GRBL CNC Controller

1.0
34 reviews
5K+
Downloads
Content rating
Everyone
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About this app

Take full control of your GRBL CNC with GRBL CNC Controller!

Connect your Android device directly to your Arduino-based GRBL CNC machine via USB OTG for an intuitive and portable control experience. GRBL CNC Controller puts all essential functions at your fingertips on a clean, user-friendly interface.

Key Features (as seen in your interface):

Direct USB OTG Connection: Easily connect with selectable baud rate.
Real-Time Work Position (WPos): Instantly view X, Y, Z machine coordinates.
Set Work Zero: Dedicated X0, Y0, Z0 buttons and "Go XY/Z Zero" commands.
Essential Machine Controls: Access Reset, Unlock, and Home functions.
Intuitive Jogging: XY jog pad, Z-axis buttons, and adjustable jog step/speed.
Spindle Control: Toggle spindle ON/OFF and set spindle speed.
GRBL Terminal Access ("Term"): Send custom commands and view GRBL responses.
G-Code Management: Open .nc/.gcode files, Play/Stop jobs, and see file status.
Live Feedrate Override: Adjust job speed (+/-10%) on the fly.

Why GRBL CNC Controller?

Streamlined Interface: All primary controls on one screen for efficient operation.
USB OTG Simplicity: Plug-and-play connection, no complex network setup.
Core CNC Functionality: Covers all essentials for daily CNC tasks.
Portable & Convenient: Control your machine without being tied to a PC.
Ideal for:
DIY CNC Router, Mill, or Laser users with GRBL/Arduino setups.
Hobbyists and makers seeking a straightforward mobile controller.

Requirements:

GRBL-flashed CNC machine (Arduino or compatible).
Android device with USB OTG support.
USB OTG adapter/cable.
Download GRBL CNC Controller today and simplify your CNC workflow!
Updated on
Jun 19, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
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Committed to follow the Play Families Policy

Ratings and reviews

1.0
28 reviews
Bruce Shearer
January 31, 2026
This tool doesn't work. When I try to connect to my machine it just tells me "still loading ads, try again later". I'm not going to buy the paid version if I can't verify the free version works.
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Brian Girnus
January 4, 2026
does not work at all.. claim to be trying to load an add but never does and just waites until you get frustrated enough to try the premium version that's most likely also a scam.
1 person found this review helpful
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Dmytro Ilnytskyi
August 29, 2025
Not working. You must watch an ad for every attempt to connect. The worst part is when an app fails to load an ad it refuses to connect either
3 people found this review helpful
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What’s new

position overwrite setting
better ui layout
integrated ads