Detecting before application uninstalls to perform particular task.
Scott Pritchard
Android and iOS do not expose public API's which allow detecting when an app is uninstalled in order to execute code. Additionally, both platforms have put huge amount of resources into not allowing apps to arbitrarily track users.
You should consider looking into the analytics provided by the relevant app stores.
TLDR: It's not possible
Robert Fischer
I don't believe that either iOS or Android support this. Do you have evidence/documentation to the contrary?
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