SerialCloud: Serial Gateway
SerialCloud Tools In-app purchases Contains ads
Connect USB Serial devices to MQTT with rules, routing and automation
- Downloads
- 42+
- on Google Play
- Price
- Free
- In-app purchases
- Updated
- Sep 21
- 2026 · v1.0.5
Screenshots
About SerialCloud: Serial Gateway
Connect your USB serial devices to MQTT and build bidirectional communication flows directly from your Android phone.
SerialCloud : Serial Gateway can work as a standalone serial terminal, a Serial-to-MQTT bridge, an MQTT-to-Serial bridge, or a programmable automation gateway.
KEY FEATURES
• USB Serial connectivity
Connect USB serial devices using Android USB OTG.
• Serial to MQTT
Forward serial data to any MQTT topic.
• MQTT to Serial
Receive MQTT messages and send them directly to your serial device.
• Bidirectional communication
Build two-way communication between serial devices and MQTT clients.
• Custom MQTT broker support
Connect to your own MQTT broker using your preferred host, port, TLS, username and password.
• Conditional flows
Create rules that inspect incoming serial or MQTT messages and perform actions when conditions match.
• MQTT topic filters
Use MQTT topics and standard + and # wildcards for flexible routing.
• Payload parsing and formatting
Work with RAW, HEX, ASCII, Line and JSON data formats.
• Background gateway
Keep SerialCloud : Serial Gateway running as a background gateway while your phone is connected to your serial hardware.
• Automatic reconnection
Recover from temporary USB, network and MQTT connection interruptions.
• Serial terminal
Monitor RX and TX traffic and manually send ASCII or HEX data.
• Logs and diagnostics
Monitor serial, MQTT, rule and error events with filtering, search and CSV export.
• Push notifications
Trigger Android notifications when conditional flows match.
• Device profiles
Save and switch between multiple serial configurations.
FLEXIBLE MQTT
Use SerialCloud : Serial Gateway with your own MQTT infrastructure or connect through your preferred MQTT server.
Configure TLS, authentication, client IDs and custom topics without being locked to a specific broker.
WHO IS SerialCloud : Serial Gateway FOR?
SerialCloud : Serial Gateway is useful for developers, makers, IoT enthusiasts, electronics projects, automation systems, USB-to-RS232/RS485 devices and anyone who needs to connect serial hardware to MQTT.
PRIVACY
SerialCloud : Serial Gateway is designed to keep your device communication under your control. Custom MQTT connections use the broker configuration you provide.
Some features may require additional Android permissions or compatible USB hardware.
SerialCloud : Serial Gateway : is continuously improving with new protocol, automation and gateway capabilities.
What’s new
Version 1.0.5 · Updated September 21, 2026
Initial release of SerialCloud Connect USB Serial, RS232, and RS485 devices to MQTT Bidirectional Serial ↔ MQTT communication Custom MQTT broker support Conditional routing rules with MQTT topic filters and wildcards Background gateway operation with automatic reconnect Serial terminal with RAW, HEX, ASCII, LINE, and JSON formats Real-time logs, search, filtering, and CSV export Flow editing and serial profile management Optional push notifications for conditional flows
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| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| SerialCloud: Serial Gateway | – | Free | 10+ | Sep 21, 2026 | |
| Sonaria: Microtonal Keys | – | Free | 100+ | Sep 11, 2026 | Compare |
| BlackTape: Photo Censor & EXIF | – | Free | 1+ | Aug 31, 2026 | Compare |
| NestPeek: WiFi Baby Monitor | – | Free | 10+ | – | Compare |
| CamSync: Camera to FTP | – | Free | 100+ | Sep 15, 2026 | Compare |
| Clear Grid: Block Puzzle | – | Free | 5+ | May 14, 2026 | Compare |
| CamOps: RTSP Camera Viewer | – | Free | 100+ | Feb 21, 2026 | Compare |