"Google Keep is the best note-taking mobile app I've ever used. Interesting thing is, I didn't realize how good it was until I tried to switch to a better app due to Keep's lack of an obvious export feature. (You can export your Keep notes via Google Takeout.)
What makes Google Keep so special?
— Write icon opens to the body content, not the title. Several other apps open to the title and expect you fill that first. Horrible UX.
— content body begins several pixels from the top. Beginning writing right at the top makes the content feel too far. Cc: Writer Plus, which has a 4.6 rating from 46k reviews.
— focus when scrolling through app includes content body, not titles only. The boxes show parts of the content when you look through the app. Again Cc: Writer Plus and its ilk.
— 'search' searches all of content body + title + links.
— instant cloud sync.
— lightweightness.
— tagging > notebooks/folders. Easier and faster tagging a note than moving it around.
— urls are active links.
— view box is relative to content size.
What It Lacks — Markdown, or something similar
— Import/export
— revision control
— hierarchical structuring
— sharing notes with non-keep users
— linking to other notes within the app
A single feature could solve all last three features it lacks: links. You could copy the link to a note and share with non-Keep users or post it in some other note to refer to that note. (Keep already shows titles and images associated with linked web URLs)."