NightWell:Smart Sleep Tracker
B-Tier · SolidSleep smarter with gentle alarms, sleep & snore tracking, and restful insights.
App overview
- Developer
- 株式会社C2
- Pricing
- Free
- Latest update
- Oct 26, 2026
- Audit status
- Audited
About NightWell:Smart Sleep Tracker
Discover deeper, more restful nights with NightWell, your smart sleep companion. Track sleep patterns, monitor snoring, and wake up gently with intelligent alarms designed around your natural rhythm. Gain personalized insights to improve your rest, energy, and focus every day. Calm sounds and mindful tips help you relax before bed and rise refreshed in the morning. ====Features==== NightWell is a multi-functional alarm clock designed to support and improve your sleep. For people who have trouble falling asleep or waking up refreshed, it has a lot of amazing functions to improve their sleep habits. ◆Lull Sounds The healing lull sound will be played to induce peaceful sleep. This is very good for people who suffer from insomnia, who have trouble falling asleep or who need to relax more in sleeping. ◆Smart Alarm This is available for those who always wake up feeling tired, who turn off the alarm only to fall back to sleep or who have trouble waking up in the morning due to hypotension. This monitors body movements using accelerometer in your smartphone and activates the alarm when you're in light sleep. ◆Sleep Report If you use this app every day, you can get your own report analyzing your sleep in various aspects. This report detects your sleep cycle and provide you with the tips to sleep better. ◆Cloud Service This is the service to keep all of your Sleep Log on the dedicated server safely. When you change your device, you can transfer the data from your old device to the new one. This is a free service. ◆Connect NightWell to Health app You can connect NightWell to iOS Health app. By turning ON the connection and log your sleep by NightWell, your bedtime and wake up time are automatically updated to the Health app. ◆Others ・Wake-up task provides strong support for your awakening. ・Fade-In in the alarm sound wakes you up gently. ===="Premium" Subscriptions ==== ●By purchasing the subscription, all Premium features are available for free and all in-app ads are hidden. ●The subscription fee will be charged to your Apple ID. ●Use the free trial (one per Apple ID). ●The subscription fee will be charged within 24 hours before the free trial ends. To avoid charges, cancel the subscription at least 24 hours before the free trial ends. ●The monthly/annual subscription fee will be charged within 24 hours before the current subscription expires. You can cancel automatic renewal at least 24 hours before the expiration date. ●The subscription fee is non-refundable even if there is time remaining until the subscription's expiration. ●To cancel automatic renewal, go to Apple ID settings. ====Terms of Service & Privacy Policy==== Terms of Service : https://jukusui.com/en/terms Privacy Policy : https://jukusui.com/en/privacy ====Support==== jukusui@c2inc.co.jp
Audit results
Key findings followed by the detailed performance signals.
Strengths
- 100% scoring evidence coverage
- Recently maintained
- Available in 5 languages.
Watchouts
- 17 trackers or sensitive permissions detected.
Performance breakdown
Signals from the latest available audit data.
Android
Store rating
Average4.2 from 28,437 ratings
Freshness
ExcellentLast updated Oct 26, 2026
Binary size
Excellent121 MB average install size
Privacy
Critical17 known trackers or sensitive permissions
Languages
Average5 supported languages
Store presentation
Average6 screenshots
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