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Challenge your players.
Lock Challenge turns any text, link or image into an interactive puzzle. Choose from 12 locks — code, pattern, direction, GPS, music — and share a simple link.
Lock name
Hidden message
Secret code
Simple and fast
Create a lock in 4 steps. No technical skills required.
Mobile-first
Optimized for smartphones. Your participants scan and play.
12 lock types
Numeric, directional, pattern, password, colors, musical, GPS and more!
Share with one click
Short link, QR code, custom link. Everything is ready.
Popular ways people use it
One lock, one link, one moment they will not forget.
Pregnancy reveal
Turn your pregnancy announcement into a moment they will remember. Lock a message, a sonogram, or a due date behind a code, send a link, and watch their face when it unlocks.
Online gender reveal
Skip the balloons and cake. Hide your result behind a single lock, share the link with everyone near or far, and let them crack the code to find out it is a boy or a girl.
Surprise gift reveal
Make giving the surprise as fun as the gift itself. Hide a present, a voucher, or a trip behind a lock, and let them crack the code to reveal what is waiting for them.
Proposal reveal
Ask in a way they will tell everyone about. Hide 'Will you marry me?' behind a code built from your story, and let them crack it to reveal the question.
QR code reveal for marketing
Give customers a reason to engage. Hide a discount, a code, or a surprise behind a lock, print it as a QR code, and let them crack it to reveal the offer. Commercial use is allowed and Pro removes the watermark.
Try it yourself
Test our 12 interactive lock types. No sign-up required.
Enter the correct 4-digit code — hint: the simplest sequence.
0/12 locks solved
Create my first lock →Who is it for?
Lock Challenge fits any context where you want to gamify access to information.
Education
Make your lessons interactive: students must solve a lock to access a clue, an answer key or a bonus.
Escape games & team building
Add virtual locks to your scenarios. No equipment needed: a QR code is all it takes.
Events & marketing
Create contests, hidden offers or surprises for your customers and guests.
Simple and transparent pricing
Start for free, upgrade to Pro when you need it.
Free
$0 forever
- • Unlimited locks & chains
- • 30 attempts per lock
- • All lock types
- • QR code + short link
- • Statistics
- • Lock Challenge watermark
Pro
$29 lifetime
- • Unlimited locks
- • Unlimited multi-locks
- • Competition mode
- • Advanced statistics
- • Commercial use allowed
- • No watermark
- • Iframe integration
- • Priority support
Ready to create your first lock?
Free sign-up, no credit card required. Enjoy 30 free attempts.
Get started for free →