Appodeal might be a bit more popular than Fyber. We know about 1 link to it since March 2021 and only 1 link to Fyber. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
There are companies that use WP as their main page( see https://snyk.io/ and https://fyber.com/ ). Source: over 2 years ago
Here the are: https://appodeal.com/ They work with apps to help them monetize. Kin could partner with multiple firms like these, who are the ones who know lots of developers. Source: about 3 years ago
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