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Sleep Cycle Bedtime Calculator

Sleep Cycle Bedtime Calculator

Wake Up & Bed Time Schedule

240 ratings
71 reviews
🔧 Utilities
💪 Health & Fitness
Free
In-App Purchases

Details

  • Released
  • Updated

Features

Developer

Kai Oelfke
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Sleep Cycle Bedtime Calculator screenshot #1 for iPhone
Sleep Cycle Bedtime Calculator screenshot #2 for iPhone
Sleep Cycle Bedtime Calculator screenshot #3 for iPhone
iphone
ipad
watch
🧾$4.99 - $9.99
In-App Purchase↘︎
📌Ready
Reviews summary↘︎
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❓5 answered
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About

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.

✓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
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What users say

Summarized from real user reviews of Sleep Cycle Bedtime Calculator. Based on 240 reviews and a 4.0/5 average, it highlights the 9 positives and 9 negatives reviewers mention most about this Health & Fitness app.

Positive things

  • 🆓Completely free with no ads or data collection
  • 👍Simple and intuitive user interface
  • 🎯Accurate sleep cycle calculations based on 90-minute cycles
  • ⚡Quick and easy to use
  • 📊Shows multiple sleep time options and highlights best choices
  • 🔒Respects user privacy with no data tracking
  • 🛏️Helps improve sleep quality and morning alertness
  • ⚙️Allows flexible adjustment of wake and bedtime settings
  • 🎨Clean, sleek design without clutter

Negative things

  • 😕Confusing interface for some users
  • 🐛Unresponsive touch controls reported
  • 📉Lacks visual graphs and data visualization
  • ❌No detailed sleep analysis or insights
  • 🔄Settings reset when app is closed
  • ⏰Alarm integration issues
  • 📱Not user-friendly for new users
  • 🚫Limited functionality compared to other sleep trackers
  • ❓Unclear how to interpret displayed information
See all reviews

What's New in Sleep Cycle Bedtime Calculator

1.0.10

April 15, 2026

Set bedtime and wake-up alarms¹² right from SleepCalc — no more switching apps. Plus: your Sleep Score, new charts, and a more reliable Apple Watch sync. New • Bedtime and wake-up alarms¹² • Sleep Score — see how restorative your night was, with 14 days of history included and your full history available with a purchase¹ • Sleep Duration chart³ • Sleep Interruptions chart³ Improved • Sleep Consistency chart is smoother and easier to read • Bedtime and wake-up times now persist between sessions • Customize the minimum and maximum number of sleep cycles to match your sleep style • Settings and time sync between Apple Watch and iPhone are more reliable Fixed • Apple Health sleep data now syncs more reliably ¹ Requires purchase ² Requires iOS 26 ³ Requires Apple Watch with sleep tracking enabled in Apple Health

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Subscription plans

SleepCalc Pro Yearly

Unlock SleepCalc Pro

$4.991 Year
3 Days trial
How to cancel Sleep Cycle Bedtime Calculator subscription ⁉️
1

In-App Purchases

$9.99

SleepCalc Pro

Unlock SleepCalc Pro

User reviews

Most RecentHighest RatedLowest Rated

Sleep

I love this App
cat@ dogcat@ dog

Hard to evaluate what it shows.

Confusing.
Jersey 007Jersey 007

My new favorite

I like that it in addition to the times to wake up, shows the number of hours you’ll get, and highlights the two best ones for a full night’s sleep. And I love that it doesn’t collect any data or otherwise compromise user privacy—and that it’s FREE.
occasional downloaderoccasional downloader

Perfect

I like how I can easily see what time I should go to bed or what time I should wake up based on my cycles. I have noticed that I’m not as drowsy in the morning (if I follow it and go to bed). It would be cool to eventually be able to see more data from Apple in the app like if my cycles align with the typical 90 minutes but for now I’m not complaining. Thanks for this app!
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ZachAttack316ZachAttack316

Flexible

I like the ability to change the wake up and going to bed times. And how it shows how long to sleep! It helps to know if I will be getting enough sleep cycles in that night!
MommomkrisMommomkris
See 66 more reviews

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User experience

🐞

Reported Bugs

5 issues

Touch screen unresponsive

Bug

App settings reset upon closing

Bug

Alarm goes off at unintended times

Bug

Skips certain time slots in calculations

Bug

Confusing icon similarity with Apple Watch app

Bug
✨

Requested Features

9 requests

Add graphs and visual data representations

Feature

Integrate with Apple Health or Fitbit data

Feature

Display number of sleep cycles achieved

Feature

Built-in alarm functionality

Feature

Persist settings when closing app

Feature

Multi-language support

Feature

Detailed sleep analysis and personalized insights

Feature

Larger, more detailed charts for phone display

Feature

Calculate wake time from current time

Feature

FAQ

What does the Sleep Cycle Bedtime Calculator do?

This app helps you calculate the best times to go to bed and wake up to maximize rest. It's based on the scientific principle of sleep cycles, which are approximately 90 minutes long, and aims to align your sleep schedule with these cycles for better refreshment.

How does the app calculate sleep and wake times?

The app uses the duration of sleep cycles (around 90 minutes) to determine optimal times. For example, if you need to wake up at a certain time and aim for 5-6 sleep cycles, it will suggest a corresponding bedtime. You can also input your desired wake-up time and the number of cycles you want to achieve.

Can I customize how long it takes me to fall asleep?

Yes, the app allows you to customize your estimated time to fall asleep. Most people take about 15 minutes to fall asleep, and this feature lets you adjust that estimate for more accurate bedtime calculations.

Is this app compatible with Apple Watch?

Yes, the application offers support for Apple Watch. This integration may allow for more seamless tracking or interaction with your sleep schedule directly from your wearable device.

What is the cost of using this app?

The app is available for free and does not appear to have any in-app purchases or advertisements based on the provided information. This means you can use its core functionality without any financial commitment.