I am currently running an application in Korea that analyzes the results of sports Toto matches. I earn approximately $500–550 per month through in-app purchase

I am currently running an application in Korea that analyzes the results of sports Toto matches. I earn approximately $500–550 per month through in-app purchases. This business model is somewhat limited, so I am considering other services. https://play.google.com/store/apps/details?id=com.tistory.ddaying.pm https://play.google.com/store/apps/details?id=com.tistory.dd...