They aren't exactly clear on that, though they seem to imply they are looking for other revenue streams:

> As a heads up, in the future we may partner with like-minded companies, but any sponsorships will not involve the sharing of your data.

It is easy to be cynical about statements regarding the protection privacy these days since many of claims are so distorted that they should be treated as outright lies. On the other hand, there are people behind every business and it is possible those people have become uncomfortable with what they are doing. They may be willing to make some compromises until they find a solution which fits their values. Alas, the problem lays in figuring out whether the latter is true.

Probably selling user's data? If there's one thing I learned, it is that it's almost always the "too good to be true" scenario.

There are in-app purchases for coins, so I guess that's how?

a model similar to the one used by reddit, you buy coins that release new skins in the games