Furolog

Furolog turns your Apple Watch into a bathing journal. Step into the water and it starts recording: temperature, heart rate, and every transition between soak, sauna, cold plunge, and rest.

TRACKING

• Automatic water detection with temperature sampled every 5 seconds
• Manual tracking supported with Apple Watch & iPhone
• Continuous heart rate monitoring with smart alerts
• Activity timeline: soak → rest → sauna → cold plunge
• 13 spring types and 12 sauna types recognized

DISCOVER

• Find onsen, sento & sauna nearby on an interactive map
• Track your progress across all 47 prefectures of Japan
• Save favorites and see visit history per location

ANALYTICS (Furolog Pro)

• Temperature, duration & frequency trends
• Heart rate zones, recovery tracking & HR response
• Heat and cold tolerance scores
• Sauna HR climb profile & post-sauna recovery patterns
• Your Perfect Session; data-driven recommendations

PERSONALIZE

• Share cards in three layouts with custom backgrounds
• 7 themes and 9 alternate app icons
• Fully localized in English and Japanese

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Apple Watch use in hot water is at your own risk - Apple does not recommend submerging Apple Watch in hot springs or saunas. We are not responsible for any damage to your device.

• HealthKit access is required for heart rate monitoring.
• Location access is used for session mapping and nearby facility discovery.
• Community data sharing is optional and anonymous. It's used to show facility water temperatures and total visits.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.nimikko.co.jp/en/furolog-privacy-policy