# SerialFlow: USB Serial Monitor

> USB serial monitor & terminal for Arduino, ESP32, STM32, CH340 and CP210x.

Canonical page: [https://chrome-stats.com/d/io.serialflow.terminal](https://chrome-stats.com/d/io.serialflow.terminal)

## Overview

- **ID:** `io.serialflow.terminal`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** serialflow
- **Category:** TOOLS
- **Downloads:** 3,568
- **Version:** 1.1.5
- **Last updated:** 2026-09-01
- **First published:** 2026-06-28
- **Publisher country:** CN
- **Size:** 32 MB
- **Data as of:** 2026-09-14
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=io.serialflow.terminal)
- **Website:** [https://serialflow.io/](https://serialflow.io/)
- **Privacy policy:** [https://serialflow.io/terminal/privacy/](https://serialflow.io/terminal/privacy/)

## Description

SerialFlow is a USB serial monitor and terminal for Android. Connect Arduino, ESP32, STM32 boards, USB-to-serial adapters, GPS modules, sensors, and other embedded hardware directly to your phone or tablet using USB OTG.<br><br>Connect a USB serial device directly to your Android phone or tablet, monitor incoming data, send commands, and quickly find the information you need without digging through endless lines of logs.<br><br>KEY FEATURES<br><br>• USB serial monitoring and two-way data transfer<br>• Text, Raw and Modbus RTU views<br>• Fast log search and filtering, including regular expressions<br>• Hex display and Hex sending<br>• Configurable baud rate, parity, data bits and stop bits<br>• DTR and RTS control<br>• Quick commands for frequently used instructions<br>• Log export and sharing<br>• Background connection support<br>• ESP-IDF and Arduino-ESP32 log highlighting<br>• NMEA data parsing for GPS devices<br>• 3D attitude visualization for supported sensor data<br><br>SERIALFLOW PRO<br><br>Unlock advanced debugging and visualization tools with a one-time purchase:<br><br>• Real-time waveform visualization<br>• GPS satellite diagnostics<br>• NMEA position map<br>• Loop Send with custom intervals and repeat counts<br>• Larger log buffers<br>• Unlimited Quick Commands<br>• Remove ads<br><br>SerialFlow Pro is a one-time purchase. No subscription and no automatic renewal.<br><br>The free version keeps the essential serial workflow available, including USB connection, data monitoring, sending, search and filtering, common decoders, and basic Quick Commands.<br><br>Whether you are debugging firmware, inspecting sensor output, testing a GPS module, communicating with a microcontroller, or diagnosing an industrial device, SerialFlow is designed to turn your Android device into a practical portable serial debugging workstation.

## Rankings

- #797,958 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.FOREGROUND_SERVICE_CONNECTED_DEVICE`
- `android.permission.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`
- `com.google.android.providers.gsf.permission.READ_GSERVICES`
- `io.serialflow.terminal.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Similar extensions and apps

- [KSerialPort - Serial Terminal](https://chrome-stats.com/d/com.onatakduman.kserialport) — 156 users
- [Serial USB Terminal](https://chrome-stats.com/d/de.kai_morich.serial_usb_terminal) — 802,223 users, 4.37 / 5
- [UsbTerminal](https://chrome-stats.com/d/com.liorhass.android.usbterminal.free) — 127,570 users, 3.93 / 5
- [Serial Sensor Plot](https://chrome-stats.com/d/com.troyasoft.pro.serialplot) — 124 users
- [Serial Terminal - RS232/485](https://chrome-stats.com/d/com.hardcodedjoy.serialterminal) — 9,268 users
- [Serial Terminal Pro](https://chrome-stats.com/d/com.hardcodedjoy.serialterminalpro) — 666 users
- [USB Serial Terminal Ultimate](https://chrome-stats.com/d/com.moonappdevelopers.usbterminal) — 12,019 users, 3.25 / 5
- [Bluetooth Serial Terminal Ulti](https://chrome-stats.com/d/com.moonappdevelopers.serialterminalforbluetooth) — 7,582 users
- [Modbus/Serial Monitor](https://chrome-stats.com/d/com.modbusserialmonitor) — 164 users
- [USB Terminal](https://chrome-stats.com/d/com.serialcloud.usbterminal) — 11,132 users
- [USB Serial Terminal](https://chrome-stats.com/d/project.usbserialterminal) — 26,877 users, 4.33 / 5
- [Simple Serial Port](https://chrome-stats.com/d/com.alparslanguney.simple_serial_port) — 7,415 users

---

Source: [Chrome-Stats](https://chrome-stats.com/d/io.serialflow.terminal)