Notepin - Extremely simple note-taking + blogging ✍️
Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
Buno - Simple Note Taking - Simple, minimal & easy note-taking
Fetchee - Fetchee is a free price tracking wish list app that works with all online stores worldwide.
QuickJots - Jot down quick notes and auto-save them with QuickJots. Use GitHub Flavoured Markdown to easily embed images, or even task-lists to track to-dos. It's private — all notes stay local; no login or downloads are needed. There's a dark mode too!
Keepa - Price history charts and the option to be alerted on price drops for all Amazon sites.