Hello! We’re sorry that there’s been a misunderstanding about the functionality. The application is free to track new/lost followers, users who don't follow you back, and you don't follow back. In the free version of the app, you can analyze your account once a day. We are constantly working on new functionality and will soon release a new one. We hope you find something useful for yourself!
If you have any questions, please contact us and we will help you: support@laroapps.com

Thanks for your review. We are sorry for the confusion caused. The reason why you get charged might be that you didn't cancel the subscription at least 24 hours before the trial ends. Information about auto-renewal has been informed when you start the free trial as well as on the subscription confirmation from Apple.