RTL-SDR 433

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About this app

RTL-SDR 433 — Decode Wireless Sensors in Real Time

Turn your Android device into a powerful 433 MHz receiver using an RTL-SDR USB dongle.
Decode and monitor wireless sensor data live — fully offline and directly on your device.

📡 Real-Time 433 MHz Decoding
Supports weather stations, doorbells, PIR sensors, power meters, and more
Built on the proven rtl_433 decoding engine
250+ supported device protocols

⚡ Works Fully Offline
No cloud required
No internet connection needed
All decoding happens locally on your device

📊 Live Monitoring & History
Live sensor list with latest readings
Full history view of all received signals
Automatic updates in real time

⚙️ Advanced Configuration
Adjustable frequency (default: 433.92 MHz)
Tuner gain control
PPM frequency correction
Sample rate selection
Unit system (SI / Customary)

🔌 Easy USB Setup
Works with RTL-SDR USB dongles (RTL2832U-based)
Uses Android USB OTG (no root required)
Quick start: plug in, grant permission, start decoding

💎 Premium Upgrade
Free version: session reading limit (100 → 80 → 60 → 40 → 20 per session, decreasing)
One-time purchase unlocks unlimited usage
Restore purchases anytime via settings

📱 Requirements
Android 10 or higher
USB OTG support
Compatible RTL-SDR dongle

🔒 Privacy First
No tracking
No cloud services

📄 Additional Information
Built with modern Android (Jetpack Compose & Material 3)

Ratings and reviews

amazing work i wish there was a way to graph the same sensors

does tpms in USA 315mhz via android phone

What’s new

Questions, problems, suggestions or need help?
📧 [[e-mail]](mailto:[e-mail])
Your feedback helps improve the app.

v1.3.2 — Choose your own light or dark theme

NEW
• Settings → Sensor Display now has a Theme option: Follow system,
Light, or Dark. Pick Dark to keep the app dark even when your phone
is set to light mode (or the other way round). The change applies
right away and is remembered the next time you open the app.
"Follow system" stays the default.