Is there any definite information about wether or not the odds of encountering a shiny are increased when using DexNav and about exact numbers?
I’m pretty sure odds are increased, but not sure about the exact percent. It may depend on your chaining too.
Thanks, do you just have a hunch that it´s increased or some kind of proof/experience? And would you mind explaining “chaining” ? 
A Dev tweeted about it iirc. By chaining, I mean successfully using the dex nav over and over again to improve results.