Comparison

NightWell vs 睡眠アプリ 睡眠の質を計測・分析:sleepanalysis

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

NightWell

This smart sleep companion helps you track sleep patterns, monitor snoring, and wake up gently with intelligent alarms. Gain personalized insights to improve rest, energy, and focus, with calming sounds and mindful tips for relaxation before bed.

Highlights
  • Sleep pattern tracking
  • Snoring monitoring
  • Intelligent smart alarm
  • Personalized sleep insights
  • Calming lull sounds
  • Sleep reports
  • Cloud backup
Features
Read full description

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

About

睡眠アプリ 睡眠の質を計測・分析:sleepanalysis

This app tracks and analyzes your sleep patterns to help you understand and improve sleep quality. It features a smart alarm that wakes you during light sleep and provides detailed historical data for performance optimization. All features are completely free to use.

Highlights
  • Accurate daily sleep analysis
  • Smart alarm with REM sleep detection
  • Weekly, monthly, and yearly sleep history
  • Pre-set weekly alarm scheduling
  • Bedtime reminders
  • Easy-to-use smartphone integration
Features
Read full description

Airweave Sleep Analysis is back and better than ever before! Provided by the Japanese mattress maker firm Airweave, Airweave Sleep Analysis is the number one free sleep analysis and smart alarm application that has been tried and trusted by top athletes. Airweave Sleep Analysis measures, manages, and compares your daily sleeping patterns. By converting your sleep quality into data, the app helps you understand and improve the quality of your sleep and maximizes your everyday performance. Airweave Sleep Analysis utilizes the data obtained from Airweave’s long-standing sleep research with top athletes, students of the renowned sports-training facility IMG Academy, and Airweave users, together with cutting-edge technology for measuring and analyzing individual body information. ACCURATE DAILY SLEEP ANALYSIS Identifies and visualizes your sleep quality by recording your pre-sleep habits, body movements during sleep, and wake-up times SMART ALARM A comfortable alarm that wakes you up during your most shallow sleep phase (REM sleep) SLEEP HISTORY Weekly, monthly, and yearly data to compare and improve your sleep quality SCHEDULING Allows pre-setting a weekly alarm schedule, eliminating the need for daily alarm setting BEDTIME REMINDERS Push notifications that encourage you to sleep at the ideal time All features are COMPLETELY FREE! EASY TO USE All you need to do is put your smartphone with the sleep app running close to your pillow and go to sleep. It will automatically measure and diagnose your sleep state by detecting your body movements during sleep. STEP-BY-STEP DIRECTIONS Launch the Airweave Sleep Analysis App Register as a member (Free-of-charge) Set your alarm schedule Tap the Start button Check what you have done in the two hours before the alarm time. Put the app on your bedside table and go to sleep When the alarm goes off and you wake up, please check your sleep data. Accumulate and compare your daily data to optimize your life cycle. By registering as a member, you have access to a more accurate sleep diagnosis, various analysis graphs, and data backup. Like sleep apps, the app consumes battery power while in use. Please connect to the power cable and charge the battery while using it. [Recommended environment] iOS 13.0 or later iPhone 7 or later iPad and iPod touch are not supported. "Recommended for the following people Those who want to maximize their everyday performance Those who are looking for a free alarm app Those who are looking for an alarm app other than the default clock app Those who want to record and analyze their sleep data. Those who want to change the alarm sound to music stored in the iPhone Those who are concerned about the quality of their sleep. Those who want to see the number of times they wake up in the middle of the night Those want to set the alarm to go off in the most shallow phase of sleep Those who want to know the recommended information about Airweave.

Screenshots

NightWell4 screens
睡眠アプリ 睡眠の質を計測・分析:sleepanalysis4 screens

Verdict

The call

The clearest difference is rating: NightWell at 4.6 against 睡眠アプリ 睡眠の質を計測・分析:sleepanalysis's 3.0. NightWell also leads on review sentiment (60% vs 31%) and ratings volume (16 vs 1). 睡眠アプリ 睡眠の質を計測・分析:sleepanalysis's advantage is in-app purchases (none vs 10) and ads (none vs shown). On price, update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. NightWell sells 10 in-app purchases, starting at $9.99 per month. 睡眠アプリ 睡眠の質を計測・分析:sleepanalysis asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

NightWell holds the better App Store score, 4.6 against 3.0. That said, the two scores are not equally well evidenced: NightWell has 16 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 60% of NightWell's written reviews are positive against 31% of 睡眠アプリ 睡眠の質を計測・分析:sleepanalysis's.

UpkeepUpdate frequency

NightWell ships an update every 3 weeks, 睡眠アプリ 睡眠の質を計測・分析:sleepanalysis every 5 weeks. The most recent releases landed on October 15, 2026 and October 9, 2026 respectively.

Scorecard7 real differences · 3 level
NightWell versus 睡眠アプリ 睡眠の質を計測・分析:sleepanalysis: the parameters behind the verdict, then further details
ParameterNightWell睡眠アプリ 睡眠の質を計測・分析:sleepanalysis
PriceFreeFree
Rating4.6 (16 ratings) — better3.0 (1 ratings)
Positive reviews59.7% of reviews — better30.6% of reviews
Number of ratings16 — better1
Update frequencyEvery 3 weeks — betterEvery 5 weeks
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size125 MB67 MB
Age rating4+12+
Developer株式会社C2AIRWEAVE INC.

Customer experience

NightWell

All ratings16 ratings
Positive87.5%
Neutral6.3%
Negative6.3%
Written reviews62 reviews
Positive59.7%
Neutral17.7%
Negative22.6%

睡眠アプリ 睡眠の質を計測・分析:sleepanalysis

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%
Written reviews36 reviews
Positive30.6%
Neutral13.9%
Negative55.6%

In-app purchases

10 purchases

NightWell

Subscriptions2
  • Monthly7 Days trial$9.991 Month
  • Yearly7 Days trial$39.991 Year
One-time8
  • Alarm sound "Minute Waltz"$0.99
  • Lull Sound "Berceuse Op. 57"$0.99
  • Alarm sound "Time for relax"$0.99
Show 5 more
  • Alarm sound "Slumber"$0.99
  • Alarm sound "Piscatio"$0.99
  • Lull Sound "Kagura"$0.99
  • Alarm sound "Peer Gynt Morgenstemning Op.46 [w/ES]"$0.99
  • Alarm sound "Nocturne No.2"$0.99
None

睡眠アプリ 睡眠の質を計測・分析:sleepanalysis

No in-app purchases

Questions

Is NightWell free?
NightWell is free to download, with in-app purchases available.
Is 睡眠アプリ 睡眠の質を計測・分析:sleepanalysis free?
睡眠アプリ 睡眠の質を計測・分析:sleepanalysis is free to download, with no in-app purchases.
Which has better reviews, NightWell or 睡眠アプリ 睡眠の質を計測・分析:sleepanalysis?
NightWell is rated higher. NightWell averages 4.6 out of 5 from 16 ratings, while 睡眠アプリ 睡眠の質を計測・分析:sleepanalysis averages 3.0 from 1 ratings.
Do NightWell or 睡眠アプリ 睡眠の質を計測・分析:sleepanalysis have ads?
NightWell shows ads; 睡眠アプリ 睡眠の質を計測・分析:sleepanalysis does not.
Which is updated more often, NightWell or 睡眠アプリ 睡眠の質を計測・分析:sleepanalysis?
NightWell ships an update every 3 weeks, and 睡眠アプリ 睡眠の質を計測・分析:sleepanalysis every 5 weeks. Most recently, NightWell was updated on October 15, 2026 and 睡眠アプリ 睡眠の質を計測・分析:sleepanalysis on October 9, 2026.

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