My passcode was all that hid my photos. So I built Underlock.
I’m Joe Azzi, a product designer in Canada. I make Underlock, a private vault on your iPhone for photos, videos, files and notes.
Why I made it
I kept thinking about what would happen if I lost my phone, or if someone learned my passcode. Anyone with that passcode could open my photos, my files and my important documents.
I wanted a place that encrypts everything that matters to me and opens with my own pattern, not my passcode. And when the kids play with my phone, nothing in that place gets opened or deleted.
What I decided from the start
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I can’t see your files
They’re encrypted on your iPhone before they’re saved. I never receive your files, your pattern or your keys, so I can’t open your vault, hand it over or leak it.
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Nothing to sign up for
No account, no email, no analytics in the app.
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Free forever
One vault with no file limit costs nothing, and that won’t change for you.
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I can’t get you back in
Your recovery phrase is the 12 words you write down at setup. If you lose both your pattern and those 12 words, nobody can open your vault, me included. I’d rather tell you now than later.
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I’m upfront about the limits
What Underlock can’t do has its own page, in plain words.
Talk to me
I answer every email myself.
Try it. Then tell me what you think.
Free for one vault, with no file limit. No account, no email.
For iPhone with iOS 17 or later.