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When someone else knows your iPhone passcode

Hands hold and use a phone outdoors against a blue sky.
  • In the Photos app

    Hidden album

    Opens with your iPhone passcode or Face ID.

  • In Underlock

    Your vault

    Opens with your own pattern, not your passcode or Face ID.

What to do

Underlock is coming soon to the App Store. Here’s how it will work.

  1. Import

    Underlock copies the photos you choose into your vault.

  2. Move the originals

    When the import finishes, Underlock offers to move the originals to Recently Deleted.

  3. Delete for good

    In the Photos app, delete the originals from Recently Deleted.

Put private photos in your vault

Importing puts a copy of each photo in your vault. The originals stay in the Photos app until you remove them.

  1. In Underlock, tap the Add button (a plus sign), then Import from Photos.
  2. Choose the photos you want in your vault.
  3. Keep Underlock open until the import finishes.
  4. When the import finishes, Underlock asks whether to remove the originals from the Photos app. Tap Remove.
  5. When iOS asks to delete the originals, confirm. The originals move to Recently Deleted in the Photos app.
  6. While the originals are in Recently Deleted, check that the photos are in your vault.
  7. To remove the originals for good, delete the originals from Recently Deleted. Until then, Recently Deleted keeps the originals for 30 days, and your passcode opens Recently Deleted. After 30 days, the originals are gone for good.

For new photos

  1. In Underlock, tap Add, then Take photo or video. Nothing goes to the Photos app.

What Underlock does

  • A separate lock. Your vault opens with your own pattern, not your iPhone passcode or Face ID.
  • Locks as you leave. By default, your vault locks the moment you leave Underlock.
  • Nothing to see without your pattern. Anyone who opens Underlock finds only the pattern screen: no photos, no vault names and no way to delete anything.

Questions people ask

Yes. Apple’s Hidden album opens with Face ID, Touch ID or your iPhone passcode. Photos in Underlock open with your own pattern instead.

No. Your pattern and your iPhone passcode are separate. Face ID doesn’t open Underlock either.

Yes. Anyone who looks at your Home Screen can see the Underlock icon. Without your pattern, Underlock shows only the pattern screen.

Yes. Underlock is free forever: one vault, no file limit. If the free plan ever changes, you keep the plan you started with. More vaults come with Pro, Underlock’s paid plan.

A lock your passcode doesn’t open

Free for one vault, with no file limit. No account, no email.

For iPhone with iOS 17 or later.

Coming soon to the App Store

Get an email when Underlock launches

  • Lifetime Pro for $39.99 at launch, not $49.99.
  • Then news a few times a year.
  • Leave the list any time.

You’re on the list.

Underlock · hello@underlock.app