Serial USB Terminal

1.58

Kai Morich

4.38

2,308 reviews

500,000+
Downloads

Free

Terminal for serial devices connected with USB to serial converter

Pros & Cons

Broad chipset support across major USB-serial controllers (FTDI, Prolific, CP210x, CH340)
Simple, text-based terminal tailored for microcontrollers and Arduino projects
Free to use with an optional donation option
Requires USB OTG host support on the Android device for connectivity

No Bluetooth or file-transfer features are advertised, keeping the app focused on USB-Serial terminal use cases
Focused on USB-serial only, which may limit broader peripheral support
OTG hardware is required; devices without USB OTG support may not work

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Serial USB Terminal compared with similar apps

Keywords missing from this app

Otg Data Bluetooth Arduino Checker Phone File Storage Connect Files Communication Cable Send Recent Supported Open External Access Upload Pro Features Check Application Commands User Version Si Compatible Pc Flash Connection Connector Input Text Control Simple Uart Adapter Cards Usbterminal

About Serial USB Terminal

Serial USB Terminal is a tools app developed by Kai Morich.

Download Statistics

Serial USB Terminal has been downloaded 780 thousand times. In the last 30 days, the app was downloaded 8.1 thousand times.

User Ratings

Serial USB Terminal is rated 4.38 out of 5 stars. The rating is based on 2.3 thousand ratings.

App Information

Serial USB Terminal is FREE to download. The APK download size is 1.61 MB. The latest version available is 1.58. The last update was on April 30, 2026.

Technical Requirements

Serial USB Terminal requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play November 2016.

Description

'Serial USB Terminal' is a line-oriented terminal / console app for microcontrollers, arduinos and other devices with a serial / UART interface connected with a USB to serial converter to your android device.

This app supports USB to serial converters based on
- FTDI FT232, FT2232, ...
- Prolific PL2303
- Silabs CP2102, CP2105, ...
- Qinheng CH340, CH341
and devices implementing the USB CDC protocol like
- Arduino using ATmega32U4
- Digispark using V-USB software USB
- BBC micro:bit using ARM mbed DAPLink firmware

To connect USB to serial converters, your android device must support USB OTG aka. USB host mode. Most devices support this today, but in case of issues check with one of the various USB test apps, if host mode is enabled in your android kernel.

All features in this app are free. In-App purchase is only used for the 'Donate' option.

Looking for source code? Here you find a simplified variant of this app:
https://github.com/kai-morich/SimpleUsbTerminal

Recent changes:
1.58 2026-05-01
NEW macros w/o newline
NEW hex macros with delay
1.57 2025-11-07
FIX copy from main text view with unmodified spaces
INFO Android 5.0 as minimum version
1.56 2025-03-17
FIX single CR handling for newline CR+LF setting
1.55 2024-07-21
NEW flow control for FTDI, PL2303, CP210x

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More data about Serial USB Terminal

Price	Free to download
Total downloads	780 thousand
Recent downloads	8.1 thousand
Rating	4.38 based on 2.3 thousand ratings
Ranking	Not ranked
Version	1.58
APK size	1.61 MB
Number of libraries	12
Designed for Android	5.0+
Suitable for	Everyone
Ads	NO ads

App Performance Report

Get a detailed PDF report for Serial USB Terminal with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more

Get PDF Report — $29

Google Play Rating history and histogram

1.5K

430

140

150

Downloads over time

Serial USB Terminal has been downloaded 780 thousand times. Over the past 30 days, it averaged 270 downloads per day.

Changelog of Serial USB Terminal

Apr 30, 2026UpdateVersion 1.58
Nov 6, 2025UpdateVersion 1.57
Mar 17, 2025UpdateVersion 1.56
Jul 21, 2024UpdateVersion 1.55
Jun 2, 2024UpdateVersion 1.54
Jan 12, 2024UpdateVersion 1.53
Dec 17, 2023UpdateVersion 1.51
Nov 25, 2023UpdateVersion 1.50
Jul 4, 2023Installs500,000+ installs
Jun 17, 2023UpdateVersion 1.49
May 1, 2023UpdateVersion 1.48
Mar 11, 2023UpdateVersion 1.47
Jul 31, 2022UpdateVersion 1.46
Apr 12, 2022UpdateVersion 1.45
Sep 23, 2021UpdateVersion 1.44
Mar 7, 2021UpdateVersion 1.42
Jan 3, 2021UpdateVersion 1.40
Oct 3, 2020UpdateVersion 1.39
Sep 10, 2020UpdateVersion 1.38
Jul 29, 2020UpdateVersion 1.37
Mar 1, 2020UpdateVersion 1.36
Feb 15, 2020UpdateVersion 1.35
Feb 2, 2020UpdateVersion 1.34
Jan 12, 2020UpdateVersion 1.33
Dec 8, 2019UpdateVersion 1.32
Aug 3, 2019UpdateVersion 1.31
Jul 21, 2019UpdateVersion 1.30
Jun 22, 2019UpdateVersion 1.29
Jun 4, 2019UpdateVersion 1.27
May 6, 2019UpdateVersion 1.26
Apr 22, 2019UpdateVersion 1.25
Mar 16, 2019UpdateVersion 1.24
Jan 27, 2019UpdateVersion 1.23
Jan 4, 2019UpdateVersion 1.22
Nov 19, 2018Installs100,000+ installs
Oct 16, 2018UpdateVersion 1.21
Jun 11, 2018UpdateVersion 1.20
Jun 3, 2018UpdateVersion 1.19
May 12, 2018UpdateVersion 1.18
Mar 17, 2018Installs50,000+ installs
Mar 10, 2018UpdateVersion 1.17
Jan 21, 2018UpdateVersion 1.16
Dec 3, 2017UpdateVersion 1.15
Nov 7, 2017UpdateVersion 1.14
Oct 21, 2017UpdateVersion 1.13
Jul 11, 2017UpdateVersion 1.12
May 20, 2017UpdateVersion 1.11
May 12, 2017Installs10,000+ installs
Apr 27, 2017UpdateVersion 1.10
Apr 2, 2017UpdateVersion 1.9

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Developer information for Kai Morich

Kai Morich

mail@kai-morich.de

Website

N/A

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Comments on Serial USB Terminal for Android

★★★★★ Brian Blakley · Mar 18, 2024

Very handy for sending serial commands to devices and viewing serial data outputs without needing a laptop. Thanks!

★★★★★ Tech Nineteen · Jan 29, 2025

Great app, it's my go-to app now. I don't need to carry a laptop just a USB-C to USB A cable adapter. One thing that would make it even better would be Ymoden. The ability to receive large files would make it a 6-star app for me.

★★★★★ Ian Crossan · Mar 18, 2025

Edit: default save data folder is inaccessible. Go to settings/misc and change custom folder to whatever you want, I use documents. Then you can view saved logs and data in file browser 👍 Perfect terminal for Arduino projects! I just used this to help develop a bio-based steering wheel control interpreter in my car. The ability to write code which responds to terminal commands has made it so much easier to test and debug my contraption in the car without a laptop, which I don't have.

★☆☆☆☆ surjit singh · Nov 12, 2024

Save data not showing in mobile Pls suggest

★☆☆☆☆ Binay jha · Aug 15, 2023

My phone is vivo v27 your serial USB terminal is not working You will try it and app driver is missing

Google Play Rankings for Serial USB Terminal

This app is not ranked

Technologies used by Serial USB Terminal

Serial USB Terminal is requesting 8 permissions and is using 13 libraries.

Permissions

Network communication

view network connections, full network access, Google Play billing service

Extra

android.permission.FOREGROUND_SERVICE, android.permission.FOREGROUND_SERVICE_CONNECTED_DEVICE, android.permission.FOREGROUND_SERVICE_REMOTE_MESSAGING, android.permission.POST_NOTIFICATIONS, de.kai_morich.serial_usb_terminal.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Ad network libraries

None found

Social libraries

None found

Development tools

Android Jetpack core

Android Architecture Components

Android Jetpack VersionedParcelable Android Jetpack Annotations Android Library Icon

Android Jetpack Annotations Android Jetpack Widgets Android Library Icon

Android Jetpack Widgets Android Jetpack AppCompat Android Library Icon

Android Jetpack AppCompat AndroidX Activity Android Library Icon

AndroidX Activity Android Activity Saved State Android Library Icon

Android Activity Saved State Android Jetpack Media Android Library Icon

Android Jetpack Media AndroidX App Startup Android Library Icon

AndroidX App Startup AndroidX Emoji / Emoji2 Android Library Icon

AndroidX Emoji / Emoji2 AndroidX ProfileInstaller Android Library Icon

AndroidX ProfileInstaller

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