You wouldn’t quit on your friend.
GLIN ("GLIN: You in?") is a free iPhone and Android app for finishing hard, time-boxed challenges with one friend. You pick a challenge like 75 Hard or build your own, invite a partner, each set a stake for quitting, and log progress. Every time one of you logs, the other gets a notification.
Scan with your phone to download GLIN.
Pick your hard thing
Start one of GLIN’s built-in challenges in a tap, or build any challenge you can describe. Each page below has the rules, tips and exactly what you track in the app.
How GLIN works
Pick your hard thing
Start a built-in challenge like 75 Hard in one tap, or make your own with any length, actions and point values.
Invite a friend and set stakes
Send one link. Then you each answer one question: what happens if you quit? Dinner, a tattoo, a donation to a charity you hate.
Log it. They see it.
Every time you log, your partner gets a notification. Miss a day and you both decide: save the streak, or end it.
Why GLIN is not a habit app
Habit apps ask you to slowly become a slightly better version of yourself, forever. Most people don’t want a daily habit for the rest of their life. They want to finish something: 75 days, 30 days alcohol-free, 100 days of real work.
GLIN is built for that kind of sprint. It has a finish line, one friend who sees every log, and a stake you both agreed to. That combination is what gets people through day 23, when the motivation is gone and the habit isn’t automatic yet.
Perfect for anyone who has started 75 Hard four times and finished it zero. Why we built GLIN.
Frequently asked questions
What is GLIN?
GLIN ("GLIN: You in?") is a free iPhone and Android accountability app for doing time-boxed challenges, like 75 Hard or 30 days alcohol-free, with one friend. You both log progress, set stakes for quitting, and get notified whenever the other person logs.
Is GLIN free?
Yes. GLIN is free to download and use.
Is GLIN on Android?
Yes. GLIN is on the App Store for iPhone and on Google Play for Android.
How is GLIN different from a habit tracker?
Habit trackers ask you to keep a habit forever. GLIN is built for sprints with an end date, usually 10 to 100 days, done with one partner who sees your progress and has something at stake with you.
Does my friend need the app?
Yes. Your partner installs GLIN and joins through your invite link, so you both see each other’s progress and get notified when the other logs.
Can I do a challenge alone?
Yes. GLIN works best with a partner, but you can start or continue a challenge on your own.
Updated
You in?
Free to download. Invite a friend and start today.
Scan with your phone to download GLIN.