Furolog vs Noctave
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
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 ā 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
Noctave
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Some mornings you wake up tired and have no idea why. Noctave turns the hours you can't remember into something you can actually look at. Set it on your nightstand, tap once, and put the phone down. Through the night Noctave listens for the sound of snoring and quietly marks each moment it hears one. There is nothing to wear, nothing to charge to your chest, no wristband ā just your phone doing the listening. When you wake, the night is already sorted into a report you can read over coffee. ā A morning you can read ā Your report opens on a single snore score for the night, then lets you scroll the whole timeline: when the snoring started, when it peaked, how long the quiet stretches lasted. Tap any marked moment to play back the actual audio, so you are never guessing. Night after night, the Trends view stacks your scores side by side so you can see whether last week's change to your pillow, your room, or your bedtime actually moved anything. ā Sounds to fall asleep to ā Noctave also ships with a library of sleep sounds you can run while you drift off: steady rain, ocean shore, a rocky stream, distant thunder, and shaped noise in pink, brown, green and white, plus fan and other ambient loops. A sleep timer fades them out on its own. For anyone bothered by ringing in the ears at night, the same sounds double as gentle masking ā comfort, not a cure. ā Tuned to your room ā Every bedroom is different, so snore detection has a sensitivity setting. Turn it up in a quiet room, ease it down if a partner, a fan, or street noise is triggering false marks, until the report reflects your night and not the neighborhood. ā What stays on your phone ā All of it. The listening and the sound analysis happen entirely on your device, and your recordings are saved only there ā they are never uploaded to any server and never leave your phone. Noctave asks for the microphone so it can hear you sleep, and that is the only reason. Analytics are anonymous and never include your audio or your identity. ā A note on health ā Noctave is not a medical device. It does not diagnose sleep apnea, snoring disorders, or any other condition, and it is no substitute for professional care. If your sleep or your breathing worries you, please talk to a qualified healthcare provider. ā Plans ā Noctave Plus opens everything up: unlimited history and trends, the full sleep-sound library, and one-tap night sharing. - Weekly, with a 3-day free trial - Annual, for the best value - Or a one-time Lifetime unlock Payment is charged to your Apple ID. Weekly and annual plans renew automatically unless cancelled at least 24 hours before the period ends; manage or cancel anytime in your App Store account settings. The price is always shown before you buy. Privacy Policy: https://snorecast-legal.web.app/privacy Terms of Use: https://snorecast-legal.web.app/terms
Screenshots
Verdict
The clearest difference is iOS requirement: Noctave at 17.0 against Furolog's 27.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Furolog sells 2 in-app purchases, starting at $2.99 per month and Noctave sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly weekly. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.
| Parameter | Furolog | Noctave |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Weekly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, Apple Watch ā better | iPhone |
| Requires iOS | 27.0 | 17.0 ā better |
| Further details ā not scored | ||
| Size | 98 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Nimikko K.K. | Huseyin Yenilmez |
In-app purchases
Furolog
- Furolog Pro7 Days trial$2.991 Month
- Furolog Pro Lifetime$19.99
Noctave
- Weekly3 Days trial$4.997 Days
- Annual$29.991 Year
- Lifetime$59.99









