app valuation

I'm looking for someone to help me out with an app valuation. The purpose of this project is for me to sell the app, and it is a web app. My main revenue stream for this app comes from in-app purchases. I'm in need of expertise to accurately assess the worth of the app, taking into account the key factors that will maximize its potential. This is an important step before I proceed with selling the app and I need someone with the right knowledge and experience to help me with this process.