OpenEMF for Android
Turn your phone into an EMF meter. Measure WiFi, Bluetooth, and cellular radiation in your environment. Know what you're exposed to.
Good
E-Score
Comprehensive EMF Measurement
OpenEMF uses your phone's built-in sensors to measure electromagnetic fields from common sources in your environment.
WiFi Scanning
Detect all nearby WiFi networks, their signal strengths, and frequencies (2.4/5/6 GHz)
Bluetooth Detection
Find Bluetooth and BLE devices including AirTags, smartwatches, and headphones
Cellular Analysis
Measure cell tower signals including 2G, 3G, 4G LTE, and 5G NR
E-Score Rating
Get a 0-100 score representing your total EMF exposure relative to safety standards
Why Measure Your EMF Exposure?
You can't manage what you can't measure. Understanding your electromagnetic environment is the first step to making informed decisions about your health and technology use.
- Know your environment before choosing a home or office
- Track exposure changes over time
- Identify the biggest contributors to your EMF exposure
- Compare your readings to international safety standards
- Contribute anonymized data to help global EMF mapping
The E-Score System
Our E-Score provides a simple 0-100 rating of your total RF exposure, making it easy to understand your environment at a glance.
Download OpenEMF
Available for Android devices running Android 9.0 (Pie) or higher.
Build From Source
Clone the repo and build it yourself. Full transparency.
View on GitHubBSD 3-Clause License
System Requirements
Minimum
- • Android 9.0 (Pie) or higher
- • WiFi-enabled device
- • Location permission
Recommended
- • Android 12+ for best Bluetooth support
- • Device with cellular modem
- • 5G capable for full cellular scanning
Permissions Needed
- • Location (for WiFi/cell scanning)
- • Bluetooth scan & connect
- • Nearby WiFi devices (Android 13+)
Ready to Know Your Environment?
Download OpenEMF today and start measuring your electromagnetic exposure. It's free, open source, and respects your privacy.