Noteful is described as 'is your one-stop note-taking app to experience the new paperless revolution on iPad' and is a Note-taking Tool in the Office & Productivity category. There are more than 100 alternatives to Noteful for a variety of platforms, including Android, Windows, Mac, Online / Web-based and iPhone. The best alternative is Joplin. It's not free, so if you're looking for a free alternative, you could try Standard Notes or Microsoft OneNote. Other great apps like Noteful are Obsidian (Free Personal), Google Keep (Free), Evernote (Freemium) and Simplenote (Free, Open Source).
Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, can be copied, tagged and modified either from the applications directly or from your own text editor.