Comparison

Sleepace vs Sleep Cycle Bedtime Calculator

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

Head to head
About

Sleepace

This app monitors your sleep patterns, offering professional suggestions to improve sleep quality and build healthy habits. It also provides ambient light and music to help you fall asleep faster and a smart alarm to wake you at the optimal time.

Highlights
  • Accurate sleep monitoring
  • Professional sleep suggestions
  • Ambient light and music sleep aid
  • Smart alarm for optimal wake-up
  • Apple Health integration
Features
Read full description

Sleepace focuses on sleep monitoring and sleep-aid, we have these 4 main features for you to create better sleep: 1. Sleep Monitoring Accurate sleep monitoring and professional suggestions to improve your sleep quality, and even to build up good sleep habit 2.Sleep-Aid Efficient ambient light (from our Nox series products) and music enable you to fall asleep quickly, over 85% of the testing participants give us positive feedback 3.Smart Alarm Our alarm is smart enough to wake you up in the most suitable time in the morning, so that you could fulfill healthy sleep cycle and feel refreshed 4.Apple Health You can upload your sleep data, including sleep time, fall asleep time, sleep score, sleep cycle, heart rate and breath rate, to Apple Health and benefit from easier registration with Apple Health data

About

Sleep Cycle Bedtime Calculator

This app helps you determine optimal wake-up and bedtime based on sleep cycles. It calculates ideal times to go to sleep and wake up to feel more refreshed, considering the average 90-minute sleep cycle duration. You can also customize your estimated time to fall asleep.

Highlights
  • Calculate optimal wake-up times
  • Calculate optimal bedtime
  • Based on 90-minute sleep cycles
  • Supports 5-6 sleep cycles
  • Customizable fall asleep time
  • Apple Watch support
Features
Read full description

Plan your bedtime, calculate wake-up options, and explore your sleep history with Sleep Calc for iPhone and Apple Watch. No account or sign-up required. Find a time that fits Enter your wake-up time to see bedtime options, or enter your bedtime to see wake-up options. Adjust the time you need to fall asleep and the range of sleep cycles shown. Calculate on Apple Watch Check bedtime and wake-up options from your wrist. Your calculator settings sync between your iPhone and paired Apple Watch. Review your sleep history Connect Apple Health to view sleep records from your Apple Watch or other compatible apps. Explore your sleep duration, bedtime consistency, interruptions and Sleep Scores with summaries and charts. The most recent 14 days are available for free. Full available sleep history requires Sleep Calc Pro. Set bedtime and wake-up alarms Create alarms from your calculated times, edit their times and labels, choose repeat days and select an alarm sound. Requires Sleep Calc Pro and an iPhone or iPad running iOS 26 or iPadOS 26 or later. Purchases and subscriptions Additional paid features are available through one-time purchases and auto-renewable subscriptions. Available options, included features, and prices are shown in the app before purchase. Subscriptions renew automatically unless canceled. You can manage or cancel them in your App Store account settings. About the estimates The calculator uses fixed 90-minute cycle estimates; actual sleep cycles vary. It does not measure or predict your sleep stages. Sleep Scores summarize the sleep data available in Apple Health and are not a medical assessment. Privacy Policy: https://sleepcycles.carrd.co/#privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Sleepace4 screens
Sleep Cycle Bedtime Calculator3 screens

Verdict

The call

The clearest difference is review sentiment: Sleep Cycle Bedtime Calculator at 80% against Sleepace's 21%. Sleep Cycle Bedtime Calculator also leads on rating (4.1 vs 1.9) and ratings volume (306 vs 29). Sleepace's advantage is in-app purchases (none vs 4) and iOS requirement (7.1 vs 18.0). On price, update cadence, ads and monetization model 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 Cycle Bedtime Calculator sells 3 in-app purchases, starting at $4.99 per year. Sleepace asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Sleep Cycle Bedtime Calculator holds the better App Store score, 4.1 against 1.9. That said, the two scores are not equally well evidenced: Sleep Cycle Bedtime Calculator has 306 ratings behind it against 29, so its average is the more settled of the two. Written reviews point the same way: 21% of Sleepace's written reviews are positive against 80% of Sleep Cycle Bedtime Calculator's.

UpkeepUpdate frequency

Sleepace ships an update every 2 months, Sleep Cycle Bedtime Calculator every 3 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Sleepace versus Sleep Cycle Bedtime Calculator: the parameters behind the verdict, then further details
ParameterSleepaceSleep Cycle Bedtime Calculator
PriceFreeFree
Rating1.9 (29 ratings)4.1 (306 ratings) — better
Positive reviews20.9% of reviews80.0% of reviews — better
Number of ratings29306 — better
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, Apple Watch — better
Requires iOS7.1 — better18.0
Further details — not scored
Size59 MB35 MB
Age rating4+4+
DeveloperShenzhen Medica Technology Development Co., Ltd.Kai Oelfke

Customer experience

Sleepace

All ratings27 ratings
Positive18.5%
Neutral7.4%
Negative74.1%
Written reviews134 reviews
Positive20.9%
Neutral8.2%
Negative70.9%

Sleep Cycle Bedtime Calculator

All ratings300 ratings
Positive77.3%
Neutral5.3%
Negative17.3%
Written reviews80 reviews
Positive80.0%
Neutral3.8%
Negative16.3%

Bugs and requests

Sleepace

Not enough reviews yet to summarise bugs or requests.

Sleep Cycle Bedtime Calculator

Reported bugs

5 issues
  • Touch screen unresponsive
  • App settings reset upon closing
  • Alarm goes off at unintended times
  • Skips certain time slots in calculations
  • Confusing icon similarity with Apple Watch app

Requested features

9 requests
  • Add graphs and visual data representations
  • Integrate with Apple Health or Fitbit data
  • Display number of sleep cycles achieved
  • Built-in alarm functionality
  • Persist settings when closing app
Show 4 more
  • Multi-language support
  • Detailed sleep analysis and personalized insights
  • Larger, more detailed charts for phone display
  • Calculate wake time from current time

In-app purchases

None

Sleepace

No in-app purchases

3 purchases

Sleep Cycle Bedtime Calculator

Subscriptions2
  • SleepCalc Pro Yearly3 Days trial$4.991 Year
  • SleepCalc Pro Yearly$4.991 Year
One-time1
  • SleepCalc Pro2 variants$9.99

Questions

Is Sleepace free?
Sleepace is free to download, with no in-app purchases.
Is Sleep Cycle Bedtime Calculator free?
Sleep Cycle Bedtime Calculator is free to download, with in-app purchases available.
Which has better reviews, Sleepace or Sleep Cycle Bedtime Calculator?
Sleep Cycle Bedtime Calculator is rated higher. Sleepace averages 1.9 out of 5 from 29 ratings, while Sleep Cycle Bedtime Calculator averages 4.1 from 306 ratings.
Do Sleepace or Sleep Cycle Bedtime Calculator have ads?
Neither Sleepace nor Sleep Cycle Bedtime Calculator shows ads.
Which is updated more often, Sleepace or Sleep Cycle Bedtime Calculator?
Sleepace ships an update every 2 months, and Sleep Cycle Bedtime Calculator every 3 months. Most recently, Sleepace was updated on November 1, 2026 and Sleep Cycle Bedtime Calculator on November 3, 2026.

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