Credits
I know there is an unlimited membership, and a Xtra membership, but it would be nice to be able to purchase credits to unlock features. For example:
Buy 100 credits for 10 bucks
Viewed me profile unlock: 5 credits
View more profiles for 10 minutes: 5 credits
Boost for 50 credits
Go incognito - 10 credits etc.
No ads for a specific time period - 25 credits
The more credits you buy at one time the more they can be discounted.
Periodically have sales on purchasing credits. For those already subscribed to xtra, have the prices reduced for credits or reduce the anount of credits needed to unlock certain features.
I think this would give people the option to pick or choose what kind of features they are looking for out of the app, and give them control over their own experience.

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