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.
Apple has released updates to their iWork productivity suite, perhaps most interestingly Numbers now regains applescript support. If you open the Applescript dictionary most of the classes and commands are now available again, still absent are “split into columns” and “split into rows”.
The mobile version of Numbers for iOS has also been updated.