Installation
- Download SqPaint from the download page.
- Right-click the downloaded file (SqPaint_0.9.0.zip) and choose Extract All.
- Run SqPaint.exe in the extracted folder to start the app.

Note
A warning will probably appear the first time you run it. Click More info → Run anyway.
(This warning appears for most apps made by individual developers.)

Uninstalling
- Just move the whole folder to the Recycle Bin!