Degree Daddy vs Furolog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Degree Daddy
Track your cold plunge and sauna sessions with a dedicated timer and logging system. Build streaks, sync your data to Strava and Apple Health, and share your progress with session cards. Designed for serious recovery enthusiasts.
- Cold plunge and sauna timer
- Temperature and rating logging
- Streak tracking with recovery
- Strava and Apple Health sync
- Apple Watch app
- Shareable session cards
- iCloud sync
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Log your cold plunge and sauna sessions. Build streaks. Sync to Strava and Apple Health. Degree Daddy is a cold plunge and sauna tracker for people who take their recovery seriously but don't need a lifestyle brand to do it. Timer, logging, streaks, sync. Works on iPhone, iPad, iPhone Duo, and Apple Watch, in light or dark mode. APPLE WATCH — NEW Start a session from your wrist and leave your phone in the locker. A big timer, live heart rate, and a tap on the wrist at each milestone. Set the temperature with the Digital Crown when you finish, and the session lands in your iPhone history and Apple Health. TIMER One tap to start. A big, readable timer counts your session while encouragement messages keep you in. Switch between cold plunge and sauna mode. Stop early by mistake? Tap Continue and the timer picks up where it stopped. Lock your phone and the timer keeps counting on the Lock Screen and in the Dynamic Island. SAFETY CHECK ALARM An optional alarm for each session type that goes off when your chosen time has passed — 5 minutes for cold plunge and 25 for sauna by default. It does not contact emergency services. LOGGING Save temperature, sauna type (dry, steam, or infrared), a 1–5 star rating, and your location after each session. Tag it Home, a nearby venue — gyms, spas, pools — or your city. Everything stays on your device and syncs across your iCloud devices automatically. STREAKS Consecutive day tracking so you can see if you're actually being consistent. Current streak and all-time best, right on the home screen. Miss a few days? If your last session was within 5 days, the app offers to continue your streak, so travel and rest days don't reset your progress. STRAVA SYNC Strava has no cold plunge or sauna activity type. Degree Daddy fills the gap: push any session to Strava as an activity — "Cold Plunge - 2:45 at 42°F" — with your sauna type, location, and streak in the description. Attach your session card as a photo so your followers know what you're about. APPLE HEALTH Every session writes to Apple Health as a workout, with heart rate when you use Apple Watch. Whoop, Oura, Garmin, and anything else that reads HealthKit will pick it up automatically. SESSION CARDS A clean, branded card with your duration, temperature, streak, and location. Share it or save it. PRIVACY No account required. No ads. Your data lives on your device and syncs through iCloud. Anonymous usage analytics via TelemetryDeck and crash diagnostics via Sentry. WHAT'S INCLUDED - Apple Watch app with live heart rate - Cold plunge timer (30–60°F) - Sauna timer (100–220°F) with dry, steam, and infrared types - Lock Screen and Dynamic Island timer - Safety Check Alarm for cold plunge and sauna - Temperature slider with color feedback - 1–5 star session rating - Automatic GPS location with nearby venue picker - Streak tracking with recovery (within 5 days) - Light, Dark, and Auto appearance - Strava sync - Apple Health sync - Shareable session cards - Celsius/Fahrenheit toggle - iCloud sync across devices - VoiceOver accessible Apple rates Apple Watch Ultra for saunas up to 55°C (130°F); other models aren't rated for sauna heat. You can always time a sauna from your iPhone.
Furolog
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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
Verdict
The clearest difference is in-app purchases: Degree Daddy at none against Furolog's 2. Degree Daddy also leads on iOS requirement (17.0 vs 27.0). Furolog's advantage is update cadence (weekly vs every 2 weeks). On price, 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. Furolog sells 2 in-app purchases, starting at $2.99 per month. Degree Daddy asks for nothing beyond the download.
Degree Daddy ships an update every 2 weeks, Furolog weekly. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.
| Parameter | Degree Daddy | Furolog |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (3 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, Apple Watch |
| Requires iOS | 17.0 — better | 27.0 |
| Further details — not scored | ||
| Size | 11 MB | 98 MB |
| Age rating | 17+ | 4+ |
| Developer | Outergy Group, LLC | Nimikko K.K. |
In-app purchases
Degree Daddy
No in-app purchases
Furolog
- Furolog Pro$2.991 Month
- Furolog Pro Lifetime$19.99









