Recommend an editor in which you can place pictures, arrows between them and a hidden (can be expanded) description of the pictures?

Question

Preparation of terms of reference

Why do I need it: I want to try to fix the requirements for a mobile application in this way. On one worksheet, all screens of the mobile application, the arrows show which controls lead to which pages. Each page has a detailed text explanation.
Mandatory requirements: should work on both Mac X and Windows
XMind didn't really like it, because the image description view window is fixed small and unsuitable for a large description.
Thank you.

Answer 1

https://www.invisionapp.com/
https://ninjamock.com/
For fixing the requirements and flow of the application (and not only), the first is more convenient.

Answer 2

As a result, I settled on realtimeboard. A powerful and extremely thoughtful tool, not ideal for my task, but I haven’t found a better one yet.