Apps similar to Defter Notes include visualOS, which has a free version. Other options are Bulletin Infinite Canvas and Corkulous. In total there are three Mind Mapping Tools like Defter Notes for Mac, iPhone, iPad and the web.
A local-first infinite canvas for visual thinkers — boards are real folders on your disk, documents are Markdown files. Works fully offline, no account needed.
Germany
EU
Bulletin is an infinite canvas for anything you can imagine — mood boards, mind maps, plans, habit trackers, or a home for everything you keep meaning to get to. Add blocks, arrange them however you like, and make every one of them look exactly the way you want.
Singapore
Corkulous™ idea board is the incredible new way to collect, organize, and share your ideas. Access your ideas anywhere on your iPad, iPhone, and iPod touch with built-in iCloud support.
United States
