Dress for the run,not just the forecast.
Tell Layer the effort of your run. It reads the shifting weather and dials your layers to both.
SEE IT LIVEHOW IT WORKSNative by relationship
One call, not a forecast.
Layer reads the hours you will actually be out and the effort you are running, then names what to wear. An answer you can act on, instead of a dashboard to interpret.
In the layers you already own.
BETAAdd your kit once and the call comes back in your own wardrobe — that vest, that thermal, by name. Kit is in beta while the closet fills out.
It remembers how it felt.
LOGGING LIVELog a run in a tap — too warm, just right, cold for the first mile. Today that is your own record of what worked; using it to tune the next call is what comes next.
See it adapt
One engine. Every forecast.
The same call, re-resolved for the day in front of you.
Why Layer
It reads you, not just the forecast.
Effort-aware, not just weather-aware
Pace lies; effort doesn't. Layer leans on heart rate and relative effort, so an easy long run and a hard tempo get dressed differently.
Ready for the shift
Layer reads the run window — cooling later, wind early, rain entering mid-run — and dresses you for the conditions you'll meet, not just the ones at the door.
One decisive call
No score to interpret, no toggles to weigh. Just what to wear, stated plainly — the way a coach would tell you.
Personalize for your effort
At launchIt learns from how you actually run.
Connect Strava and Layer reads the runs you already log, so the call reflects your effort, not just the forecast. It works from your first run, and sharpens the moment you connect.
What it reads
Your effort intensity, long vs short sessions, elevation, and recovery patterns, from the runs you already log.
What you get
Dressed for how you actually run, and a little sharper every time out.
Read-only
Layer only reads your effort and heart rate to improve your recommendations. We never post.
Whatever the sky does next, you left the house ready for it.
Why it’s different
The free apps dress everyone the same from the forecast. Layer is the only one that learns from how hard you actually ran.
“I built Layer because I was tired of standing at the door, second-guessing a jacket. It should just know.”
— Building Layer in the openJoin 300+ runners getting early access.
Once you’re moving, your body runs 15-20°F warmerthan the air. What you dress for isn’t what the thermometer says.
Common running guidelineFAQ
Good questions.
Weather apps tell you what it is. Layer tells you what it means for you — dressing you for your effort and how the conditions change mid-run. Run feedback can be captured today, while deeper personalization remains planned.
It runs in any browser today. Join early access for the iPhone beta; widgets and Apple Watch are planned for later releases.
The web app runs in any browser today. Join iOS early access and we'll tell you as soon as the native app is ready.
Run with Layer today
Dress for the run, not just the forecast.
Join iOS early access and we'll tell you the moment the native app lands.
No spam. One email, when the iPhone app is ready.