Check Engine Chat vs EngineScan AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Check Engine Chat
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Your AI mechanic, running entirely on your phone. Ask any car question and get instant, accurate answers grounded in a curated automotive database covering 400+ vehicle models from 1976 to 2025. Oil specs, torque values, tire pressure, transmission fluid, spark plug gaps, DIY repair guides with tool lists and difficulty ratings, and symptom-based diagnostic troubleshooting. AUDIO DIAGNOSTICS (Pro) Record your engine sound. The AI analyzes the audio and identifies the problem such as knock, turbo failure, belt squeal, timing chain wear, transmission whine, VTEC rattle, and more. All processed on-device in seconds. PRIVACY FIRST Everything runs on your iPhone. No cloud servers. No accounts. No analytics. No tracking. Works in airplane mode. Your car problems are yours. FEATURES - Vehicle spec lookup (oil, torque, tire pressure, fluids) - DIY repair guides with tool lists and difficulty ratings - Symptom based diagnostic reasoning - Audio engine sound diagnosis - Aftermarket and mod guidance - Conversation history + Generate Report - Works fully offline after setup Requires iPhone with at least 6gb ram. Built by car enthusiasts.
EngineScan AI
Analyze your vehicle's engine health by recording its sound. This AI-powered tool provides a basic diagnosis and can unlock deeper repair insights with an optional premium report. It also helps manage vehicle maintenance and find service locations.
- AI engine sound analysis
- Basic diagnosis with rewarded ads
- Unlockable Premium Report
- Scan history
- Vehicle maintenance reminders
- Find nearby service locations
- Shareable PDF reports
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EngineScan AI helps you understand your vehicle's engine condition by analyzing a short engine sound recording. Start the engine, record a clean sample at idle, and let AI evaluate acoustic patterns that may indicate normal operation or possible fault signals. The app gives you a practical first look before you decide what to check next. What you can do: - Analyze engine sound with AI. - Watch a rewarded ad to view the basic Level 1 diagnosis result. - Unlock the optional Premium Report for deeper repair intelligence. - Revisit previous scans from scan history. - Save vehicles and set reminders for maintenance, insurance, inspection, and vehicle tax. - Find nearby service locations and share reports. Premium Report includes: - Likely root-cause scenarios and risk notes. - TSB / recall check clues. - Fair parts + labor price guidance. - Mechanic-ready questions and anti-overpay script. - Acoustic profile and sound signature view. - PDF report sharing. EngineScan AI is designed as an informational assistant. It does not replace a professional inspection, service diagnosis, or safety decision. Always consult a qualified mechanic or authorized service before repairs, part replacement, or continued driving when a fault may be present. This app contains ads and offers an optional one-time in-app purchase for the Premium Report.
Screenshots
Verdict
The clearest difference is ads: Check Engine Chat at none against EngineScan AI's shown. EngineScan AI's advantage is iOS requirement (15.0 vs 26.2). On price, update cadence, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Check Engine Chat sells 1 one-off in-app purchase and EngineScan AI sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Check Engine Chat ships an update fortnightly, EngineScan AI every 3 weeks. The most recent releases landed on September 10, 2026 and August 31, 2026 respectively.
| Parameter | Check Engine Chat | EngineScan AI |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Fortnightly — better | Every 3 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.2 | 15.0 — better |
| Further details — not scored | ||
| Size | 2.7 GB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Yao Vah Saechao | Fuat yahsi |
In-app purchases
Check Engine Chat
- Audio Diagnostics Pro$4.99
EngineScan AI
- Premium Report$2.99





