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.

Download For Free See Everything

No subscription required
No locked core features
Designed for real adapter behavior

Feature Stack

Built for diagnostics that actually help you make decisions.

Misfire Delta Tracking

Track cylinder-level changes and detect counter resets with event-focused monitoring logic.

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.

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.

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