Osmo is not available for Android but there are plenty of alternatives with similar functionality. The best Android alternative is Joplin, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Osmo and many of them are available for Android so hopefully you can find a suitable replacement. Other interesting Android alternatives to Osmo are Standard Notes (Freemium, Open Source), Evernote (Freemium), Zoho Notebook (Free Personal) and Cryptee (Freemium, 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.
Colorful & powerful sticky notes app for Windows & Phones. Set reminder alarms, attach them to any website or document, organize them using folders/tags, sync sticky notes between devices & send notes across LAN or to any contact across the globe.
The notes app for creative work. For the research, thinking and planning behind your next great piece of work. # Collect your thoughts Milanote is a place to put it all together. See your ideas, notes and research side by side.