WALK50K
iOS · Free to start
JOIN THEWITNESS.
Walk 50,000 steps in 24 hours.
Verification through endurance. Your steps are your currency.
Product demo
From one tap to a witnessed result.
The rules
Three rules. No exceptions.
Every step counts. Only steps count.
No shortcuts. No excuses.
What makes it different
The constraint is the identity.
One button
No feed, no streaks, no gamification noise. Press Start. The challenge begins.
Live reactive counter
Every step lands on screen as you walk. The ring fills. The countdown ticks. Feel every step.
Verifiable by design
Steps come straight from Apple Health — no manual entry, no editing. Server-side checks confirm the result.
You're not alone
See how many people are walking right now. No social graph. Just a count.
How it works
Four steps. Twenty-four hours.
01
Press Start
The 24-hour window opens. By pressing start, you accept the physical cost.
02
Walk
Live step counter updates in real time. Every step is on screen.
03
Hit 50,000
The app knows the moment you cross the line.
04
Get witnessed
A timestamped, shareable digital certificate. Proof you did it.
Three challenges
Pick your distance.
Warm-up
10,000
Steps / Day
Challenge
25,000
Steps / Day
The Quest
50,000
Steps / Day
One day. One goal. Infinite grit.
WITNESSED.
The challenge is complete. Your certificate is generated, timestamped, and yours to keep.
DNF.
Did not finish. The witness has recorded your effort. It was not enough. Try again.
WALK50K
The Quest
Alex Runner
50,012
Steps Reached
50,000 STEP GOAL
The artifact
A certificate worth keeping.
When you hit 50,000 steps, the app generates a timestamped digital certificate — tied to your account, verified by HealthKit, traced by a thin line of the route you actually walked. Something you screenshot and keep.
The certificate is the product, not a reward for the product. It means something because it can't be faked. Scan the code — it resolves to the public verification page.
Built for trust
Proof without giving up your privacy.
Apple Health steps
WALK50K reads step counts from HealthKit to track the challenge. It never writes data back to HealthKit.
Server-side checks
Completion is checked by the server before a certificate becomes a public, verifiable record.
Location is optional
If you allow location access, the public certificate shows a normalized route shape, never your raw GPS coordinates.
You stay in control
Leaderboard names are anonymous by default. You can delete your account and associated data from the app.
THE WALK IS HAPPENING
You are not the only one walking.
Walking now —
Verified this week —
Fastest 50K this week —
Loading recent witnesses...
Screenshots
See it in action.
One button. That's it.
Every step, live.
You did it.
A certificate worth keeping.
Questions, answered
Before you take the first step.
What is WALK50K?
WALK50K is an iPhone walking challenge. Pick 10,000, 25,000, or 50,000 steps, start the clock, and finish within 24 hours to receive a verifiable digital certificate.
How are my steps verified?
The app reads step counts from Apple Health and sends the completed attempt through server-side checks. Manual step entry is not accepted.
Is location access required?
No. Location is optional and is used only during an active challenge to draw a route line on your certificate. Your raw GPS coordinates are not shown publicly.
What information is public?
A completed certificate can show the challenge, step total, completion date, duration, and verification code. Your leaderboard name stays anonymous unless you choose to show it.
What happens if I do not finish?
The attempt is recorded as DNF and does not receive a verifiable completion certificate. You can try again.
Is WALK50K free?
WALK50K is free to start. Optional challenge attempts and unlimited access are offered through Apple In-App Purchase, with the price shown before purchase.
Can I delete my data?
Yes. Delete your account from Settings in the app to remove your attempts, certificates, route points, entitlements, analytics identity, and account identity.
Is walking 50,000 steps safe?
It is a physically demanding endurance challenge. Stay within your limits, prepare properly, and consult a physician if you are unsure whether it is appropriate for you.
Still have a question? Contact us.
Your turn
Take the first step.
One day. One goal. A result anyone can verify.
Download on the App Store