I used Mac OS Font Book to export fonts from it. I got 2 fonts files: Font Suitcase and PostScriptType.
Then I want to use these fonts in my iOS application, but to do that I need to convert them to, for example, ttf. But how?
May be someone faced this problem?
Important: I don't need advices how to use custom fonts (such as ttf), I need advice how to use Font Suitcase and PostScriptType of fonts (may be how to convert it to ttf)
This solution doesn't require Fondu or Rosetta, but it does involve a little cut-and-paste into macOS's Terminal app.
Pretty simple, and free. And it works on macOS Mojave.