If you are losing the app after several months of non-use, there's a way around that.I've got Strelok, on my phone and a tablet. But it took me forever to figure out how to get around in it and If I don't use it for a few months I have to start over. Is there any that an electronics dummy can get around in?? i used JBM for ever and its easy to get around in does JBM have an APP so I can put it on my phone?
On my Android phone, I select the Strelok Pro from the list of apps (in settings) , then under app info - toggle off "pause app activity if unused". This is the setting that removes the permissions set for the app and deletes temporary files it has created.
Hope that helps.
There are ways to transfer Strelok to new Iphones as well, though I think you need to do it before you delete the old phone. The app is called iMazing, used to transfer.