Don't guess at the check-engine light — or get talked into repairs you don't need.
Turn a $15 Bluetooth adapter and your phone into a full diagnostic scanner — read live data, decode the check-engine light, and check recalls.
Works with any ELM327 OBD2 adapter · Android 7+ · No account needed to start
Watch engine parameters in real-time: RPM, speed, coolant temp, fuel pressure, air intake.
Plain-English explanations for every code. Understand what went wrong — then clear it safely.
See which systems are ready for your next smog check, and which still need driving.
Look up your vehicle by VIN and check NHTSA recalls instantly.
Export diagnostic sessions as PDF. Keep a record for your mechanic or your records.
Scan multiple cars. Each has its own diagnostic history and notes.
All data stays on your phone. No cloud, no ads, no tracking.
Try without an adapter. See what live diagnostics feel like.
Plug into your car's OBD2 port (usually under the steering wheel). $15–30 on Amazon.
Turn on the adapter, go to your phone's Bluetooth settings, and connect. Done in seconds.
Open CarScope, tap Scan, and watch your car's live data. Tap any code to see what it means.
Live dashboard
Code explanations
Recall lookup (Pro)
Raw live data
14-day no-questions-asked refund — if your adapter won't connect, we'll refund you.
24-hour full trial
Essentials
Everything, including:
One-time payment
CarScope lets you clear codes, but clearing doesn't fix the underlying problem. We recommend understanding what the code means first (use our code lookup), then deciding with your mechanic. For safety-critical codes, always consult a professional.
CarScope works with any 1996+ car or light truck that has an OBD2 port (usually under the steering wheel). Most gas and diesel vehicles are covered. Some newer hybrid/EV powertrains may have limited support for certain parameters.
We're not on the Play Store yet to keep pricing low and avoid app-store fees. Sideloading from an APK is safe — see the download page for step-by-step instructions.
Yes, if you download from our official domain. Sideloading simply means installing an APK outside the Play Store. We use the same security practices as any published app. Never download APKs from untrusted sources.
For now, yes. We prioritized Android first because Bluetooth OBD2 adapters work seamlessly on Android. iOS support is on our roadmap but requires workarounds due to Apple's Bluetooth restrictions.
To read real car data, yes — a cheap ELM327 Bluetooth adapter ($15–30). CarScope has a demo mode so you can try the interface and see what live diagnostics feel like without an adapter.
Yes. Cancel anytime via your Account settings in CarScope. You'll keep access until your renewal date.
Not for reading live data or codes — that all works offline. VIN lookup and recall checking (Pro only) require internet. All diagnostic data stays on your phone.
