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Cinder
A Whoop replacement powered by your Apple Watch
Cinder turns the Apple Watch you already wear into a Whoop replacement: recovery and biological age from your HRV, resting heart rate, VO2 max, sleep and movement. It is also a full workout tracker: follow a plan, log sets in seconds, see a muscle map of every session, and replay your runs in 3D with pace. Watch app and Live Activities included, no account, works offline, syncs with Apple Health. Free to download; Premium is $2.99 a month, $17.99 a year, or $30 once.
About Cinder on Product Hunt
“A Whoop replacement powered by your Apple Watch”
Cinder was submitted on Product Hunt and earned 8 upvotes and 1 comments, placing #62 on the daily leaderboard. Cinder turns the Apple Watch you already wear into a Whoop replacement: recovery and biological age from your HRV, resting heart rate, VO2 max, sleep and movement. It is also a full workout tracker: follow a plan, log sets in seconds, see a muscle map of every session, and replay your runs in 3D with pace. Watch app and Live Activities included, no account, works offline, syncs with Apple Health. Free to download; Premium is $2.99 a month, $17.99 a year, or $30 once.
On the analytics side, Cinder competes within Apple Watch, Health & Fitness and Sports — topics that collectively have 100.7k followers on Product Hunt. The dashboard above tracks how Cinder performed against the three products that launched closest to it on the same day.
Who hunted Cinder?
Cinder was hunted by JC. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Cinder including community comment highlights and product details, visit the product overview.
Hey, I'm Jared, a solo dev. I wanted Whoop-style recovery numbers without wearing a second band or paying for another subscription, when my Apple Watch was already collecting HRV, resting heart rate, VO2 max and sleep every day. So I built Cinder.
It resolves those into recovery and a biological age that actually moves, and because it is also my workout tracker, the strain side is real too: plans like Push Pull Legs, sets logged in seconds, a muscle map of every session, and 3D replays of runs with pace lit under the route. Watch app and Live Activities, no account, works offline, everything syncs with Apple Health.
Honest limitation: recovery and age are estimates from Health data, so they are only as good as what your Watch records, and it is iPhone and Watch only.
Free to download; Premium is $2.99 a month, $17.99 a year, or $30 once. If you track with a Watch today, what does your current setup get wrong?