Comparison

Sleep Cycle Bedtime Calculator vs Bedtime Bully

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

Head to head
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/

About

Bedtime Bully

This application provides timely reminders to help users wind down and go to bed on schedule. It offers both a consistent global bedtime setting and a flexible weekly schedule to manage different bedtimes throughout the week.

Highlights
  • Bedtime reminders
  • Global bedtime setting
  • Weekly bedtime schedule
  • Customizable notifications (upcoming)
  • Bedtime history analytics (upcoming)
Features
Read full description

This app focuses on helping you go to bed on time! This is done by giving you a heads up before your bedtime giving you ample time to wrap up projects and wind down for the night. You can set a global bedtime if you prefer a consistent bedtime. Or you can use the weekly schedule feature to manage different bedtimes throughout the week. Upcoming features include customizing the pre-bedtime notifications and analytics of your bedtime history.

Screenshots

Sleep Cycle Bedtime Calculator3 screens
Bedtime Bully4 screens

Verdict

The call

The clearest difference is monetization model: Sleep Cycle Bedtime Calculator at free against Bedtime Bully's free with in-app purchases. Sleep Cycle Bedtime Calculator also leads on ratings volume (303 vs 3). Bedtime Bully's advantage is update cadence (every 3 weeks vs every 3 months) and rating (4.3 vs 4.1). On price, ads, in-app purchases 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. Sleep Cycle Bedtime Calculator sells 3 in-app purchases, starting at $4.99 per year and Bedtime Bully sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Bedtime Bully holds the better App Store score, 4.3 against 4.1. That said, the two scores are not equally well evidenced: Sleep Cycle Bedtime Calculator has 303 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

Sleep Cycle Bedtime Calculator ships an update every 3 months, Bedtime Bully every 3 weeks. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

Scorecard5 real differences · 5 level
Sleep Cycle Bedtime Calculator versus Bedtime Bully: the parameters behind the verdict, then further details
ParameterSleep Cycle Bedtime CalculatorBedtime Bully
PriceFreeFree
Rating4.1 (303 ratings)4.3 (3 ratings) — better
Positive reviews80.0% of reviews—
Number of ratings303 — better3
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS18.016.0 — better
Further details — not scored
Size35 MB4 MB
Age rating4+4+
DeveloperKai OelfkeRobert J Sarvis Jr

Customer experience

Sleep Cycle Bedtime Calculator

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

Bedtime Bully

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and 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

Bedtime Bully

Not enough reviews yet to summarise bugs or requests.

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
1 purchases

Bedtime Bully

One-time1
  • Unlock Weekly Bedtime Schedule$1.99

Questions

Is Sleep Cycle Bedtime Calculator free?
Sleep Cycle Bedtime Calculator is free to download, with in-app purchases available.
Is Bedtime Bully free?
Bedtime Bully is free to download, with in-app purchases available.
Which has better reviews, Sleep Cycle Bedtime Calculator or Bedtime Bully?
Bedtime Bully is rated higher. Sleep Cycle Bedtime Calculator averages 4.1 out of 5 from 303 ratings, while Bedtime Bully averages 4.3 from 3 ratings.
Do Sleep Cycle Bedtime Calculator or Bedtime Bully have ads?
Neither Sleep Cycle Bedtime Calculator nor Bedtime Bully shows ads.
Which is updated more often, Sleep Cycle Bedtime Calculator or Bedtime Bully?
Sleep Cycle Bedtime Calculator ships an update every 3 months, and Bedtime Bully every 3 weeks. Most recently, Sleep Cycle Bedtime Calculator was updated on October 24, 2026 and Bedtime Bully on October 21, 2026.

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