Cold plunge app for iPhone

Key takeaways

• Degree Daddy is a dedicated cold plunge app for iPhone, iPad, and Apple Watch.
• Timer, temperature logging in °F or °C, venue tagging, and streaks.
• Pushes sessions to Strava as activities — Strava has no cold plunge type of its own.
• Writes every session to Apple Health, so Whoop, Oura, and Garmin pick them up.
• Free during beta. No subscriptions, no ads, no account required.
• Works offline; sessions sync across your devices through iCloud.

General fitness apps do not understand cold exposure. They have no session type for it, nowhere to record water temperature, and no concept of the streak psychology that actually keeps people getting in. Degree Daddy is built specifically for cold plunge and sauna sessions.

What the app does

Timer built for cold, wet hands

One tap from launch to running. A large, readable timer counts your session, and it survives the app being backgrounded or killed. The Apple Watch app lets you start and stop from your wrist, which matters when your phone is not going anywhere near the water.

Temperature logging

Record the water temperature for every session in °F or °C. Most people begin around 55°F and work down over months; without a log, that progression is invisible. Degree Daddy keeps the record so your cold tolerance is something you can actually see.

Streaks that survive real life

Current streak and all-time best on the home screen. Grace days mean a travel day or a rest day does not wipe out months of consistency.

Venue tagging

The app suggests nearby gyms, spas, and wellness centres from your location so you can tag where you plunged. Venues show up in your history and on your share cards.

Strava integration

This is the part other cold plunge apps do not do. Strava has no cold plunge activity type, so plunges are invisible on Strava by default. Degree Daddy creates the activity for you with the duration and temperature in the name — “Cold Plunge - 2:45 at 42F” — and deep links so you can attach your session card as the activity photo.

See how to log a cold plunge on Strava for the full walkthrough.

Apple Health and your wearables

Every session writes to Apple Health as a workout with temperature data. Whoop, Oura, Garmin, Fitbit, and anything else that reads HealthKit picks it up automatically. One integration covers the whole wearable ecosystem, so your recovery data is not stranded in a single app.

What it costs and what it takes

Degree Daddy is free during beta — no subscriptions, no ads, no in-app purchases. There is no account to create: your data lives on your device and syncs between your iPhone, iPad, and Apple Watch through your own iCloud. The timer, logging, and history all work offline.

Frequently asked questions

Is there a cold plunge app for iPhone?

Yes. Degree Daddy is a cold plunge and sauna app for iPhone, iPad, and Apple Watch with a session timer, temperature logging, streak tracking, Strava integration, and Apple Health sync. It is free during beta.

Does the cold plunge app work on Apple Watch?

Yes. Degree Daddy includes a standalone Apple Watch app so you can start and stop sessions from your wrist. Sessions sync back to your iPhone automatically through iCloud.

Can the app post my cold plunge to Strava?

Yes. Connect Strava once and push each session with one tap. The activity is created with your duration and water temperature in the name, since Strava has no cold plunge activity type and no temperature field.

Does it work with Whoop, Oura, or Garmin?

Yes, through Apple Health. Every session is written to Apple Health as a workout, and Whoop, Oura, Garmin, and any other app or device that reads HealthKit picks it up automatically with no extra setup.

Do I need an account?

No. There is no account to create. Your sessions are stored on your device and sync across your own devices through iCloud.

Is there an Android version?

Not currently. Degree Daddy is available on iPhone, iPad, and Apple Watch only.