Comparison

Sleep Timer vs Sleepzy

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

Head to head
About

Sleep Timer

This app helps you wake up feeling refreshed by tracking your sleep cycles. It calculates the optimal time to go to bed or wake up based on your sleep patterns and allows you to set an alarm for the ideal moment.

Highlights
  • Sleep cycle tracking
  • Optimal wake-up time calculation
  • Bedtime recommendations
  • One-click alarm setting
  • Growth Bundle integration
Read full description

*** THE #1 APP FOR SLEEP TRACKING *** Sleep is a sequence of several cycles, each lasting 1.5 hours. A good night sleep consists of 5-6 complete cycles. If you wake up in the middle of the cycle, you feel groggy and exhausted. Therefore, to feel refreshed and alert, it is important to wake up between cycles. Sleep Timer counts sleep cycles, taking into account the average time needed for a person to fall asleep (it is 14 minutes). With this app, you can find out when to go to bed, if you need to wake up at a certain time or when to wake up if you go to sleep right now. Then, in just one click, you can set up an alarm to wake up at the right time. --- Sleep Timer is also part of the Growth Bundle. Get discounted premium access to a bundle of the most popular productivity and lifestyle apps. See more under the Growth Bundle section in the app's settings. Sleep Timer contains subscription plans for its own Premium and the Growth Bundle - both of which are optional annual subscriptions. Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, for the chosen plan's price. Subscriptions may be managed and auto-renewal may be turned off by going to your iTunes/App Store Account Settings after purchase. Read our full Privacy Policy and Terms of Service here: Privacy Policy: https://growthbundle.com/privacy-policy Terms of Service: https://growthbundle.com/terms-of-service

About

Sleepzy

This smart alarm clock tracks sleep patterns, wakes you gently during your lightest sleep phase, and analyzes sleep quality. It provides insights into sleep debt, offers relaxing sounds to help you unwind, and can sync with health apps for comprehensive data tracking.

Highlights
  • Smart alarm wakes you in lightest sleep phase
  • Sleep pattern tracking and analysis
  • Sleep debt and quality monitoring
  • Relaxing sounds and AI music for sleep
  • Weekly sleep statistics and insights
  • Snore detection (Premium feature)
  • Syncs with Apple Health
Features
Read full description

Sleepzy is a smart alarm clock that tracks your sleep patterns, wakes you up during the lightest sleep phase in a way that feels natural to get up, analyzes your sleep quality, and notifies you if you have a sleep debt. It's an essential app for everyone, whether you're a morning person or a night owl. IMPROVE YOUR AWAKENING: - Wake up rested at the optimal time - don't feel groggy anymore! - Sync with Apple Music to use your favorite tunes as an alarm - set your mood for the day TRACK & ANALYZE YOUR SLEEP: - Set your Sleep Goal and track Sleep Debt - stay motivated to get enough hours of sleep - Track your sleep patterns - focus on sleeping not only long enough but well enough - Know your Sleep Quality - make adjustments to your daily habits to get your quality % up - Get helpful weekly stats UNWIND YOUR MIND BEFORE SLEEP: - Fall asleep to relaxing sounds & classical melodies - Listen to Dream Radio: doze off to AI-generated music and hypnotic visuals GET HELPFUL INSIGHTS: - Receive daily personal sleep advice and explore worldwide sleep statistics with "Insights" - Get Weather Forecast at your location in the morning to plan the day easily KEEP YOUR SLEEP DATA SYNCED & SECURED: - Sync your data with the Apple Health app - Backup your sleep data and restore it whenever you need it Sleepzy + Apple Watch = More Fun Monitor your sleep with Apple Watch - the clear and easy-to-use interface will help you overview what was going on while you're asleep Go Premium to: - Dive deep into insights with advanced stats and track your progress over time - Find out whether you snore - Listen to a wider variety of relaxing sounds & classical music - Use special breathing technics to calm your mind - Unlock all sleep insights - Get rid of ads Please note that movement and noise from pets or a partner may impact results. Start waking up stress-free at the best moment possible. Revolutionize your mornings! * Subscription payments will be charged to your iTunes account at confirmation of your purchase and upon commencement of each renewal term. Subscription with a free trial period will automatically renew to a paid subscription. You can cancel your subscription or free trial in the iTunes settings at least 24-hours before the end of the free trial period. The cancellation will take effect the day after the last day of the current subscription period and you will be downgraded to the free service. * Please note: any unused portion of a free trial period (if offered) will be forfeited when you purchase a premium subscription during the free trial period. For complete access to all features, you will need to allow access to the following: * Microphone – so the app can analyze your sleep and record your night sounds. * Notifications – so the alarm will ring. * Media Library Access – so you can set your own music as an alarm sound. * Health App – so you can export your data to Apple Health. * Location – so you can receive the weather forecast for your area. Privacy Policy: https://support.bendingspoons.com/privacy.html?app=1064910141 Terms of service: https://support.bendingspoons.com/tos.html?app=1064910141 Contact us: sleepzy@bendingspoons.com

Screenshots

Sleep Timer4 screens
Sleepzy4 screens

Verdict

The call

The clearest difference is monetization model: Sleepzy at freemium against Sleep Timer's subscription. Sleepzy also leads on ratings volume (22K vs 1.5K) and device support (4 vs 2). Sleep Timer's advantage is ads (none vs shown) and rating (4.7 vs 4.3). On price, update cadence and in-app purchases 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. Sleep Timer sells 10 in-app purchases, starting at $1.99 per 7 days and Sleepzy sells 13 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Sleep Timer holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Sleepzy has 22K ratings behind it against 1.5K, so its average is the more settled of the two. Written reviews point the same way: 57% of Sleep Timer's written reviews are positive against 37% of Sleepzy's.

UpkeepUpdate frequency

Sleep Timer ships an update every 2 months, Sleepzy monthly. Both last shipped on November 1, 2026.

Scorecard7 real differences · 3 level
Sleep Timer versus Sleepzy: the parameters behind the verdict, then further details
ParameterSleep TimerSleepzy
PriceFreeFree
Rating4.7 (1.5K ratings) — better4.3 (22K ratings)
Positive reviews56.7% of reviews — better37.0% of reviews
Number of ratings1.5K22K — better
Update frequencyEvery 2 monthsMonthly — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationSubscriptionFreemium — better
DevicesiPhone, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS15.013.0 — better
Further details — not scored
Size84 MB270 MB
Age rating4+17+
DeveloperKodeon, Inc.Mosaic S.r.l.

Customer experience

Sleep Timer

All ratings1,457 ratings
Positive92.7%
Neutral3.0%
Negative4.4%
Written reviews157 reviews
Positive56.7%
Neutral12.7%
Negative30.6%

Sleepzy

All ratings22,378 ratings
Positive81.7%
Neutral6.6%
Negative11.7%
Written reviews632 reviews
Positive37.0%
Neutral13.1%
Negative49.8%

Bugs and requests

Sleep Timer

Not enough reviews yet to summarise bugs or requests.

Sleepzy

Reported bugs

3 issues
  • Alarm not going off as scheduled
  • App crashing or freezing
  • Inconsistent data recording

Requested features

4 requests
  • Integration with other sleep/health apps
  • More detailed sleep analysis and insights
  • Ability to adjust alarm time range
  • Nap tracking and alarm

In-app purchases

10 purchases

Sleep Timer

Subscriptions9
  • Week$1.997 Days
  • Week$2.997 Days
  • Month$5.991 Month
Show 6 more
  • Year$6.991 Year
  • Year$14.491 Year
  • Year3 Days trial$17.991 Year
  • Year3 Days trial$29.991 Year
  • Sleep Timer Premium1 Year trial2 variants$29.991 Year
  • Growth Bundle: Yearly1 Year trial$99.991 Year
One-time1
  • Upgrade to Premium$2.99
13 purchases

Sleepzy

Subscriptions13
  • Sleepzy Premium 1 Week7 Days trial$3.997 Days
  • Sleepzy Premium 1 Month7 Days trial$4.991 Month
  • Sleepzy Premium 1 Week3 Days trial$4.997 Days
Show 10 more
  • Sleepzy Pro$4.997 Days
  • Sleepzy Pro7 Days trial$4.997 Days
  • Sleepzy Premium 1 Month7 Days trial$6.991 Month
  • Sleepzy Premium 1 Month$6.991 Month
  • Sleepzy Pro7 Days trial$7.997 Days
  • Sleepzy Premium 3 Months$9.993 Months
  • Sleepzy Premium 1 Year$14.991 Year
  • Sleepzy Premium 1 Year7 Days trial$29.991 Year
  • Sleepzy Premium 1 Year$69.991 Year
  • Sleepzy Premium 1 Year7 Days trial$89.991 Year

Questions

Is Sleep Timer free?
Sleep Timer is free to download, with in-app purchases available.
Is Sleepzy free?
Sleepzy is free to download, with in-app purchases available.
Which has better reviews, Sleep Timer or Sleepzy?
Sleep Timer is rated higher. Sleep Timer averages 4.7 out of 5 from 1.5K ratings, while Sleepzy averages 4.3 from 22K ratings.
Do Sleep Timer or Sleepzy have ads?
Sleepzy shows ads; Sleep Timer does not.
Which is updated more often, Sleep Timer or Sleepzy?
Sleep Timer ships an update every 2 months, and Sleepzy monthly. Most recently, Sleep Timer was updated on November 1, 2026 and Sleepzy on November 1, 2026.

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