Game Link:

https://theflyingnest.itch.io/sketch-companion

    Sketch Companion is a tool created to aid you in practicing your artistic skills by giving you a lightweight and highly customizable means of studying reference images. This program is best used as a “drawing grid” to reproduce reference images or add grids and save them out for later study. 

This program features:

Standard X and Y grids

Perspective grids

Save feature for images with grid overlay

This program is a work in progress and suggestions for features and improvements are highly welcome. And can be done so here:

https://flyingram.deviantart.com/journal/forum/2397121/