I’m looking for someone comfortable working in MIT App Inventor to turn my rough concept into a functional Android application. The core requirement is a reliable user-authentication flow—new users must be able to sign up, returning users must log in, and the app should remember their session until they log out. I have already prepared the base map with design, i need the block work and spreadsheet coding work to be done. I’ll consider the job complete when: • sign-up / log-in / log-out all work consistently, and all the data entered nat signing in will be stored on the google spreadsheet. • I receive the clean, commented .aia file. If you’ve built similar MIT App Inventor projects, please mention them and the typical turnaround time you need.