What Locker is
Locker is listed today as Unlock - App & Photo Locker, formerly Locker - Hidden Photo Vault, published by Relentless Consulting, Inc. It has been on the App Store since July 2017, with a 4.4 rating from about 23,500 ratings, a 52 MB download and a 4+ age rating. It stores photos, videos, notes, files and app links behind Face ID, Touch ID or a PIN.
How it protects your photos
The protection is the lock on the front door. Face ID, Touch ID or a PIN opens the app, and the icon can be changed to a calculator or a timer. The listing does not describe encryption, a decoy, intruder logging or facedown lock.
The listing is unusually honest about the risk: if you skip Face ID and forget your PIN you cannot get in, and if the app is deleted or the phone is lost the files are gone unless you have a device backup.
Where your photos go
Nowhere. The listing says files are only stored on the device, are never stored on the developer's servers and are not accessible to the developer. There is no cloud feature and no described backup beyond your normal device backup.
What it costs
The US listing shows a Premium Pass at $0.99 and $3.49, a Premium Pass Yearly at $19.99 and a Lifetime Pass at $9.99. The subscription starts with a free trial.
What the privacy label says
Nothing is listed as linked to you or used to track you. Under Data Not Linked to You the label lists Usage Data, including Advertising Data, and Diagnostics.
What the listing does not mention
The sources do not mention encryption, a decoy vault, a self-destruct passcode, intruder alerts, facedown lock, a private camera, face blur, downloading from a link, transfer from a computer, any backup, a recovery key, burner email, private contacts, or sub-albums. See Kryptis vs Locker.
Who Locker suits
It suits someone who wants a quick lock, a hidden icon and a one-off price, and is happy to rely on their own device backup. It is the least ambitious app in this set, and it does not pretend otherwise.
Kryptis instead
Kryptis is built for the people these listings leave out: anyone who wants the vault to stay on the phone and stay unreadable. Every photo, video and file is encrypted with AES-256-GCM on the device before it is stored, along with its metadata. There is no account and no server. A second passcode opens a decoy vault with its own albums, a third erases everything, and failed unlocks are recorded. Backup goes to your own iCloud, already encrypted, and the only way back in after a lost passcode is the BIP39 recovery phrase you were given at setup.
