Privacy-first fitness tracking
GPS routes, pace, heart rate, splits, training plans, a real social feed — everything you expect from a serious fitness app. Except the part where every step you take is logged on someone else's server.
Coming soon to theApp StoreThe same run, two ways
Your route is rotated by a key only your phone holds, then transposed onto another city's streets. You see your real run. Everyone else sees a cover route somewhere you've never been.
Your actual route, unlocked by your recovery phrase on your device.
A cover route on real streets in a different city — same distance and pace, no location.
How the privacy works
A per-user key on your phone rotates every coordinate before upload. The key is never transmitted.
The Cover Location Engine lays your rotated track onto another city's roads. Distance and pace are preserved; the location is gone.
A 12-word recovery phrase is the only way to read your real routes. Save it once; lose it and your history stays unreadable — by anyone.
No backdoor, by design
Specter derives your encryption key from twelve words shown to you once. We never store it. That's the whole guarantee: even we can't turn your data back into a location — and if a server were ever breached, there's nothing there to read.
Not a privacy toy
Live GPS tracking, pace and splits, heart rate from your strap or Apple Watch, elevation, power, cadence. Run, ride, swim, hike, walk — recorded standalone on Apple Watch and Wear OS, with HRV, resting heart rate, and sleep from Apple Health or Health Connect.
Glanceable
Live Activities keep your time, distance, and pace front and center — on the lock screen and in the Dynamic Island — so you never unlock mid-stride.
Private by default, social by design
Compete on runs, rides, swims and more. Everyone shows up under a randomized alias, racing on cover routes — so the feed, kudos, comments, and leaderboards stay lively without ever exposing a real location.
Everything inside
A real feed, kudos, comments, and following — all on cover routes, never your real location.
Join clubs and compete on challenge and segment leaderboards, all under a randomized alias.
Structured plans and goals to actually move the needle, not just log miles.
Record standalone on Apple Watch and Wear OS — your phone can stay home.
HRV, resting HR, and sleep from Apple Health and Health Connect, on your opt-in.
Your data is yours: export it anytime, or delete your account and have routes crypto-scrubbed.
What we don't do
We don't embed analytics or advertising SDKs of any kind. There's nothing to sell, because exposing your activity was never the plan.