# Serenity 4K vs Code Rain

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.

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.

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.

## The numbers

| Metric | Serenity 4K | Code Rain |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[3.9 (14 ratings)](https://appshunter.io/ios/app/code-rain/id1667722294/reviews)** |
| Number of ratings | — | **14** |
| Positive reviews | 0.0% of reviews | **37.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 29 MB | 4 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mach Software Design](https://appshunter.io/developer/327826899) | [Hanquan Liang](https://appshunter.io/developer/1607751967) |

## What reviewers say

### Serenity 4K

[App page](https://appshunter.io/ios/app/serenity-4k-ultra-hd-video/id1110204270)

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:** Vision Pro support

**In-app purchases:** none


### Code Rain

[App page](https://appshunter.io/ios/app/code-rain/id1667722294)

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:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $4.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*