Comparison

Sauna Record vs Furolog

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sauna Record

Track your sauna sessions, water baths, and rest periods with detailed heart rate and environmental data. Analyze your records to optimize your sauna experience for better health and well-being. Integrates with Apple Watch and HealthKit for comprehensive health monitoring.

Highlights
  • Record sauna, water bath, and rest times
  • Track heart rate and estimated sweat volume
  • Save heart rate data to HealthKit
  • Sauna activity calendar and vibration notifications
  • Record sauna facility details and temperatures
  • Track weight, blood pressure, and BMI
  • Backup and share sauna records
Features
Read full description

Use your Apple Watch to record your sauna. Sauna Record records the time and heart rate for each set of sauna, water bath, and rest, and the estimated sweat volume in the sauna. By entering a sauna based on time and heart rate, you can enter a sauna in a healthy way. A pleasant sauna, water bath, and rest vary depending on the facility, season, and your own condition. The sauna record is used to record the time and heart rate, and finally, the temperature of the sauna room, the temperature of the water bath, the temperature of the outside air, and whether there is a wax or aufguss, etc. are entered. By looking at the recorded information, you will know what kind of sauna and how to enter the sauna is best for you and how to get closer to a better body condition. The following functions are available. Record the time and heart rate of each sauna, water bath, and rest. Save heart rate data to health care Heart rate graphing Sauna activity calendar Vibration notification function for the set time. A function that vibrates to notify the user according to the set heart rate A function that calculates the estimated amount of perspiration based on the set perspiration rate. A function to check the record of all past saunas entered by year, month, and day. Record the facilities and notes of saunas you have entered. Register your favorite saunas. Record whether or not you have been to a sauna with or without a löyly or aufguss. Record your evaluation of each sauna. Record the temperature of each sauna. Record your weight and blood pressure. BMI measurement based on height Record backup function Measured records can be viewed on the iPhone. Records can also be shared as images or text. We hope this application will contribute to the hot bath industry. Notes This app integrates with the HealthKit health app and uses heart rate data. The values in the app are for reference only. Please enjoy the sauna with your physical condition first. Please wear a non-metallic belt, cover the sauna with your hand, or apply a cold towel with water to prevent the AppleWatch from getting hot. Please use Apple Watch in the recommended environment.

About

Furolog

Features
Read full description

Turn every soak into a story you can learn from. Furolog is a bathing journal for onsen, sento, sauna and cold-plunge fans. With a compatible Apple Watch, it detects when you enter the water and records temperature and heart rate, building a timeline of every soak, rest, sauna and cold plunge. Prefer to stay in control? Record manually from Apple Watch or iPhone. Sensor-based water temperature tracking is available on Apple Watch Series 10 or later and Apple Watch Ultra models. TRACK AS YOU BATHE • Automatic water detection on compatible Apple Watch models • Water temperature changes recorded as often as every 5 seconds • Continuous heart rate monitoring with configurable alerts • Manual dip, sauna and temperature controls on Apple Watch and iPhone • A clear activity timeline for every soak, rest, sauna and cold plunge • Tag sessions with 13 onsen water types and 12 sauna types REMEMBER EVERY VISIT • Add ratings, notes and photos to your sessions • Save favorite sessions and facilities • See your complete visit history for each location • Keep your journal in sync across devices with iCloud DISCOVER YOUR NEXT STOP • Find nearby onsen, sento and sauna on an interactive map • Track the prefectures you have visited and aim for all 47 • See community water temperatures and visit totals when available UNDERSTAND YOUR PATTERNS — FUROLOG PRO • Explore temperature, duration and frequency trends • Review heart rate zones, HR response and post-session recovery • Follow heat tolerance, cold tolerance and hot-cold contrast • See your sauna heart rate climb and recovery pattern • Find Your Perfect Session from the routines you rate highest MAKE IT YOURS • Create share cards in three layouts with customizable gradient backgrounds • Add photo backgrounds and choose from 9 alternate app icons with Furolog Pro • Choose from 7 themes • Use Furolog in English or Japanese All recording features on Apple Watch and iPhone are free. Furolog Pro unlocks advanced analytics and additional customization. PRIVACY AND PERMISSIONS Community sharing is optional and can be disabled globally or for individual sessions. Shared records are anonymized and used to provide facility water temperatures and visit totals. Notes, photos, heart rate data, exact timestamps, home addresses and precise locations are never shared. HealthKit access is required to record heart rate. Location access is used for session mapping and nearby facility discovery. Heart rate alerts are informational and are not medical guidance. IMPORTANT Use of Apple Watch in hot water is at your own risk. Apple does not recommend submerging Apple Watch in hot springs or using it in saunas. We are not responsible for damage to your device. 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

Screenshots

Sauna Record4 screens
Furolog4 screens

Verdict

The call

The clearest difference is price: Furolog at Free against Sauna Record's $3.99. Sauna Record's advantage is in-app purchases (none vs 2) and iOS requirement (15.0 vs 27.0). On update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Furolog is free to download; Sauna Record costs $3.99 up front. Furolog sells 2 in-app purchases, starting at $2.99 per month. Sauna Record asks for nothing beyond the download.

UpkeepUpdate frequency

Sauna Record ships an update fortnightly, Furolog weekly. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 7 level
Sauna Record versus Furolog: the parameters behind the verdict, then further details
ParameterSauna RecordFurolog
Price$3.99Free — better
Rating1.0 (1 ratings) — better—
Positive reviews54.5% of reviews—
Number of ratings1 — better—
Update frequencyFortnightlyWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPod, Apple Watch — betteriPhone, Apple Watch
Requires iOS15.0 — better27.0
Further details — not scored
Size90 MB98 MB
Age rating4+4+
Developerkoichi soneharaNimikko K.K.

In-app purchases

None

Sauna Record

No in-app purchases

2 purchases

Furolog

Subscriptions1
  • Furolog Pro$2.991 Month
One-time1
  • Furolog Pro Lifetime$19.99

Questions

Is Sauna Record free?
Sauna Record costs $3.99, with no in-app purchases.
Is Furolog free?
Furolog is free to download, with in-app purchases available.
Do Sauna Record or Furolog have ads?
Neither Sauna Record nor Furolog shows ads.
Which is updated more often, Sauna Record or Furolog?
Sauna Record ships an update fortnightly, and Furolog weekly. Most recently, Sauna Record was updated on November 7, 2026 and Furolog on November 5, 2026.

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