How to choose the right advertising platform to display promotional videos?

Question

Android

Background:
The application has several sections that open only when you purchase the paid version. There was one idea. For example, in the game Subway Surfer, you can watch video ads once a day, for which you get game "goodies". I want to do something like this: once a day you can watch an advertising video, after watching which you can open one of the closed sections for free. Wouldn't this violate Google's policies? And the rules of the advertising platform that you recommend?
Essence of the question:
Tell me, what kind of advertising platforms do you know? If you personally had experience with them, what was it like (eCPM, some mistakes, violations of the rules)? And it would be nice if there were some legible manuals for a beginner like "how to implement advertising from such and such a site"? And, it is desirable, but not necessary, that the Russian language be present both in the manual and on the website of the site?

Answer 1

Hey!
Unfortunately, in the monetization of mobile is not strong.
I know that there are adtoapp.com and appodeal.com mediators. They themselves choose which grid to upload the impression to in order to get the maximum eCPM.
I'm not talking about the rules. Mobile video grids are quite easy to google.
I also saw the described mechanics in applications. If they make large applications, then they are allowed.
If you want to bother - it's better to manually dig and select. If not, then there should be enough mediators.

Answer 2

I think the video is now the best option is UnityAds