You asked about Fitness
23 people built something like it. 4 are gone.
That is 20% of the ones whose fate we could settle, against 23% across the whole register. 3 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2015-01-01 | YCTempo Live home fitness training powered by computer vision. · tempo.fit | still up |
| 2014-01-01 | Tech-powered women's wellness. · bellabeat.com | still up |
| 2015-06-01 | The sleep fitness company. · eightsleep.com | still up |
| 2016-01-01 | Home boxing gym with motion trackers that compute punches and reps. · joinfightcamp.com | still up |
| 2020-06-01 | YCArketa Everything for your fitness or wellness business. · arketa.com | still up |
| 2020-06-01 | YCQuell Get fit fighting your way through a fantasy world. · playquell.com | acquired |
| 2021-06-01 | YCFitia Automated Meal Planner & Nutrition Tracking · fitia.app | still up |
| 2021-01-01 | YCTilt Bringing the joy of cycling to millions of Indians · tilt.bike | still up |
| 2013-06-01 | YCWeilos Weight loss coaching. · weilos.com | acquired |
| 2015-06-01 | ShapeScale is a personal 3D scanner and fitness tracker that… · shapescale.com | still up |
| 2021-06-01 | The personal coach and companion for cyclists. · breakaway.app | still up |
| 2021-06-01 | Single photo nutrition tracking. · snapcalorie.com | still up |
| 2024-09-01 | YCHYBRD coaching agents for athletes · hybrd.com | still up |
| 2020-06-01 | YCOverfit Human coach for accountability + AI for personalized workouts · overfit.com | gone |
| 2024-01-01 | YCCora AI Fitness Coach · corahealth.app | still up |
| 2024-01-01 | YCAdapted AI physical therapy for athletes · adapted.app | still up |
| 2023-01-01 | YCOverlord AI Accountability Partner · overlord.app | still up |
| 2021-01-01 | Longevity Nutrition Service · eatblueprint.com | gone |
| 2020-01-01 | YCBlok A platform for fitness instructors to build their business and… · blok.fit | gone |
| 2011-01-01 | YCFitFu New projects · fitfu.com | gone |
| 2023-01-01 | YCrex.fit Automating nutrition tracking. · rex.fit | still up |
| 2020-01-01 | App offering AI powered workout plans with anytime access to coaches · fitnessai.com | acquired |
| 2021-06-01 | YCLiv Labs Pelvic floor fitness made easy · livlabsfitness.com | still up |
How this compares
The register re-probes every domain it holds. Some that answered last month stop answering. We send that list — what went quiet, and what it was — once a month. Nothing else.
How this was made. Show HN entries are every post from 2021 to 2023 with at least five points that linked to its own domain; code hosts and free hosting are excluded, because a repository outlives the effort behind it. Product Hunt entries needed 100 votes — a far higher bar, so they are the promoted top slice rather than a like-for-like sample. Both are judged by asking the domain whether it still answers: gone means it no longer resolves, refuses the connection, serves a parking page, or says plainly that it shut down. An HTTP error is not counted as gone — a server answering 404 is one somebody still pays for, and an audit of 25 gone-calls found two such sites alive with only a moved homepage. Y Combinator entries use the status YC publishes itself, which is why only those can say acquired. Squatted domains — a lapsed name now serving somebody else's site — are not detected, so these figures run slightly low.