Sauna Record vs CryoZest
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
CryoZest
Track hot and cold therapy sessions like sauna, yoga, and cold plunges. Seamlessly integrate with the Health app to monitor progress and uncover patterns in your wellness journey. Log details like duration, temperature, and intensity for data-driven insights.
- Log hot and cold therapy sessions
- Track duration, temperature, and intensity
- View session history and trends
- Integrate with Health app via HealthKit/CareKit
- Monitor associated health metrics
- Data-driven wellness insights
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CryoZest is your ultimate companion for tracking hot and cold therapies. Now, with the integration of Health app using HealthKit and CareKit APIs, you can seamlessly manage your wellness routine in one place. Whether it's sauna sessions, hot yoga, cold showers, or cold plunges, CryoZest offers an intuitive and streamlined way to keep track of your routines. You can log your sessions and, with our integration with the Health app, connect them to a broader spectrum of your health data. By doing so, you can uncover patterns, monitor progress, and make data-driven decisions about your wellness journey. With CryoZest, you can: - Record details about each session, including duration, temperature, and perceived intensity. - View your session history at a glance, with easy-to-read visuals and summaries. - Analyze your trends over time to see how your habits are improving your wellbeing. - Monitor associated health metrics to understand the full impact of your hot and cold therapies, with the added benefit of synchronization with your Health app data. Embrace a new level of insight into your hot and cold therapies with CryoZest. Download now to enhance your wellness routine, with the added advantage of integration with your Health app!
Screenshots
Verdict
The clearest difference is price: CryoZest at Free against Sauna Record's $3.99. CryoZest also leads on rating (4.3 vs 1.0) and update cadence (every 2 days vs fortnightly). On review sentiment, ads, in-app purchases 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
CryoZest is free to download; Sauna Record costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
CryoZest holds the better App Store score, 4.3 against 1.0. That said, the two scores are not equally well evidenced: CryoZest has 20 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 57% of Sauna Record's written reviews are positive against 56% of CryoZest's, so the app with the better star average is not the one people write more warmly about.
Sauna Record ships an update fortnightly, CryoZest every 2 days. The most recent releases landed on September 22, 2026 and June 10, 2026 respectively.
| Parameter | Sauna Record | CryoZest |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 1.0 (1 ratings) | 4.3 (20 ratings) — better |
| Positive reviews | 57.1% of reviews — better | 55.6% of reviews |
| Number of ratings | 1 | 20 — better |
| Update frequency | Fortnightly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.2 |
| Further details — not scored | ||
| Size | 90 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | koichi sonehara | OKRA Labs LLC |
Customer experience
Sauna Record
CryoZest
In-app purchases
Sauna Record
No in-app purchases
CryoZest
No in-app purchases









