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Products that do what NordVital Recovery Calculators does

Free cold plunge, sauna & red light protocol calculators

1
GoPolar▲154
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2025
2
Cold Plunge Calc▲4
Stop guessing your cold plunge time. Free & science-backed.
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3
Sauna▲78
Track heat & cold exposure with your Apple Watch and iPhone
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4
Infrared Sauna Cost Calculator▲1
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GlowPulse▲109
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Cold Plunge Time
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7IB
I built a daily sunlight tracker▲46
I kept trying to explain how important outdoor light is and how most people aren’t getting enough. Eventually I figured that showing is more effective than telling. So we built a free app that uses your Apple Watch or iPhone to automatically track your light exposure throughout the day. It tells you if you’re getting enough, shows you how consistent you are, and rewards habits that support hormone balance. It's in beta on TestFlight, let me know what you think!
2025 · lumehealth.io
8
FORM Swim Goggles + Polar Heart Rate▲67
See your heart rate while you swim 🏊‍♂️🏊‍♀️🥽❤️
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9
FieldCalc HVAC▲8
Offline HVAC calculator: R-454B PT, superheat, duct, load
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10
RECUVR.▲2
Recover Better. Perform Stronger.
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11
ColdLog▲2
Track your cold plunge sessions on Apple Watch
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12
Heliophilia: Daylight Tracker▲7
Track daylight, UV & sunrise. Close the day with gratitude.
Jul 2026 · apps.apple.com
13
SavkHes▲1
Stop guessing. Calculate the exact lighting your room needs.
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14PT
Pulse – the wearable for n=1 habit experiments▲13
Most wearables collect data and hand you a dashboard. Pulse goes a step further: it helps you run experiments with your own habits, and actually shows you what makes a difference. No subscriptions. No locked features. Just tools to test what improves your sleep, focus, or energy.
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Micros Stack Tracker▲5
Optimize your supplement stack, optimize you
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Stamina Calculator▲4
Free stamina, BMI, body fat & health calculators
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1RM Workout Tracker & Log▲4
Workout tracker & 1RM calculator for serious lifters
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Slumber▲7
iOS Social Sleep tracking. Strava for sleep.
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Perla▲10
Period tracking that never sees your data. Fully on-device.
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RHRSpark▲3
Your resting heart rate. Raw. Beautiful. On your wrist.
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21
Brim – Water Tracker▲1
Smart hydration based on your weather, activity & sleep
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FreeWWW Photography Calculator Suite▲2
Plan better shots with 19 essential photography tools
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23UI
Use iPhone's camera as a lux meter▲5
After suffering one too many times from bad jet lag, I read a bunch of circadian rhythm papers and developed a simple app to help fight jet lag. I knew that avoiding devices at night was helpful, but it turns out that getting the right light at specific times of day can help not just with jet lag but overall sleep and well being. How it works: you give the app your sleep goal, and then it coaches you by estimating current melanopic light exposure from the iPhone's camera. I validated this against an $1800 lab-grade light meter and was surprised to find it is absolutely close enough for these…
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24
GlowPulse for iOS▲4
Your iPhone's camera is now a heart-rate sensor
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