RTL-SDR 433

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)