How to withdraw money from the mobile application?

Question

Mobile development

Hello. We are developing a mobile application for the provision of services. The essence of the application in "two" words:
You indicate professional skills in your profile, and they must be confirmed, for example, copies of documents are sent (this can be any certificates, diploma, diploma ...). People can ask profile questions, but you answer them for a certain amount of money. To simplify the task, we specifically made an internal currency for this, but now the problem is, how can you convert this virtual money into real money? Has anyone experienced this?
PS: we only consider white methods))

Answer 1

and how your users replenish Wirth. currency?

Answer 2

IMHO
It's not worth the hassle.
If the money is asking the question, then it’s better to act as a kind of guarantor of the transaction (as many freelance exchanges work). Those. client The client deposits the amount, and the responder receives this amount if the answer was correct and accepted by the client.