Sauna Assistant vs RayDay

Turn heat and cold into a ritual. Sauna Assistant guides your home sauna from first round to final rest. Pick a ritual, press start, and let calm audio cues carry you through heat, cold and quiet. Your iPhone stays outside the sauna and plays through your sauna's speakers. NEW: EVERY SAUNA COUNTS - Log a sauna or cold plunge you had without the timer, at a friend's, a spa or before you had the app, and it counts toward your history and streaks - Add date, length, rounds, temperature, humidity, plunges and a note, or just say "Log a sauna session" to Siri - The free web timer at sauna-assistant.com can send a finished session straight to your history - A short, optional setup names your sauna, connects only what's in it (Apple Home, a Saunum heater, a speaker) and has your first ritual waiting on Home - On iPhone Duo, the session clock gets its own side of the screen, and History, Home and Settings spread into two columns GUIDED RITUALS - Follow scripted rituals like Finnish Classic (Löyly) and Evening Wind-down: warm-up, rounds, rests, plunges and a closing ceremony - Hands-free mode moves you from round to rest to plunge on its own - Adjust the next round, skip a plunge or wrap up early without losing your flow - Gentle hydration nudges during rests SAUNA & COLD PLUNGE SESSIONS - Build your own sessions with custom rounds and countdowns - Add cold plunges between rounds, or start a standalone plunge - Track plunge time, water temperature, humidity and room temperature - Follow along on the Lock Screen and Dynamic Island with Live Activities - Widgets: Quick Start a sauna or plunge, see this week's sessions and streak, or repeat your last ritual in one tap - Control sessions with Siri, Bluetooth headphones or Apple Watch IMMERSIVE SOUNDSCAPES - 17 ambient themes including Wood-Fired, Ocean, Zen, Forest Walk, Thunderstorm and Winter - Round-specific audio cues and wellness tips during rests - Switch themes mid-session, or go silent when you want complete focus - Make your own theme: your own ambience and round sounds, any length, plus a gradient, a symbol and a tip - Share a theme as a file, and a friend can preview it and open it straight into their app - Custom themes sync to your iPhone and Apple Watch through iCloud APPLE HOME & HEATERS - Trigger your Apple Home scenes when a session starts, pauses, resumes or ends - Monitor live temperature and humidity from compatible HomeKit sensors - Connect a Saunum LEIL heater over Wi-Fi to see cabin temperature and heater status - Log min, max and average conditions for every round HEART RATE & HEALTH - See live heart rate and zones during sauna and plunge sessions with Apple Watch - Save sessions to Apple Health as Mindful Minutes - Plunges are saved as separate workouts, so you can see how your heart rate responds to cold on its own PROGRESS & ACHIEVEMENTS - Session history with statistics and trends across months - A 12-week activity heatmap and streaks - Achievements for consistency, endurance and variety - Share session cards with friends BUILT FOR SAUNA OWNERS - Separate profiles for multiple saunas: home, cottage, gym - Maintenance journal for stones, heater checks, cleaning and repairs, with costs and dates - Sessions and maintenance side by side on one timeline PRIVATE BY DESIGN - Pay once, own it forever. No subscription, no in-app purchases - No account required - Your history syncs privately through your own iCloud Sauna Assistant is for people who want more than a timer: a calmer, more intentional sauna and cold-plunge ritual.

I built RayDay after years of working indoors left me Vitamin D deficient. The fix wasn't another bottle of pills. It was knowing exactly when the sun was high enough so my body could make Vitamin D the way it always has: naturally, on its own. That's all RayDay does: it tells you your daily sun window, personalized to where you live and your skin type, so you can get Vitamin D the way your body was built to. FEATURES: • D-Window Calculator: know exactly when Vitamin D production is possible today and tomorrow • Live Solar Path: a beautiful animated arc showing the sun's position, sunrise, sunset, and the highlighted D-Window • 7-Day Forecast: see your D-Window for the coming week • Skin Type Personalization: your Fitzpatrick type determines how fast you make Vitamin D • Smart Notifications: get alerted before optimal sun days, plus a heads-up when winter's first D-Window returns • Atmospheric Data: real-time UV index, cloud cover, humidity, and altitude • Phase-Aware Design: app colors shift with the time of day. Dawn, daytime, sunset, and night • Home Screen Widget: a quick glance at your D-Window status • Works Worldwide: accurate for any latitude, including polar regions HOW IT WORKS: RayDay uses NOAA solar position algorithms to calculate the sun's altitude throughout the day. When the sun crosses 35° above the horizon, UVB rays penetrate the atmosphere. That's your D-Window for Vitamin D synthesis. The app factors in your Fitzpatrick skin type to recommend exposure durations that hit your daily IU goal without overexposure. Some features require a paid subscription. DISCLAIMER: RayDay is for educational purposes only. Consult a healthcare professional before changing Vitamin D supplementation or sun exposure habits. --- LEGAL: Privacy Policy: http://www.jakubl.com/privacy.html Terms of Use (EULA): http://www.jakubl.com/terms.html SUPPORT: support@jakubl.com X: @jakublaszczyk