Try a lower price
If this app wants to make more money try lowering the membership prices. I am positive that you will increase the revenue of you cut the price by as much as 50% or more. That increases the membership base which in turn allows you to charge more for ad space. In fact, you could make membership $5 and still make lots of money with the added bonus of making a difference between those who will or won't be paid members.

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Jaidin LeJuice commented
These prices are ridiculously high especially in these times. Instead of making "waist of money" pricing I suggest " I can afford to spend that" type of pricing. I think lower pricing would generate more revenue and open more doors and expansion for the platform, as there will definitely be more people subscribing and push Grindr far above the competition