OBD Compass vs iCarX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OBD Compass
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The Bluetooth OBDII scan tool is loaded with essential features such as full OBDII functionality. Key Features: 1. Vehicle health check, read vehicle faults. 2. Various visual data such as numerical values, waveforms, and dials. 3. n-depth analysis of fault codes, including causes of generation, potential impacts of fault codes on vehicles, maintenance suggestions, and estimated costs, etc. 4. Maintenance records and reminders. 5. Community and Knowledge Base.
iCarX
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iCarX is an AI-powered vehicle health assistant that brings advanced detection technology to your iPhone. Detect engine issues, paint damage, and tire wear with ease. 【Three Core Detection Features】 Engine Sound Diagnosis Record 10-15 seconds of engine sound using your iPhone's microphone. AI spectrum analysis instantly identifies potential issues: • Engine knocking detection • Belt noise recognition • Bearing wear assessment • Valve tapping diagnosis • Cylinder misfire identification Paint Damage Detection Capture photos of your vehicle's body, and AI identifies various paint damage: • Scratch detection and depth assessment • Dent recognition with location marking • Paint chip analysis • Paint aging evaluation Tire Tread Analysis Take close-up photos of tire treads for AI-powered depth measurement: • Inner/center/outer tread depth measurement • Wear uniformity analysis • Replacement timing alerts • Safety level assessment 【Key Advantages】 On-Device AI: All processing happens locally, no network required, full privacy Instant Results: Get detection results within seconds History Tracking: Save reports and monitor vehicle health trends Multilingual: Supports English and Simplified Chinese Professional & Reliable: Powered by CoreML and TensorFlow Lite models 【Privacy Protection】 We take your data security seriously: • All photos, recordings, and reports stored locally on your device • No data uploaded to any servers • Delete all data anytime • Compliant with GDPR, CCPA, and COPPA 【Use Cases】 • Routine vehicle self-inspection • Pre-purchase used car evaluation • Pre-trip safety checks • Regular vehicle health monitoring • Preliminary diagnosis before professional service 【System Requirements】 • iOS 16.0 or later • Compatible with iPhone and iPad • Camera and microphone access required 【Disclaimer】 iCarX detection results are for reference only and cannot replace professional mechanic diagnosis. For major faults or safety concerns, please consult professional automotive services. Download iCarX today and let AI be your vehicle health guardian!
Screenshots
Verdict
The clearest difference is price: OBD Compass at Free against iCarX's $169.00. OBD Compass also leads on iOS requirement (13.0 vs 16.0). On ads, 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
OBD Compass is free to download; iCarX costs $169.00 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | OBD Compass | iCarX |
|---|---|---|
| Price | Free — better | $169.00 |
| Update frequency | Monthly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 25 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | HK TOPDON TECHNOLOGY Co., LIMITED | 亮 陈 |
In-app purchases
OBD Compass
No in-app purchases
iCarX
No in-app purchases









