We’ve all been there. You are setting up a server, deploying a script, or locking down a config file. You stare at the terminal and type:

chmod 777 script.sh

It works, but it’s reckless. Or maybe you try to remember if “Read Only” is 4 or 2. Is 644 safe for a private key? Or was it 600?

Linux permissions are elegant, but calculating them in your head is prone to error. That is why we built CHMOD Lab.

Beyond the Calculator

There are plenty of web calculators out there. But they are often clunky, riddled with ads, or require an internet connection. We wanted something that felt native—a tool that respects your time and helps you understand the logic behind the numbers.

CHMOD Lab is an interactive sandbox.

We didn’t just want to give you the answer; we wanted to visualize the bits. When you toggle a switch in the app, you see the Octal value (755) and the Symbolic string (rwxr-xr-x) update instantly in real-time. It turns abstract math into a tactile control panel.

Native & Private

Like everything at PyxelBlaze, this tool is engineered with Swift. It is 100% offline and launches instantly. No web wrappers, no tracking scripts, just a sharp utility that does one thing perfectly.

Key Features:

• • Visual Sandbox: Toggle Read, Write, and Execute bits for Owner, Group, and Public.

• • Bi-Directional: Type 755 to see the switches move, or toggle switches to get the code.

• • Special Bits: Full support for SUID, SGID, and Sticky Bit (the tricky stuff).

• • Terminal Ready: Copy the exact command to your clipboard with one tap.

We believe developer tools don’t have to look like spreadsheets. They should be as designed and fluid as the apps we build for consumers.

CHMOD Lab is coming soon to the App Store. [Link to Apps Page]