If you use mobile data only on your phones, and you update your apps by transferring apks through local connection (offline), bad news.

Saving to external storage is gone, and every single phone will need to download updates through Aurora separately, either by using up mobile data or connecting to WiFi.

On version 4.4.3 this feature is already gone.

Dev:

... both settings were dropped. I am open to patches if someone can implement it again using the documents API which is recommended by Android.

Source

If you know any app that can extract split apks, so that it can transferred and installed afterwards on another phone, please let me know. Thanks