Sauna Record vs 8weeks.ai Sync Hub
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.
8weeks.ai Sync Hub
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8weeks.ai Sync Hubは、iPhoneやApple Watchに蓄積されたHealthKitデータを一元管理し、活用するためのヘルスデータハブアプリです。 日々の歩数、心拍数、睡眠、ワークアウトなど、HealthKitに記録されたさまざまな健康データを、わかりやすく整理・集計し、CSVファイルとして書き出すことができます。 ■ 主な機能 ・HealthKitデータの閲覧・集計 対応するHealthKitカテゴリのデータを自動で集計し、期間やデータ種別ごとに確認できます。 ・CSVエクスポート 集計したデータをCSVファイルとして出力できます。出力期間や単位の選択が可能で、BOM付きUTF-8形式に対応しているため、Excelでもそのまま開けます。標準のiOS共有シートからメールやクラウドストレージへ簡単に共有できます。 ・8weeks.aiとのデータ連携 ヘルスケアデータを8weeks.aiと連携できます。CSVエクスポートに加えて、連携先サービスでも健康データを活用できます。 ・クラウドバックアップ・復元 Apple IDまたはGoogleアカウントでサインインすることで、アプリの設定やローカルデータをクラウド(Firebase)に安全にバックアップできます。機種変更時もワンタップで復元が可能です。 ・かんたんセットアップ 初回起動時のオンボーディングで、HealthKitへのアクセス許可設定をわかりやすくガイドします。必要なデータカテゴリだけを選んで許可できます。 ■ こんな方におすすめ ・自分の健康データをCSVで管理・分析したい方 ・HealthKitのデータを外部サービスや表計算ソフトで活用したい方 ・健康データのバックアップを安全に取っておきたい方 ■ プライバシーとセキュリティ 8weeks.ai Sync Hubは、お客様の健康データを大切に扱います。HealthKitデータの読み取りはすべてユーザーの明示的な許可のもとで行われ、データはお使いのデバイス上でローカルに処理されます。バックアップ機能を利用する場合のみ、暗号化された状態でクラウドに保存されます。
Screenshots
Verdict
The clearest difference is price: 8weeks.ai Sync Hub at Free against Sauna Record's $3.99. On update cadence, 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
8weeks.ai Sync Hub is free to download; Sauna Record costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Sauna Record ships an update fortnightly, 8weeks.ai Sync Hub every 2 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | Sauna Record | 8weeks.ai Sync Hub |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 54.5% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Fortnightly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 90 MB | 79 MB |
| Age rating | 4+ | 4+ |
| Developer | koichi sonehara | NEXTRAVELER INC. |
In-app purchases
Sauna Record
No in-app purchases
8weeks.ai Sync Hub
No in-app purchases









