Your rhythm
See your week take shape.
Your recent activity and weekly progress, together in one simple view.
Cold plunge tracker · iPhone + Apple Watch
Meet your
cold side.
You bring the ritual.
We help you see the bigger picture.
Track cold plunges, ice baths, and cold showers.
From your wrist or a private log on iPhone.
From your wrist.
Into your story.
A little more curious. A little more you.Scroll to explore
Made for Apple Watch
At home on iPhone
Private by design
For the ritual you already love
The moment is yours.
Keep the story, too.
Some days, it’s a quick dip. Others, a familiar routine. PlungeLab brings the details together so you can look back, find your rhythm, and get to know your cold side.
PlungeLab for Apple Watch
Capture. Finish. Saved.
01 / In the moment
A wrist away.
That simple.
Start and finish a session on Apple Watch. Your saved record is ready to revisit on iPhone, so the details don’t disappear when the moment ends.
Capture directly from your wrist
Keep your session history together
Add water temperature on supported Ultra models*
*Temperature capture depends on supported hardware and sensor conditions. Screens show demonstration sessions.
02 / After the water
Every session.
A little more perspective.
A clear home for your cold plunge routine.
Made to make sense at a glance.
Your record
Small moments. All remembered.
Revisit your session history. Log manually whenever your watch stays home.
Actual PlungeLab screens · Demonstration data
03 / The bigger picture Pro
Your data.
Your patterns.
Your kind of insight.
What looks different after your plunge days? Explore personal comparisons using your session history and available Apple Health measurements.
PlungeLab keeps the sample context visible—and tells you when there isn’t enough data yet.
A closer look at InsightsPatterns describe associations in your history. They do not establish causation or provide medical advice.
Demo data
Personal means personal
Your routine.
Your business.
Your health history belongs with you.
Session history and Apple Health analysis stay on your devices during ordinary app use. No PlungeLab account. No advertising profile.
RevenueCat handles limited purchase and technical information for optional Pro access. It does not receive your session or health data.
Our privacy promiseA few cold facts
Good questions.
Clear answers.
Is PlungeLab an ice bath and cold shower app?
Yes. PlungeLab is a cold plunge, ice bath, and cold shower tracker for iPhone and Apple Watch. Keep duration, available water temperature, and notes in a private session history. You can capture cold sessions on a compatible Watch or log them manually on iPhone.
Do I need an Apple Watch?
No. You can log cold plunge sessions manually on iPhone. A compatible Apple Watch adds wrist capture. Water temperature capture is available on supported Ultra models when sensor conditions allow.
What can I track with PlungeLab?
Record cold plunges, cold showers, and open-water sessions from a compatible Apple Watch, or add sessions manually on iPhone. You can also log sauna sessions manually on iPhone; Apple Watch is not intended for sauna heat.
What does PlungeLab Pro add?
Optional Pro access adds personal comparisons using your session history and available Apple Health measurements. Results depend on enough usable observations, including plunge days and rest days. A trial provides access but does not guarantee a pattern will appear.
Does the app recommend a temperature or duration?
No. PlungeLab records your routine and describes observations in your own history. It does not prescribe exposure, establish causation, or provide medical advice.
Where is my data stored?
Session history and Apple Health analysis stay on your devices during ordinary app use. No PlungeLab account is required. RevenueCat processes limited purchase and technical information for Pro and does not receive your session or health data.
Find your way to track
One app.
Your cold routine.
PlungeLab brings cold plunges, ice baths, cold showers, and open-water sessions into one history. Sauna and contrast sessions can be logged manually on iPhone.
Cold plunge & ice bath log
Keep duration, temperature, and notes together—even without a Watch.
Cold shower tracking
Record showers as their own session type, from your wrist or iPhone.
Apple Watch capture
Understand the timer, heart-rate capture, and Ultra sensor boundaries.
Personal patterns
See what Apple Health comparisons can—and cannot—tell you.
A little cold. A little curiosity.
There’s more
to your ritual.
Meet PlungeLab. Your cold plunge companion
for iPhone and Apple Watch.
