Quiver

A notebook built for programmers

Screenshots

Hunter's comment

Here is an all in one note-taking app for programmers and coders. It helps them to code, format with markdown and especially it has LaTex feature too. LaTex allows you to build diagrams like flowcharts with MathJax.

Quiver is a notebook built for programmers. It lets you easily mix text, code, Markdown and LaTeX within one note, edit code with an awesome code editor, live preview Markdown and LaTeX, and find any note instantly via the full-text search.
Source

Link

https://apps.apple.com/app/quiver-programmers-notebook/id866773894?ls=1&mt=12