How to copy an apps to another Xperia Z?

[PepitoRickoLass]

Hi,

Is it possible to copy a specific apps from mine Xperia ZX to another Xperia ZX?

I don't want to transfer the file, but make a copy of the second phone.

This apps is still working, but no more available for uploading on any app store.

Thanks for your help.

[Uliwooly]

@PepitoRickoLasson 

not without root access, which app is it?