Bear and Ulysses, while nice, do not do what OP is talking about (unless they just did an update I’m not aware of).

Both of these apps do not abstract away the markup after a word is typed. This is the killer feature of Typora, along with the ability to completely redesign the entire editor yourself with a custom style sheet (along with awesome image management).

Typora has completely taken over my markdown workflow because of this.

I’ve tried Bear, Ulysses, IA writer, and countless others. None have this clever blended preview like Typora.