Comparison

Serenity 4K vs Code Rain

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

Head to head
About

Serenity 4K

Experience hyper-realistic relaxation with breathtaking 4K videos and audio. Choose from various nature scenes, fireplaces, or aquariums. This app also provides weather information and an interactive 3D Earth, making it a versatile tool for unwinding.

Highlights
  • 4K Ultra HD cinema quality video and audio
  • Variety of relaxation scenes (beaches, fireplaces, aquariums)
  • Interactive 3D Earth with live data
  • On-demand 4K video downloading
  • Customizable widgets for weather and time
  • Automatic location detection for weather
Features
Read full description

**Please note this app will scale to the maximum resolution of your device, but is 4K ready and future-proof!** Introducing Serenity 4K: The ultimate Ultra HD Relaxation and Meditation application. Serenity 4K features breathtaking true cinema quality 4K video and audio that include Architecture, Beaches, Trees, Lakes, Ponds, Pools, Fountains, Fireplaces, Aquariums, and more! Feeling stressed? Relax by listening to deep ocean breezes and stunning visuals, sit cozy with and hear the warm sparks of a Fireplace, watch and listen to fish swimming in a clear pond, relax sitting on an exotic beach in Thailand, or meditate to the sound of forest leaves in nature. If that wasn’t enough, Serenity 4K also displays weather information, includes a 3D Earth with live data, and even has various Radars to choose from making Serenity 4K four applications in one. With Serenity 4K, relaxation, meditation, or taking a nap has never been so hyper-realistic and enjoyable! Serenity can also optionally display useful information such as Weather and Time and allows you to customize on screen Widgets (or no Widgets at all) as well as choosing a custom 4K video super easily. Serenity 4K can also automatically delete and re-download 4K videos as needed to optimize for your hard drive space and more! And best of all, Serenity 4K is Universal, so with one purchase you get the application for iPhone, iPad, and Apple TV! Super Cool Features! - Relax/Meditate/Take a Nap to 4K Ultra HD cinema quality video with full audio sound effects - 4K Videos include: Architecture, Beaches, Trees, Lakes, Ponds, Pools, Fountains, Fireplaces, Aquariums, and more - Choose a Custom 4K Video with Graphical Theme Chooser - Choose three different Widget Styles providing timely and useful information; or no Widgets at all - Interactive 3D Earth with Live Clouds, Earthquakes, and Tropical Cyclones - On-Demand downloading of 4K videos automatically optimizes hard disk space - Weather works for hundreds of thousands of locations worldwide -Automatic Location Detection or Manually enter Locations for Weather - Unlimited Multiple Weather Locations - Imperial/Metric System (Fahrenheit/Celsius) Weather support - Incredibly easy to use!

About

Code Rain

Experience a digital code rain effect, inspired by the iconic Matrix visuals. This simulator offers a simple, offline experience with no data collection. Choose between a free version with limited full-screen play or a Pro version for uninterrupted immersion.

Highlights
  • Digital code rain effect
  • Matrix-inspired visuals
  • Offline functionality
  • No data collection
  • Full-screen mode
  • Adjustable settings
Features
Read full description

A digital code rain effect simulator. Matrix fans, enjoy! Simple and easy to use. No internet required. No data collected. Base Vs Pro version: - Both base version and pro version provide the same settings. - Base version has limited full screen play time (settings dialog will show up again after certain time, or screen going off depending on idle/auto-lock settings of your phone). - Pro version allows the full screen mode to run indefinitely, it also prevents the screen from going off.

Screenshots

Serenity 4K4 screens
Code Rain1 screens

Verdict

The call

The clearest difference is price: Code Rain at Free against Serenity 4K's $2.99. Code Rain also leads on review sentiment (38% vs 0%) and update cadence (every 3 months vs every 8 months). Serenity 4K's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement 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

Code Rain is free to download; Serenity 4K costs $2.99 up front. Code Rain sells 1 one-off in-app purchase. Serenity 4K asks for nothing beyond the download.

UpkeepUpdate frequency

Serenity 4K ships an update every 8 months, Code Rain every 3 months. The most recent releases landed on October 8, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
Serenity 4K versus Code Rain: the parameters behind the verdict, then further details
ParameterSerenity 4KCode Rain
Price$2.99Free — better
Rating—3.9 (14 ratings) — better
Positive reviews0.0% of reviews37.5% of reviews — better
Number of ratings—14 — better
Update frequencyEvery 8 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPod, Apple TV — betteriPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size29 MB4 MB
Age rating4+4+
DeveloperMach Software DesignHanquan Liang

Customer experience

Serenity 4K

Written reviews7 reviews
Positive0.0%
Neutral28.6%
Negative71.4%

Code Rain

All ratings11 ratings
Positive72.7%
Neutral0.0%
Negative27.3%
Written reviews8 reviews
Positive37.5%
Neutral12.5%
Negative50.0%

In-app purchases

None

Serenity 4K

No in-app purchases

1 purchases

Code Rain

One-time1
  • Pro$4.99

Questions

Is Serenity 4K free?
Serenity 4K costs $2.99, with no in-app purchases.
Is Code Rain free?
Code Rain is free to download, with in-app purchases available.
Do Serenity 4K or Code Rain have ads?
Neither Serenity 4K nor Code Rain shows ads.
Which is updated more often, Serenity 4K or Code Rain?
Serenity 4K ships an update every 8 months, and Code Rain every 3 months. Most recently, Serenity 4K was updated on October 8, 2026 and Code Rain on October 30, 2026.

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