Contrast: Cold Plunge & Sauna

Contrast is the simple, one-tap way to log your sauna and cold plunge sessions. No subscription, no account, no wearable required.

Track time and temperature for every hot and cold round, watch your streak grow, and see your progress at a glance. Built for cold-water immersion, contrast bathing, and post-sauna recovery.

FEATURES
- One-tap logging of hot and cold rounds with a live timer
- Record time and temperature per round, in Celsius or Fahrenheit
- History calendar and detailed session view
- Stats: totals, averages, longest session, and current streak
- Local reminders to keep your routine going
- Fully offline. Your data stays on your device and is never uploaded
- One-time purchase. Every feature unlocked forever, with no subscription

Whether you call it a cold plunge, an ice bath, or a contrast bath, Contrast keeps the record so you can focus on the practice.

Note: Cold-water immersion can carry health risks. Consult a physician if you have any health concerns.