Name: Contrast: Sauna & Cold
Author: Holmstad-Group-ApS

One app for your whole recovery ritual: sauna, cold plunge and guided contrast therapy. Built for the wrist, readable through steam.

THREE SESSION TYPES
• Sauna: one giant timer in a deep red heat world, heart rate and temperature kept small on purpose
• Cold Plunge: an ice-blue screen where your exposure time dominates. Enter the water temperature before you start. Your watch has no water sensor, and this app never shows numbers it did not measure
• Contrast Therapy: alternating heat and cold phases with your rounds and phase lengths set before you start (default 3 rounds of 3:00 heat / 1:00 cold)

GUIDED SWITCHES, SILENT BY DESIGN
• 10-second warning before every phase change, a clear vibration pattern you feel through water and steam
• Vibration only, never sound. Saunas are quiet, and you share them
• The screen changes its color world with the phase: deep red heat, ice-blue cold. Read your phase at a glance, even half underwater

ONE BUTTON, ALWAYS A WAY OUT
• One press starts a session, with a short 3-2-1 countdown and no dialogs in your way
• BACK always saves and ends, and a confirmation screen shows exactly what was stored
• Stopping with START offers Resume, Save or Discard, and going back resumes your session safely

YOUR WEEK, IN MINUTES
• Simple bar chart: minutes of heat and minutes of cold per day, with weekly totals
• Stored locally on the watch. No phone, no account, no cloud
• No scores, no "readiness" numbers, just honest minutes

SAVED TO GARMIN CONNECT
• Sessions are saved as activities with temperature graph, heat and cold time, contrast rounds, water temperature (when you entered it) and phase-labelled laps as Connect IQ fields
• If the activity cannot be written, the session is kept on the watch instead and still counts in your weekly stats

One-time purchase. No subscription, no ads. The app sends nothing anywhere on its own; sessions saved as activities sync through Garmin Connect just like any other activity on your watch.

GETTING STARTED
Press START and scroll to Contrast in the activity/app list. On some watches it appears under Connect IQ apps. If it does not show up right away, sync once with the Garmin Connect app.

Supports 46 watch models.