Comparison

Sleep application vs Rainy Mood

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

Head to head
About

Sleep application

This app uses binaural beat technology and flicker noise to help users fall asleep faster and improve concentration and memory. It offers various sound settings to find what works best for individual needs.

Highlights
  • Binaural beat technology
  • Flicker Noise sound
  • Sleep induction
  • Improved concentration
  • Enhanced memory
  • Customizable sound settings
Features
Read full description

--- The Strongest Sleep Induction App --- You can sleep quickly just by listening when you go to bed. We ranked No. 1 in Japan (iPhone and iPad). ●Thank you very much! #1 Top paid app for the iPhone in Japan #1 Top paid app for the iPad in Japan #9 App Store BEST OF 2012 in Japan #3 in 2013 #4 in 2014 #3 in 2015 #13 in 2016 #8 in 2017 ===================================== Reviews from users *The following contents are translations of reviews posted by Japanese users. ===================================== ■ This is the one! Version 3.5 Sept. 15, 2012 My level of concentration has increased! I have better memory too! Now I can sleep well at night! ■ Great!! In studying or at work, I always use this app. I am hooked on it! ■ I can't live without this app! No need to count sheep with this app! I'm out like a light. ■ My insomnia is gone!!! I guess everyone has different results but this app has sure worked to cure my insomnia! ■ Someone with insomnia I had a slight case of insomnia but now all that is gone after listening to this app. ■Explanation of this App 1. When a person hears two different frequencies in their ears, the difference of those frequencies will appear in the brain as one frequency. In this app that principle is used and your brain will be in a state as when you are sleeping. 2. The sound of "Flicker Noise" is known to help balance the autonomic nervous system as it enters the hypothalamus of the brain, which helps relieve pressure on the sympathetic nervous system. Through a combination of the two above methods you will be lead directly and indirectly into a deep sleep. ※ The sound of "Flicker Noise" is the sound parameters of the background environmental sound. How to Use 1. Start the app. 2. Choose your favorite background music. Also, for more effective sounds through the change in settings. Results (sleep / relaxation/ concentration, memory) - The effects of concentrating The mode is for increasing brain activity and raising your level of concentration before doing sports. - The effects of memory This mode will take you a deeper level than the relaxation mode. This mode is recommended for studying or raising your level of memory. ※ The sound which can help each person is slightly different so we suggest that you try different settings to find the sound that best works for you. ※There is no guarantee that the effect will work on everyone. ○This application uses a binaural beat technology, which has been scientifically proven effective. However this method uses only 3db, so based on how sensitive the user is, there may be a gap in benefits received. Even if you did not get results your first time, keep using it every day. You should slowly see better results. ○How to use this application effectively ・Close your eyes, relax and assume a position laying down. ・This application needs to use many low and high frequencies so use high quality headphones not cheap 100 yen ones. ・If your ears start to hurt, please turn down the volume until until the music is barely audible. ○ Our company has an app "3D Eyesight Recovery" to help restore eyesight using stereogram. Stereogram uses the eyesocket muscles resulting in effectively stretching your eyes and it is said that when used before sleeping this app helps you to sleep more soundly. Why not try this wonderful app? ※ You need a special way to see Stereogram, so a little practice is required. The instructions for this are in the app. ※Binaural Beat is a technology which controls the brain waves. For anyone with one of the following problems below, please consult your Physician. ・ For Those with Epilepsy ・ For Those with Heart Problems (especially those with pacemakers) Do not us this app when driving or doing other dangerous work.

About

Rainy Mood

Experience the internet's most popular rain sounds to aid sleep, focus, and relaxation. Enjoy customizable rain scenes with stunning 3D audio and a vast sound library for a unique, never-repeating experience.

Highlights
  • Customizable rain scenes
  • HD/48kHz 3D audio
  • Algorithmic randomizer
  • Massive sound library
  • Sound mixer
  • Sleep timer
  • Play music simultaneously
Features
Read full description

Rainy Mood is the internet's most popular rain experience. Join millions of people who use Rainy Mood to help them sleep, study, and relax. The new Rainy Mood app has four fully-customizable rain scenes -- Classic, Ocean, Countryside, and Café. The world's #1 leader in rain sounds has painstakingly composed each rain soundscape. With stunning HD/48kHz 3D audio and algorithmic randomizer, your brain will naturally relax and focus. Our massive sample library includes 400+ unique thunder claps, cricket chirps, ocean waves, and special effects. Individual rain impact textures include rain on grass, dirt, wood, tin roof, ocean, leaves, and rocks. FEATURES + 3D audio, works with standard headphones + Algorithmic randomizer and massive sound library for always-fresh sound that never repeats + Sound mixer + Sleep timer + Energy efficient + Play your music simultaneously. Works with your music apps. + AirPlay (NEW!) + Includes free lifetime updates.

Screenshots

Sleep application3 screens
Rainy Mood4 screens

Verdict

The call

The clearest difference is ratings volume: Rainy Mood at 1K against Sleep application's 4. Rainy Mood also leads on chart position (#42 vs unranked). Sleep application's advantage is update cadence (every 2 months vs every 8 months) and rating (5.0 vs 4.7). On ads, in-app purchases and device support 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

Sleep application costs $0.99 and Rainy Mood $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Sleep application holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Rainy Mood has 1K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of Sleep application's written reviews are positive against 82% of Rainy Mood's.

UpkeepUpdate frequency

Sleep application ships an update every 2 months, Rainy Mood every 8 months. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

Scorecard8 real differences · 3 level
Sleep application versus Rainy Mood: the parameters behind the verdict, then further details
ParameterSleep applicationRainy Mood
Price$0.99 — better$4.99
Rating5.0 (4 ratings) — better4.7 (1K ratings)
Positive reviews100.0% of reviews — better81.7% of reviews
Number of ratings41K — better
Update frequencyEvery 2 months — betterEvery 8 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
Best chart rank—#42 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better26.1
Further details — not scored
Size61 MB54 MB
Age rating4+4+
Developerkoikoi.bizPlain Theory, Inc.

Customer experience

Sleep application

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews34 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Rainy Mood

All ratings998 ratings
Positive92.6%
Neutral2.7%
Negative4.7%
Written reviews475 reviews
Positive81.7%
Neutral8.2%
Negative10.1%

In-app purchases

None

Sleep application

No in-app purchases

None

Rainy Mood

No in-app purchases

Questions

Is Sleep application free?
Sleep application costs $0.99, with no in-app purchases.
Is Rainy Mood free?
Rainy Mood costs $4.99, with no in-app purchases.
Which has better reviews, Sleep application or Rainy Mood?
Sleep application is rated higher. Sleep application averages 5.0 out of 5 from 4 ratings, while Rainy Mood averages 4.7 from 1K ratings.
Do Sleep application or Rainy Mood have ads?
Neither Sleep application nor Rainy Mood shows ads.
Which is updated more often, Sleep application or Rainy Mood?
Sleep application ships an update every 2 months, and Rainy Mood every 8 months. Most recently, Sleep application was updated on October 30, 2026 and Rainy Mood on October 29, 2026.

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