Out of 247+ sleep calculator apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
Compare top Sleep Calculator Apps (September 2026)
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.
This utility helps you determine the ideal times to sleep or wake up by calculating based on natural 90-minute sleep cycles. It aims to help users feel more refreshed and energized by waking them between these cycles.
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
What are the best sleep calculator apps for iPhone?
Sleep Calculator Pro tops our sleep calculator apps ranking as of September 2026, with a 5.0-star average from 76 App Store ratings, and it's free to download.
Are there free sleep calculator apps for iPhone?
Yes — 20 of the top sleep calculator apps we rank are free to download, including Sleep Calculator Pro and Sleep Calculator Plus.
Does Sleep Calculator Pro have ads or in-app purchases?
Sleep Calculator Pro has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
How many sleep calculator apps are on the App Store?
We track 247+ sleep calculator apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.