Features
What GritCore does
GritCore is a free fitness app that answers one question: how rare is what you did? Pick a feat, prove it, and see what fraction of people have done the same. Everything else in the app is built around that number.
- RarityHow rare is your achievement?Describe any feat in one sentence and get an estimate of how many people have done it.
- VerificationProve it with the workout you already recordedBack a claim with a workout recorded by your phone or watch. No typing, no screenshots.
- DuelsFitness duels: challenge a friend, settle it with dataChallenge a friend over distance, climbing, time or reps, and stake points on it.
- NationsWhich country is the toughest?Every verified athlete lifts their country. A new season starts every month.
- TrophiesFitness badges that mean something24 badges from bronze to mythic, each one earned by doing something rare.
- CreateCreate a fitness challenge the world can claimInvent a challenge that is not on the list and let anyone in the world claim it.
Who is it for?
Anyone who has done something hard and wants to know where it puts them.
- RunnersFor runners who want to know where they standFor marathoners, ultrarunners and anyone chasing a sub-3: see how rare your runs are, verify them from your watch, and duel your rivals.
- Cyclists and climbersFor riders who count kilometres and metres of climbingFor century riders, Everesters and anyone who counts metres of climbing. Verify the Century Ride and Climb Everest challenges from your rides and duel on elevation.
- Strength and calisthenicsFor anyone who trains with a bar and the floorFor calisthenics and strength athletes: 100 pull-ups in a day, 1,000 push-ups, a 10-minute plank, a 3-minute dead hang. See how rare they are and duel on reps.
- Friends and clubsFor friends who keep score anywayCompete with friends on real fitness: 1v1 duels over distance, climbing, time or reps, a friends leaderboard, and a country table. A free fitness competition app.
Why rarity instead of step counts?
Most fitness apps measure volume: steps, minutes, calories. Volume rewards showing up, which matters, but it cannot tell you whether what you did was special. Rarity can. A marathon, a 100 km run or 100 pull-ups in a day each has an answer to the question "how many people have ever done this?", and GritCore puts that answer next to your name. Read why we built it that way.
So how rare are you, actually?
GritCore is free on iPhone and Android.