While there is no specific iOS version, you can enable Google Handwrite in mobile Safari or Chrome to search with finger or stylus.
I implore you to look at an iPad and consider its strengths as a learning device — there is no greater device for learning than the iPad Pro and Apple Pencil.
I find that getting the best results out of Nebo requires writing slowly and deliberately, which for me nixes the appeal of writing by hand in the first place. The lag on Notes plus on pasting more than one picture between apps is 5 minutes.
When the iPad debuted init promised to eliminate the need to carry textbooks and notebooks, and seemed like an easy fit to take the place of the inch MacBook Pro at least for study purposes.
No drag and drop is an issue. Natural Ink Feel — The ink that a note-taking app chooses is also at the top of the list. For this I like to copy small parts of diagrams, and place these pictures next to a brief description of the drug or disease.
From the main menu, search results are listed in categories of note type such as written notes, PDFs, and types notes.
Even so, I still find myself returning to it, mainly out of admiration for how well its other pieces fit together. Instead, it is saved and exported with each page being a separate document. Double-tapping on any handwriting can automatically convert it to text, and a variety of tools are focused on correcting the hand-written text to be more easily parsed scribbling out letters erases them, lines between letters joins them or moves them further apart.