Visual Aid to write narrative and game structure

[HowardTheDuck]

Hi All, I am a new user or Renpy and working on a new game.

I was wondering if there's any chance to take advantage of a "graphical" aid like in Twine to have a quick look (graphically) at the layout of the narration.

I mean that it would be very useful to be able to write all the narration (already with options/choices etc) before moving to the scripting and coding work.

Actually I am using Twine for this and will move to renpy once the story is completed...but was wondering if a different approach would be best considering I will be definitely developing the game with Renpy and I will be moving to code the app on Xcode as well for iOS distribution.

Any suggestion? Or my double approach (Twine for writing and put the narration basis and Renpy to develop the full game) is indeed a good option?

Thank you guys!