Illume Health is a simple app that enables you to track your heat and cold exposure sessions on your iPhone and Apple Watch. Key features include:

- Record heat exposure (Finnish Sauna, Infrared Sauna, Steam Sauna, or Hot Bath) and cold exposure (Cold Plunge, Cold Shower, Cryo Chamber, Polar Plunge, Snow Plunge, Outdoor Walk) sessions.

- Track continuous heart rate, heart rate acceleration, average heart rate, minimum & peak heart rate, temperature, duration, humidity and infusions.

- Write and save optional notes about each heat and cold exposure session.

- Get notified when a heat or cold exposure session goal is reached so you can get out of the sauna or cold plunge.

- View heat & cold exposure session summaries on your iPhone and share them with your friends on Instagram, Facebook, WhatsApp and Twitter.

- Analyze beautiful trend charts of key metrics by week, month and year on your iPhone.

- Easily access our Apple Watch app via a watch complication (Note: currently, we only support full-colour complications for Series 4 watches)

- Log your heat and cold exposure sessions as Apple Workouts

IMPORTANT: To prevent your watch from overheating, regularly put your palm on the watch.