N/A

What is different?
* No iCloud backup
* No ads
* No app recommendations
* Data encryption
Your vault data is only stored on your device. It will not be duplicated or transmitted unless you explicitly hoping to do that.
The master password of your vault is the only way to access your vault data. Without it, even if the FBI or the app developer gets your phone, they cannot access the data even with hacking methods.
Q: So independent and secure, it seems pretty safe... however, How do I migrate the vault to a new phone when I change phones?
A: If you change phones, you can use the export/import operation to migrate your vault to a new phone. That's why I said 'unless you explicitly...' above. The export operation will encrypt your vault and save it as a video file, which will be saved in your album. Then, AirPort the video to your new device, do the import operation to import the password data on your new device.
A: Of course export operation can also be used for backup purposes.