SUMMER
LOCK-IN.

21 days. Your workout. Your proof. We show up together.

App setup required

Almost ready! The challenge organiser needs to connect the shared database before members can sign in. See SETUP.md in the downloaded project.

New here? Enter your invited email address to receive a one-time joining link. Returning on this device? You should stay signed in automatically.

Email address

Open the sign-in link in the same browser you plan to use for the challenge, then add the app to your Home Screen.

You are signed in. Choose the name your friends will see. Your verified email must be on the organiser’s invite list.

Your display name

Optional

Add Summer Lock-In to your Home Screen so you can check in every day.

Let's go!

0Your days

0%Complete

0Friends

A green square means your photo/video check-in was submitted successfully.

Take a live picture or record a video up to 20 seconds showing yourself in a workout environment. No gallery upload needed.

Photo or 20-second video

Only submitted captures count as completed. Your upload time is saved by the server.

Everyone in the private challenge can view submitted proof. Please avoid capturing other people without their permission.

Live

Loading friends…

Member-submitted photos and short videos. Tap a video to play.

Export a personalised PNG summary of your completed days.

SUMMER LOCK-IN 2026 • Show up. Capture it. Done.
Camera and sync require internet and a secure HTTPS website.