Don’t worry, I felt made a fool of after watching too. The producers of Billion Dollar Code are weak for doing what they did, even if it makes the story better.
The German group presented the app at Kyoto, before anyone else did.
It appears at least to zooming tech was borrowed by google.
Google won in court, based on hearsay and date of patents.
I have to add, I have not even watched the movie, so my view should not be distorted, but I will give myself the unfiltered "based on a true story" as soon as I can.