Serial USB Terminal is made and published by Kai Morich. AppBrain is an independent app data site and isn't affiliated with Kai Morich. The app name, icon, screenshots and description belong to Kai Morich and are shown as published on Google Play.
AppBrain's verdict
EstablishedWell rated- Rating on Google Play
- 4.43
- 2,377 ratings
- Installs
- 820 thousand
- Last updated
- July 18, 2026
- Ads
- No ads
- Size
- 1.61 MB
Serial USB Terminal has 820 thousand installs. Users rate it well: 4.4 stars from 2,377 ratings.
Summary
Serial USB Terminal by Kai Morich turns your Android device into a USB-to-Serial host for microcontrollers, Arduinos, and other UART devices. It supports FTDI FT232/FT2232, Prolific PL2303, Silabs CP2102/CP2105, CH340/CH341, and USB CDC devices over USB OTG, offering a reliable, line-oriented console. All features are free to use with a donations option, and the app has 500,000+ total downloads with 11K in the last 30 days.
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
User feedback
Ratings and reviews on Google PlayComments on Serial USB Terminal for Android
Google Play Rating history and histogram
Store listing
By Kai Morich, from Google Play“Terminal for serial devices connected with USB to serial converter”
Description by Kai Morich Written by the developer, not by AppBrain. Click to read.
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:
1.60 2026-07-18
NEW support input control lines for CDC devices. Only some CDC devices support control lines and CTS is not supported at all
1.59 2026-06-09
NEW scale font with 2-finger pinch
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
Safety and technology
Found in the app by AppBrain- Ads
- No ads
- Price
- Free
- Libraries
- 12
- App size
- 1.61 MB
- Needs Android
- 5.0+
- Content rating
- Everyone
Technologies used by Serial USB Terminal
Releases
Updates seen on Google Play- Version
- 1.60
- Launched
- November 2016
Alternatives
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Installs
Tracked by AppBrain- Last 30 days
- 11 thousand
- Per day
- 360
- 30-day average
- Play install range
- 500+ thousand
- Launched
- November 2016
Installs over time
Serial USB Terminal has been installed 820 thousand times. Over the past 30 days, it averaged 360 installs per day.
Rankings
Google Play top chartsGoogle Play Rankings for Serial USB Terminal
About the app and developer
About Serial USB Terminal
Serial USB Terminal is a tools app developed by Kai Morich.
Install Statistics
Serial USB Terminal has been installed 820 thousand times. In the last 30 days, the app was installed 11 thousand times.
User Ratings
Serial USB Terminal is rated 4.43 out of 5 stars. The rating is based on 2.4 thousand ratings.
App Information
Serial USB Terminal is freely available from Google Play. The app size is 1.61 MB. The latest version available is 1.60. The last update was on July 18, 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 since November 2016.
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