# Rainy Relax 4K vs Gradient System

The clearest difference is in-app purchases: Gradient System at none against Rainy Relax 4K's 2. Rainy Relax 4K's advantage is iOS requirement (15.0 vs 26.0). On price, ads and device support there is nothing between them.

Rainy Relax 4K costs $0.99 and Gradient System $0.99 up front. Rainy Relax 4K sells 2 in-app purchases, starting at $0.99 per month. Gradient System asks for nothing beyond the download.

## The numbers

| Metric | Rainy Relax 4K | Gradient System |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 59 MB | 1.4 GB |
| Requires iOS | **15.0** | 26.0 |
| Devices | iPhone, iPad, iPod, Apple TV | **iPhone, iPad, Mac, Apple TV, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [KISSAPP, S.L.](https://appshunter.io/developer/552812711) | [Pieter Hartzenberg](https://appshunter.io/developer/495577297) |

## What reviewers say

### Rainy Relax 4K

[App page](https://appshunter.io/ios/app/rainy-relax-4k/id6737191959)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rainy Relax Full Version | $0.99 | per month |
| Rainy Relax Full Version | $9.99 | per year |


### Gradient System

[App page](https://appshunter.io/ios/app/gradient-system/id6744294353)

**In-app purchases:** none


## Frequently asked questions

### Is Rainy Relax 4K free?

Rainy Relax 4K costs $0.99, and also offers in-app purchases.

### Is Gradient System free?

Gradient System costs $0.99, with no in-app purchases.

### Do Rainy Relax 4K or Gradient System have ads?

Neither Rainy Relax 4K nor Gradient System shows ads.

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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.*