Comparison

Sleeptracker® vs King Koil Smart life

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

Head to head
About

Sleeptracker®

This app requires specific hardware to function, acting as a companion to smart bed monitors. It provides detailed sleep analysis, including sleep stages, heart rate, and respiration, with personalized AI coaching to help improve sleep quality. Features include a smart alarm and integration with Apple Health.

Highlights
  • Detailed sleep stage tracking (REM, light, deep)
  • Respiration and heart rate monitoring
  • AI Sleep Coach with personalized tips
  • Sleep cycle alarm for optimal wake-up
  • Automatic sleep monitoring (no hardware to wear)
  • Integration with Apple Health
Read full description

** THIS APP WILL NOT FUNCTION WITHOUT HARDWARE. This is the companion app for Beautyrest® Sleeptracker® Monitors and Tomorrow® Sleeptracker® Monitors. ONE OF THESE DEVICES IS REQUIRED TO USE THIS APP. ** POWERED BY SLEEPTRACKER®-AI: BETTER SLEEP Learn about your sleep - and improve your sleep - with nothing to wear or charge! This is the companion app for the Beautyrest® Sleeptracker® Monitor and the Tomorrow® Sleeptracker® Monitor which make your bed a smart bed. The Sleeptracker®-AI system is the first cloud-based, non-invasive IoT sleep optimization solution powered by artificial intelligence (AI) and integrated into the smart home. The app provides detailed daily sleep graphs and sleep metrics derived from accurately and continuously monitoring the sleeper’s respiration rate, heart rate, and movements throughout the night. Easy-to-understand sleep graphs visually distinguish between periods when you were in REM sleep, light sleep, deep sleep, or awake. The AI Sleep Coach delivers personalized tips and insights to help you improve your sleep every night. AI SLEEP COACH The AI Sleep Coach, powered by the Sleeptracker®-AI Artificial Intelligence Engine, provides effective, easy-to-implement, personal sleep tips based on a comprehensive analysis of individual sleep patterns. RESPIRATION AND HEART RATE MONITORING The Sleeptracker®-AI system monitors both respiration and heart rate accurately through the night for deeper sleep analysis, with your data displayed as easy to read charts in the app. SLEEP CYCLE ALARM Optionally select white noise that gently fades away after you've fallen asleep, then set a sleep cycle alarm that will help you Wake Up at the Optimal Time™ in your sleep cycle so you wake up refreshed and more energized. AUTOMATIC SLEEP MONITORING If you choose to record your sleep automatically, there’s nothing to do and nothing to wear. Optionally receive a notification in the morning when your sleep results are available and a daily email with your sleep summary and AI Coach insights. APPLE HEALTH Share your Sleeptracker®-AI sleep data to the Apple Health app. The Sleeptracker®-AI system reports the following sleep-related statistics each night: - REM sleep, light sleep, deep sleep, awake time - Time at which you fell asleep and woke up - Number of times awoken during the night - Continuous respiration rate - Continuous heart rate - Sleep quality metric (scale of 0-100) - Sleep efficiency (time spent in bed vs. total time asleep) - Time it took you to fall asleep This is also the companion app for Sleeptracker® smart beds by Simmons® and Serta® including Beautyrest® SmartMotion™ and Serta® SleepGPS™ adjustable bases. Sleeptracker® Premium Advanced Subscription Available: 1-year subscription - $29.99 (automatically renewed until canceled) 1-month Free Trial A subscription to Sleeptracker® Premium Advanced gives you unlimited cloud-based sleep data storage, personalized sleep coaching, and advanced sleep analysis reports. Subscription automatic-renewal feature: Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew unless auto-renew is turned off at least 24-hours before the end of your current period. Your iTunes account will be automatically charged $29.99 for renewal within 24-hours prior to the end of the current period. You can manage your subscription or turn off auto-renewal by visiting your iTunes Account Settings after purchase. Current subscriptions may not be canceled during the active subscription period. Any unused portion of the 1-month free trial period will be forfeited when you purchase a subscription. Prices shown are in U.S. dollars. Terms of Use: https://www.fullpower.com/home/terms-of-use Privacy Policy: https://www.fullpower.com/home/privacy-policy

About

King Koil Smart life

This app controls a smart mattress system that adapts to your body and movement. It offers a massaging relaxation mode, dual firmness controls, and tracks your sleep quality. Wake up gently with its smart alarm feature.

Highlights
  • Body sensing technology
  • Massaging relaxation mode
  • Dual firmness controls
  • Sleep quality data
  • Smart alarm
Features
Read full description

King Koil has developed a sleep system that adjusts to your unique body and continuously adapts to the way you move. The SmartLife mattress features patented body sensing technology, a massaging relaxation mode, and dual firmness controls. Our intuitive app makes it easy to operate all of these features. The SmartLife app also provides data on the quality of sleep you’re getting and a smart alarm to gently ease you out of bed in the morning. Experience the revolution of sleep today with SmartLife, and enjoy a better tomorrow.

Screenshots

Sleeptracker®4 screens
King Koil Smart life4 screens

Verdict

The call

The clearest difference is rating: Sleeptracker® at 4.5 against King Koil Smart life's 2.0. Sleeptracker® also leads on review sentiment (45% vs 9%) and update cadence (every 6 weeks vs every 18 months). King Koil Smart life's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 16.6). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Sleeptracker® sells 1 in-app purchase, starting at $29.99 per year. King Koil Smart life asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Sleeptracker® holds the better App Store score, 4.5 against 2.0. That said, the two scores are not equally well evidenced: Sleeptracker® has 12K ratings behind it against 59, so its average is the more settled of the two. Written reviews point the same way: 45% of Sleeptracker®'s written reviews are positive against 9% of King Koil Smart life's.

UpkeepUpdate frequency

Sleeptracker® ships an update every 6 weeks, King Koil Smart life every 18 months. The most recent releases landed on September 26, 2026 and August 10, 2026 respectively.

Scorecard7 real differences · 3 level
Sleeptracker® versus King Koil Smart life: the parameters behind the verdict, then further details
ParameterSleeptracker®King Koil Smart life
PriceFreeFree
Rating4.5 (12K ratings) — better2.0 (59 ratings)
Positive reviews44.6% of reviews — better9.4% of reviews
Number of ratings12K — better59
Update frequencyEvery 6 weeks — betterEvery 18 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS16.612.0 — better
Further details — not scored
Size85 MB83 MB
Age rating4+4+
DeveloperFullpower®iOBED, Inc.

Customer experience

Sleeptracker®

All ratings11,499 ratings
Positive88.4%
Neutral4.4%
Negative7.2%
Written reviews112 reviews
Positive44.6%
Neutral6.3%
Negative49.1%

King Koil Smart life

All ratings59 ratings
Positive18.6%
Neutral6.8%
Negative74.6%
Written reviews32 reviews
Positive9.4%
Neutral3.1%
Negative87.5%

Bugs and requests

Sleeptracker®

Reported bugs

3 issues
  • Alarm issues (playing randomly, incorrect times)
  • Inconsistent sleep tracking (missing data, incorrect readings)
  • Connectivity problems (frequent disconnections)

Requested features

4 requests
  • Snore tracking
  • Ability to edit sleep data
  • Better integration with health apps
  • Multiple alarm/sleep schedule options

King Koil Smart life

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Sleeptracker®

Subscriptions1
  • Sleeptracker Premium Service1 Month trial$29.991 Year
None

King Koil Smart life

No in-app purchases

Questions

Is Sleeptracker® free?
Sleeptracker® is free to download, with in-app purchases available.
Is King Koil Smart life free?
King Koil Smart life is free to download, with no in-app purchases.
Which has better reviews, Sleeptracker® or King Koil Smart life?
Sleeptracker® is rated higher. Sleeptracker® averages 4.5 out of 5 from 12K ratings, while King Koil Smart life averages 2.0 from 59 ratings.
Do Sleeptracker® or King Koil Smart life have ads?
Neither Sleeptracker® nor King Koil Smart life shows ads.
Which is updated more often, Sleeptracker® or King Koil Smart life?
Sleeptracker® ships an update every 6 weeks, and King Koil Smart life every 18 months. Most recently, Sleeptracker® was updated on September 26, 2026 and King Koil Smart life on August 10, 2026.

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