After installing my app on phone, everytime I use it for a while appears the error "Application has stopped". What can I do to stop the app creating new screens until memory is over (I guess this is the problem)? Thank you!

You are getting memory problems because you are only opening screens but not closing them. Read this on how you can do that. https://puravidaapps.com/tribblehunter.php

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Error: Application has stopped

MIT App Inventor Help

vknow360 January 13, 2021, 1:36pm 9

You are not switching screens correctly.
Use this method to switch screens: