健やかサウナタイマー12分計 vs Sauna Flow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
健やかサウナタイマー12分計
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赤針1周で1分、黒針1周で12分。 アナログタイプのサウナタイマー(12分計)です。 12分経過するとストップし、タプティック(振動)で通知してくれます。 ポモドーロタイマーとしてもお使いいただけます。 一時停止、リセット機能付き。 ※このAppはApple WatchのApp Storeでのみご利用いただけます。
Sauna Flow
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Time your sauna sessions from your wrist and see your heart rate zone as you go. Sauna Flow is a sauna timer for Apple Watch that keeps a clear record of every session on your iPhone. Set a target time, start on your Apple Watch, and stay focused on the heat. Afterwards, your iPhone shows how the session went and how your routine is building week by week. ■ Round mode • Plan 1 to 5 rounds of sauna, cool-down and rest on your Apple Watch. • Each sauna phase starts when you tap. Cool-down and rest move on automatically, with a haptic at each change. • Your iPhone shows a breakdown for every round. ■ Live heart rate on your Apple Watch • See your current heart rate and zone during the session, with optional alerts when your zone changes. • Zones are based on a max heart rate you choose: the default, an age-based estimate, or your own value. ■ Your sauna routine • A session calendar that marks the days you went. • Current and longest streak, plus a weekly goal you set (1 to 14 sessions). • Optional reminders on the weekdays and at the time you pick. They stay off unless you turn them on. • Session details: duration, average and highest heart rate, time in each zone, plus effort and stability scores for single sessions. • Export your sessions to CSV or share a session card. ■ On your watch face • Add the Sauna Flow complication to open the app in one tap. ■ Sessions you can count on • Each session stays on your Apple Watch until your iPhone confirms it is saved, and is resent automatically. • If the app closes mid-session, the session is recovered and saved as interrupted. • If your Apple Watch gets too hot, it warns you. If it overheats, the session is saved and ended. ■ Apple Health • Sessions and heart rate data are saved to Apple Health. ■ Your language • Korean, English, German, Finnish, Japanese, Dutch and Russian. Choose in the app's settings; your Apple Watch follows. ■ Premium • Your 3 most recent sessions are always available. Sauna Flow Premium, an in-app purchase, unlocks your full session history and full export. ■ What you need • Apple Watch with watchOS 10 or later to record sessions. ■ Please note • Sauna Flow is not a medical device and does not provide medical advice. Heart rate zones are informational estimates, not medical measurements. • If you have a cardiovascular condition or other health concerns, consult your doctor before using a sauna. • Stay hydrated and avoid overheating. Stop your session immediately if you feel unwell. • Apple Watch and iPhone are not designed for extreme heat. Do not expose your device to sauna temperatures beyond its operating range (Apple Watch: 0–35°C / 32–95°F); keep it somewhere safe. Protecting your device is your responsibility.
Screenshots
Verdict
The clearest difference is in-app purchases: 健やかサウナタイマー12分計 at none against Sauna Flow's 1. 健やかサウナタイマー12分計 also leads on iOS requirement (13.0 vs 17.6). On price, 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
Both are free to download. Sauna Flow sells 1 one-off in-app purchase. 健やかサウナタイマー12分計 asks for nothing beyond the download.
健やかサウナタイマー12分計 ships an update every 10 days, Sauna Flow every 3 weeks. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.
| Parameter | 健やかサウナタイマー12分計 | Sauna Flow |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, Apple Watch |
| Requires iOS | 13.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 1 MB | 7 MB |
| Age rating | 4+ | 17+ |
| Developer | Kenji Shimura | Androa Inc. |
In-app purchases
健やかサウナタイマー12分計
No in-app purchases
Sauna Flow
- SaunaFlow Premium$2.99







