I recently created a new app in AppInventor. After installing the app on my device, the app launches and then crashes immediately. I try to relaunch the app and this time it says that my app is not responding.
Check the TinyDB default values.
(Canned Reply: ABG- Export & Upload .aia)
Export your .aia file and upload it here.
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One of the most common reasons is an image/images that the phone cannot handle (too much memory, dimensional size requiring run time scaling).
See:
https://www.professorcad.co.uk/appinventortips#TipsImages