For years now I have been running into an issue with Invision Prototypes when dealing with clients.
Problem #1: It's not easy to navigate and have to explain InVision every time to a new client. Even if you explain it correctly, they don't end up using the "commenting" option and still send everything in an email or a google doc.
Problem #2: there is no easy way to download the PNG in hi-res without using the Google chrome "inspect" tool.
Solution: when you are in the InVision project screen, you can just click on the chrome extension and it will automatically download the design file in hi-res PNG.
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