp Store
Get it onGoogle Play
Questions? Contact us