Mine is a humble little personal finance app called GreenBooks (https://greenbooks.app https://greenbooks.app). For the last few months, my proceeds from the Ap

Mine is a humble little personal finance app called GreenBooks (https://greenbooks.app https://greenbooks.app). For the last few months, my proceeds from the App Store is ~$500. That is after Apple's 15% cut. Not bad for a side project.