Spindle is purpose-built for fast one-off snippets. No need to create an entire document for one equation.
No documents means less clutter in your Overleaf account and your Downloads folder. Spindle copies rendered LaTex directly to your clipboard.
You're already at your computer responding to student email. Spindle can be there with you. No need to leave your inbox to take a picture.
Never scrounge for scratch paper again!
Your camera roll won't be filled with shots of hand-written solutions.