There is no universal answer
Vault apps handle cloud backup in at least five materially different ways, and the right answer for one product tells you nothing about another.
An app may be included in the device backup, deliberately excluded from it, write a file into iCloud Drive, synchronise through CloudKit, or run its own account service entirely. Each has different implications for what exists remotely and what can restore from it.
Three separate questions people merge into one
Where the encrypted bytes live, where the keys live, and who holds the authority to authorise recovery are three independent facts. A backup can satisfy the first without the others.
This is how a cloud copy can exist and still not be restorable: the ciphertext is safely stored and the key that would decrypt it was hardware-bound to a device that no longer exists.
Vault media is not in your iCloud Photos library
A protected copy imported into a vault is separate from the Photos library and is not backed up by iCloud Photos merely because the original was. Import may leave the original in Photos; verify any deletion separately.
NullVault for iOS uses its own CloudKit backup, separate from your iCloud Photos library. It stores encrypted objects and restores only a matching authenticated generation.
Establish the answer for your app
- Read the vault's current backup documentation rather than assuming platform behaviour.
- Check the iCloud backup detail screen and the app's own settings.
- Identify whether a cloud copy is a backup or a synchronised mirror.
- Perform a real restore on a safe test path before you rely on it.
Two assumptions that cause loss
- Assuming the iCloud Photos library contains app-vault media.
- Treating an enabled backup toggle as proof of recoverability.
A fictional example
Jonas starts with a non-sensitive test: “Read the vault's current backup documentation.” Next, Jonas follows the second check: “Check iCloud backup details and app settings.” This fictional scenario demonstrates the decision process; it is not a report of product testing.
Common mistakes
- Assuming iCloud Photos contains app-vault media
- Treating a toggle as proof of recoverability
What this workflow does not change
- Assuming iCloud Photos contains app-vault media
- Treating a toggle as proof of recoverability
Questions people ask
Will NullVault iOS use iCloud?
NullVault for iOS uses its own CloudKit backup, which is separate from your iCloud Photos library. It stores encrypted objects and restores only a matching authenticated generation.