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.

v1.3.4 — A safer shutdown when the receiver is pulled out
FIXES
• Pulling the receiver out of the phone while it is decoding could
close the app on some devices.
• If reception cannot be started at all, the app now says so and
returns to the stopped state instead of waiting indefinitely.