I previously mentioned that there is LaTeX and MathML support in Pages and iBooks Author. This has now been extended to Numbers and keynote.
Add mathematical equations to your document in Pages, Numbers, and Keynote https://support.apple.com/en-us/HT207569.
You can include mathematical expressions and equations in your Pages, Numbers, or Keynote document when you use LaTeX commands or MathML elements.
The latest version of Pages (version 6.1) and iBooks Author (version 2.0) include support for LaTeX and MathML, this is an interesting addition that will be of interest for many scientists
LaTeX is a high-quality typesetting system; it includes features designed for the production of technical and scientific documentation. LaTeX is the de facto standard for the communication and publication of scientific documents.
I've had a quick look at it here.
There is a listing of software reviews here.