App Advisor is a GPT specifically designed to provide guidance for indie iOS app development. Conceived by Aivars Meijers, it offers informational insights driven by Aivars' expertise tailored to assist indie app developers. The primary focus of this GPT is to amplify the success of an app by providing useful strategies for improvement in a multitude of notable areas. Developers can leverage priceless advice on refining their app's user experience, tapping into the latest trends in app marketing, effectively deploying user feedback to enhance functionality, and arming themselves with effective app monetization strategies. The GPT relies on the power of ChatGPT and, as such, requires ChatGPT Plus for utilization. Developers seeking to boost the success of their indie iOS app can sign up to chat with this GPT.