Cold plunge tracker app

Key takeaways

• Tracks duration, water temperature, venue, and a personal rating per session.
• Streaks with grace days, so rest and travel days do not reset progress.
• Handles both cold plunge and sauna, which is what contrast therapy needs.
• Pushes to Strava and writes to Apple Health from the same log.
• Works offline; syncs across your devices through iCloud.

Tracking a cold plunge is not the same as timing one. A timer tells you that this session was three minutes. A tracker tells you that you have plunged 84 times this year, that your average has moved from 55°F to 41°F, and that you are on a 26-day streak. The second one changes behaviour.

What gets recorded

• Duration — from the built-in timer, not from memory.
• Water temperature — in °F or °C, the number that makes durations comparable.
• Venue — picked from nearby gyms, spas, and wellness centres.
• Rating — one to five stars for how the session actually felt.
• Date and time — which is what makes the streak calculation possible.

Streaks that reflect reality

Current streak and all-time best sit on the home screen. Grace days let a travel day or a genuine rest day pass without destroying months of consistency, which is the point at which most streak features cause people to quit.

Cold and heat in one log

Degree Daddy tracks sauna sessions in the same app. If you do contrast therapy, both halves of the session live in one history rather than in two apps that do not know about each other.

Where the data goes

Sessions push to Strava as activities — Strava has no cold plunge type, so Degree Daddy names the activity with your duration and temperature. They also write to Apple Health as workouts, which feeds Whoop, Oura, Garmin, and anything else reading HealthKit.

The underlying data stays yours: stored on the device, synced across your iPhone, iPad, and Apple Watch through your own iCloud account, with no Degree Daddy account to create and no server holding your history.

Offline

Timer, logging, and full history work with no connection. Cold plunges frequently happen in basements, garages, and gyms with no signal; the app does not care.

Frequently asked questions

What is the best way to track cold plunge sessions?

Record duration and water temperature for every session, since duration alone is not comparable across different temperatures. Degree Daddy captures both from a built-in timer, adds venue and a personal rating, and keeps a streak so consistency is visible.

Does the tracker handle sauna sessions too?

Yes. Degree Daddy tracks both cold plunge and sauna in a single history, which is what contrast therapy requires.

Can I see my cold plunge progress over time?

Yes. Full session history keeps every duration, temperature, venue, and rating, along with current and all-time-best streaks, so progression in cold tolerance is visible rather than remembered.

Where is my cold plunge data stored?

On your device, synced across your iPhone, iPad, and Apple Watch through your own iCloud account. There is no Degree Daddy account and no separate server holding your session history.