Notes is described as 'Use Notes to capture a quick thought, create checklists, sketch ideas, and more. And with iCloud, you can keep your notes up to date across all your devices' and is an app in the Office & Productivity category. There are more than 100 alternatives to Notes for a variety of platforms, including Windows, Mac, Android, iPhone and Online / Web-based. The best alternative is Joplin, which is both free and Open Source. Other great apps like Notes are Standard Notes (Freemium, Open Source), Google Keep (Free), Microsoft OneNote (Freemium) and Evernote (Freemium).
USticker is free of charge version of "MakerX" app. USticker is notebook app for your iPhone or iPad with set of tools for organizing. The app lets you make quick notes with sketch/photo-sketch and categorize ones with special very efficient markers for organizing.