Goodnotes is a note taking app first released in 2011 by Steven Chan. It is one of the most used apps on iPad and is popular with students.
Users write by hand with a stylus in digital notebooks, choosing paper styles such as lined, grid or dotted. PDFs and slides can be imported and annotated, which makes it a common choice for lecture notes. Handwriting is searchable and can be converted to text. Digital planners, stickers and templates are widely shared by users.
Goodnotes runs on iPad, iPhone, Mac, Android, Windows and the web. The free version allows a few notebooks, and a paid plan removes the limit.