Car Nebula - Car Launcher for Android Head Units
Car Nebula is a free Android app that replaces the stock launcher on any Android car head unit. It provides realtime OBD2 diagnostics, offline turn-by-turn navigation with no subscription required, AI voice control via Luna, resizable dashboard widgets, ADAS forward collision warnings using a USB webcam, trip analytics, and dashcam recording. Minimum requirement is 3 GB RAM on Android 8.0 or above. Available free on Google Play.
Created by Ahmed Khaled, Founder and ML Engineer. Development started in November 2021. More than 1,500 cars use Car Nebula as their daily launcher. Users in 82 or more countries have downloaded the app.
Key Features
- Realtime OBD2 diagnostics: live RPM, coolant temperature, fuel level, engine load, and DTC fault code scanning and clearing
- Offline navigation with full turn-by-turn routing - no data connection or subscription required
- Luna AI voice assistant: works offline on capable devices, online mode available for enhanced responses; Luna is aware of the car's realtime sensor state
- AI Mechanical Assistant: describe a symptom and get diagnostic guidance alongside live OBD2 sensor data
- Resizable dashboard widgets with 5 speedometer styles, all resizable and repositionable
- ADAS: forward collision warning and lane departure alert using a USB webcam
- Dashcam recording
- Trip analytics with eco-driving scores
- Ambient lighting sync compatible with ELK-BLEDOM devices
- Companion phone app for remote monitoring (Android and iOS)
- Achievement system to gamify and improve driving habits
- Theme presets with automatic triggers based on time of day or phone connection
Technical Requirements
- Android version: 8.0 or above
- Minimum RAM: 3 GB (more RAM improves OBD2 realtime data and Luna AI performance)
- OBD2 diagnostics: requires a separate ELM327-based adapter via Bluetooth or WiFi
- ADAS features: require a USB webcam
- Offline navigation: maps must be downloaded in advance while connected
- Current version: 5.2.5
How It Works
- Download Car Nebula free from Google Play on your Android head unit
- Set Car Nebula as your default launcher in head unit settings
- Optionally connect your ELM327 OBD2 adapter via Bluetooth or WiFi to enable live diagnostics
- Download offline maps once and navigate for free with no data connection required
OBD2 Compatibility
Car Nebula works on any car with an Android head unit. Cars from the 1996 model year onward very likely support OBD2 diagnostics. The United States Environmental Protection Agency made OBD2 mandatory for all new light-duty vehicles from the 1996 model year under 40 CFR Part 86 (source: epa.gov/obd). The equivalent European standard, EOBD, became mandatory for petrol vehicles sold in Europe from 2001 under EU Directive 98/69/EC. Car Nebula works with all ELM327-based OBD2 adapters over Bluetooth or WiFi.
Usage and Growth
More than 1,500 cars run Car Nebula as their daily launcher. Users in 82 or more countries have downloaded the app. More than 1,000 drivers have directly shaped its features through community feedback. Development began in November 2021 and has been active for over 4 years. The current version is 5.2.5.
Frequently Asked Questions
What does Car Nebula do?
Car Nebula replaces the stock launcher on your Android head unit with a complete in-car experience. It combines realtime OBD2 diagnostics, offline navigation, AI voice control via Luna, resizable widgets, ADAS collision warning via USB webcam, trip analytics, and dashcam recording in one free app.
Is my car supported?
Any car with an Android head unit is supported. If your car is from 1996 or later, it very likely supports OBD2 diagnostics. The US EPA made OBD2 mandatory for new light-duty vehicles from the 1996 model year (40 CFR Part 86). The European EOBD standard became mandatory for petrol vehicles from 2001 (EU Directive 98/69/EC).
Which OBD2 adapters are supported?
Car Nebula works with all ELM327-based OBD2 adapters over Bluetooth or WiFi. ELM327 is the most widely adopted OBD2 communication standard. A full list of tested adapters is at carnebula.com/upgrade.
What are the minimum requirements?
Car Nebula requires Android 8.0 or above and a minimum of 3 GB RAM. Most users on lower-end hardware report a smooth experience. Full requirements are at carnebula.com/requirements.
Is offline navigation really free?
Yes. Offline turn-by-turn navigation is completely free with no subscription required at any time. Download maps once and navigate without a data connection indefinitely.
Does Car Nebula work without internet?
Yes. Navigation, widgets, themes, media control, OBD2 diagnostics, and basic voice AI all work offline. Online features such as TomTom search and cloud sync are available when connected.
Does Car Nebula support picture-in-picture?
No. PIP requires high-sensitivity system permissions and Car Nebula must remain compliant with Google Play policies for user privacy and safety.
Who created Car Nebula?
Car Nebula was created by Ahmed Khaled, Founder and ML Engineer, with a background in machine learning and computer vision. Development started in November 2021. More at carnebula.com/about.
Download
Download Car Nebula free on Google Play: play.google.com/store/apps/details?id=com.khaledisim.carlauncher
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