You can transfer your private LockMyPix vault to a new device at any time.
Open the LockMyPix settings and create a backup on the old device. The backup file will be stored inside the folder LockMyPix backups on the internal memory or sd-card.
Copy the backup file to the new device. Place it directly on the internal memory, not inside a folder. You can use a laptop, cloud or sd-card for the transfer.
Once the copy is done, start LockMyPix on the new device and enter your same password as on your previous device. This is required, as your files are encrypted with your private password. Then, open the LockMyPix settings and import your backup.