What are some alternatives?
When comparing HearSeeParty and Pixus, you can also consider the following products
Photomosh - Turn anything into a vaporwave
Meazure - What are the dimensions of that image? How big is this window?
Glitchatron - Destroy your favorite photos
Bluegrams Screen Ruler - A lightweight and configurable ruler tool for Windows Desktop.
MVGEN - Make your own music videos with audio, gifs, and special effects
PMeter - PMeter is a very handy pixel meter.