Best Sleep Calculator App

246+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated September 2026

Whether you're new to sleep calculator app or looking for an upgrade, our curated collection of 246+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Sleep Calculator App (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Sleep Calculator ProSleep Calculator ProFree5.0★ (75)NoNoAug 2026
2Sleep Cycle - Tracker & SoundsSleep Cycle - Tracker & SoundsFree4.7★ (29K)NoYesSep 2026
3Sleep Calculator AppSleep Calculator AppFree3.0★ (2)YesYesAug 2026
4Sleepzy - Sleep Cycle TrackerSleepzy - Sleep Cycle TrackerFree4.3★ (22K)YesYesSep 2026
5Sleep Calculator PlusSleep Calculator PlusFree4.8★ (31)NoNoSep 2026
6sleepytime calculatorsleepytime calculatorFree4.9★ (13)NoYesAug 2026
7Sleep NumberSleep NumberFree4.5★ (169K)NoNoSep 2026
8Sleep Cycle - Sleep CalculatorSleep Cycle - Sleep CalculatorFree4.5★ (19)YesYesAug 2026

Top Picks for Sleep Calculator App

5.0(75 ratings)
Free
Sleep Calculator Pro screenshot 1
Sleep Calculator Pro screenshot 2
Sleep Calculator Pro screenshot 3
Sleep Calculator Pro screenshot 4
Sleep Calculator Pro screenshot 5
Sleep Calculator Pro screenshot 6

This app helps you determine the optimal times to go to sleep and wake up to align with your natural 90-minute sleep cycles. It calculates ideal bedtime based on your desired wake-up time and vice-versa, promoting a more rested feeling upon waking. It also includes features for tracking sleep phases and a smart alarm to wake you gently.

Sleep Cycle - Tracker & Sounds#2

Sleep Cycle - Tracker & Sounds by Sleep Cycle AB

Alarm Clock and Tracking App
Strong Contender
💪 Health & Fitness
4.7😐(29K ratings)
FreeIn-App Purchases
#59in Health & Fitness
Sleep Cycle - Tracker & Sounds screenshot 1
Sleep Cycle - Tracker & Sounds screenshot 2
Sleep Cycle - Tracker & Sounds screenshot 3
Sleep Cycle - Tracker & Sounds screenshot 4
Sleep Cycle - Tracker & Sounds screenshot 5
Sleep Cycle - Tracker & Sounds screenshot 6

This app uses sound analysis to track sleep patterns, identify potential issues, and build healthier sleep routines. It features an AI sleep coach, a smart alarm to wake you gently, and tools to record snoring and sleep talking.

What We Love

  • 🚀 Accurate sleep tracking
  • 👍 Gentle alarm wakes you up during light sleep
  • 📊 Detailed sleep data and insights
  • 🌙 Soothing sleep aid sounds

Room to Improve

  • 🐛 Alarm not always reliable, sometimes doesn't go off
  • 🔋 High battery drain, especially on Apple Watch
  • 💰 Expensive subscription model, limited free features
  • 📉 Inaccurate sleep tracking in some cases

More Sleep Calculator App apps to explore

FAQ about Sleep Calculator App

What is the best sleep calculator app for iPhone?
Sleep Calculator Pro tops our sleep calculator app ranking as of September 2026, with a 5.0-star average from 75 App Store ratings, and it's free to download.
Yes — 20 of the top sleep calculator app we rank are free to download, including Sleep Calculator Pro and Sleep Cycle - Tracker & Sounds.
Sleep Calculator Pro has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 246+ sleep calculator app on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
This app helps you determine the best times to go to sleep and wake up to maximize rest. It calculates these times based on natural 90-minute sleep cycles, aiming to wake you during a lighter sleep phase for a more refreshed feeling. It also includes sleep tracking and a smart alarm.
The app assumes a human takes about 15 minutes to fall asleep and that a good night's sleep consists of 5-6 complete 90-minute sleep cycles. By selecting your desired wake-up time, it calculates the ideal bedtime, or vice-versa, to ensure you wake up between these cycles.