Sleep Cycle Bedtime Calculator

Kai Oelfke · Health & Fitness

4.1 300 ratings Free

Independent analytics for this App Store listing. AppTracker is not affiliated with Kai Oelfke.

Chart standing · US

Not currently charting in this storefront.

What changed · US

Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.

Oct 12, 2026
New version 1.0.12 → 1.0.13

Bug fixes and stability improvements

Oct 10, 2026
Rating ★ 4.11 → 4.12
Oct 9, 2026
New version 1.0.11 → 1.0.12
Oct 6, 2026
Rating ★ 4.1 → 4.11
Oct 3, 2026
Rating ★ 4.11 → 4.1
Sep 9, 2026
Rating ★ 4.1 → 4.11
Sep 5, 2026
New version 1.0.10 → 1.0.11
Aug 29, 2026
Rating ★ 4.11 → 4.1
Aug 26, 2026
Rating ★ 4.1 → 4.11

Price & rating history · US

Reconstructed from the listing changes AppTracker has observed in this storefront. A field is charted once it has changed more than once, and each line starts at the value it moved from.

Average rating history over the observed period. 4.05 4.10 4.15 4.20 Aug 23 Sep 5 Sep 19 Oct 2 Oct 15

Average rating · ★ 4.12 now · 6 changes on record

Ratings breakdown · US

The star breakdown behind this app's rating in this storefront.

5★ 64% 192
4★ 13% 40
3★ 5% 16
2★ 5% 15
1★ 12% 37

In-app purchases · US

What this app sells inside itself, grouped by kind and priced for this storefront.

Subscriptions
SleepCalc Pro Yearly $4.99/ year
SleepCalc Pro Yearly $4.99/ year · 3-day free trial
One-time purchases
SleepCalc Pro $9.99

Screenshots

About

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/

What's new · 1.0.13

Bug fixes and stability improvements

Details

DeveloperKai Oelfke
ReleasedJan 2023
UpdatedApr 2026
Version1.0.13
Size22.5 MB
RequiresiOS 18.0 or later
Age rating4+
LanguagesEnglish
PriceFree
Categories Health & FitnessUtilities
Bundle IDde.kaioelfke.SleepCalc