Comparison

Sleep Diary App vs Sleep Cycle Tracker

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

Head to head
About

Sleep Diary App

Easily log your sleep durations to analyze your health and become more conscious of your sleep patterns. This app integrates with Apple Health to share your sleep data seamlessly. iPhone 6 users can also track atmospheric pressure changes during sleep.

Highlights
  • Log sleep durations
  • Analyze sleep health
  • Connect with Apple Health
  • Share sleep data
  • Monitor atmospheric pressure (iPhone 6)
Read full description

Sleep Diary is a convenient way to record duration of sleep to analyze your health. We spend about a third part of our life sleeping. Time came to become more conscious about it with a Sleep Diary. This app will help you easily log your sleep durations to the standard Health app. No gadgets required. In addition, lucky owners of iPhone 6 can monitor how atmospheric pressure changed during their sleep. Connect with Apple Health Connect Sleep Diary to Apple's Health to share your sleep data between them. App will ask you to turn reading and writing of sleep analysis data automatically after the first launch.

About

Sleep Cycle Tracker

This app offers a unique blend of curated sounds, compelling stories, and soothing music to alleviate stress, reduce anxiety, and enhance sleep quality. It provides a user-friendly interface with personalized relaxation experiences and unguided relaxation paths.

Highlights
  • Curated sound library
  • Bedtime stories
  • Calming music
  • User-friendly design
  • Customizable playlists
  • Unguided relaxation paths
Features
Read full description

Harmony, Balance Mind and Body, brings you the ultimate relaxation experience, setting itself apart in a crowded wellness app market. Unlike other apps, Harmony offers a unique blend of carefully curated sounds, compelling stories, and soothing music designed to alleviate stress, reduce anxiety, and enhance sleep quality. Diverse Content: From the gentle whisper of rain to the serene sounds of the forest, our expansive sound library caters to all preferences. Coupled with engaging bedtime stories and calming music, Harmony offers a holistic approach to relaxation and sleep. User-Friendly Design: With a focus on simplicity and ease of use, Harmony ensures a seamless experience for all users. Navigate effortlessly through our content and find your perfect relaxation theme with just a few taps. Personalized Experiences: Tailor your relaxation journey with customizable playlists and settings that adapt to your personal preferences and needs, provides a richer variety of content, including music and stories, fostering a deeper and more varied relaxation experience. Harmony’s strength lies in its unguided relaxation paths, giving users the freedom to choose how they unwind without the guidance of a narrator. Our targeted approach to relaxation and mental well-being ensures that whether you're looking to reduce stress, conquer insomnia, or simply unwind after a long day, Harmony has something special for you. Discover the tranquility and peace that come from being in balance with your mind and body. Join thousands of users who have transformed their bedtime routines and daily stress relief practices with Harmony. Dive into a world where each sound and note brings you closer to serenity. By downloading our app, you're stepping into a journey of self-improvement and positive habit building. To ensure a smooth experience, we kindly ask you to review our Terms of Use (EULA), you can find them here: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Visit our website at https://www.relaxingharmony.app/ for more information or contact us for support at contact@theready.app. Your best self is just a click away with Ready - self improvement app!

Screenshots

Sleep Diary App3 screens
Sleep Cycle Tracker4 screens

Verdict

The call

The clearest difference is rating: Sleep Cycle Tracker at 5.0 against Sleep Diary App's 3.5. Sleep Cycle Tracker also leads on review sentiment (100% vs 59%). Sleep Diary App's advantage is ratings volume (23 vs 1). On price, update cadence, ads and in-app purchases 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 Diary App sells 3 one-off in-app purchases and Sleep Cycle Tracker sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Sleep Cycle Tracker holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: Sleep Diary App has 23 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 59% of Sleep Diary App's written reviews are positive against 100% of Sleep Cycle Tracker's.

UpkeepUpdate frequency

Sleep Diary App ships an update fortnightly, Sleep Cycle Tracker monthly. The most recent releases landed on October 14, 2026 and October 3, 2026 respectively.

Scorecard3 real differences · 7 level
Sleep Diary App versus Sleep Cycle Tracker: the parameters behind the verdict, then further details
ParameterSleep Diary AppSleep Cycle Tracker
PriceFreeFree
Rating3.5 (23 ratings)5.0 (1 ratings) — better
Positive reviews59.0% of reviews100.0% of reviews — better
Number of ratings23 — better1
Update frequencyFortnightly — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPod, Apple WatchiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size5 MB104 MB
Age rating4+4+
DeveloperAlexander IvanovReady Apps LLC (WA)

Customer experience

Sleep Diary App

All ratings23 ratings
Positive56.5%
Neutral17.4%
Negative26.1%
Written reviews100 reviews
Positive59.0%
Neutral14.0%
Negative27.0%

Sleep Cycle Tracker

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Sleep Diary App

One-time3
  • Apple$0.99
  • Salad$2.99
  • Bag of healthy food$9.99
3 purchases

Sleep Cycle Tracker

Subscriptions2
  • Monthly Subscription$1.991 Month
  • Yearly Subscription7 Days trial$9.991 Year
One-time1
  • Lifetime subscription$19.99

Questions

Is Sleep Diary App free?
Sleep Diary App is free to download, with in-app purchases available.
Is Sleep Cycle Tracker free?
Sleep Cycle Tracker is free to download, with in-app purchases available.
Which has better reviews, Sleep Diary App or Sleep Cycle Tracker?
Sleep Cycle Tracker is rated higher. Sleep Diary App averages 3.5 out of 5 from 23 ratings, while Sleep Cycle Tracker averages 5.0 from 1 ratings.
Do Sleep Diary App or Sleep Cycle Tracker have ads?
Neither Sleep Diary App nor Sleep Cycle Tracker shows ads.
Which is updated more often, Sleep Diary App or Sleep Cycle Tracker?
Sleep Diary App ships an update fortnightly, and Sleep Cycle Tracker monthly. Most recently, Sleep Diary App was updated on October 14, 2026 and Sleep Cycle Tracker on October 3, 2026.

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