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, directly on the internal memory. You can use a laptop, cloud or sd-card for the file transfer.
When the copy is done, start LockMyPix on the new device and enter your same password. Open the settings and import your backup.