# Rainlayer vs Caffeine Sleep Planner

The clearest difference is review sentiment: Caffeine Sleep Planner at 100% against Rainlayer's 33%. Rainlayer's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Rainlayer sells 3 in-app purchases, starting at $5.99 per month and Caffeine Sleep Planner sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Rainlayer ships an update every 10 days, Caffeine Sleep Planner every 3 weeks. The most recent releases landed on October 1, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Rainlayer | Caffeine Sleep Planner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/caffeine-sleep-planner/id6773001853/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 49 MB | 2 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Franz Bruckhoff](https://appshunter.io/developer/399345216) | [Dustin Ober](https://appshunter.io/developer/1881347876) |

## What reviewers say

### Rainlayer

[App page](https://appshunter.io/ios/app/rainlayer-immersive-rain/id6744941675)

Experience lifelike 3D rain recordings for enhanced sleep, focus, and relaxation. This app offers a premium audio sanctuary with genuine nature sounds to help you unwind, block distractions, and achieve mental stillness.

**Highlights:** Genuine 3D rain recordings, Taptanium™-certified audio, Seamless soundscape transitions, Infinite play for uninterrupted calm, Sleep timer, Headphone-optimized 3D sound

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (1 Month) | $5.99 | per month |
| Premium (1 Year) | $39.99 | per year |
| Premium (1 Year) | $59.99 | per year |


### Caffeine Sleep Planner

[App page](https://appshunter.io/ios/app/caffeine-sleep-planner/id6773001853)

This app helps you track your caffeine intake and estimate when its effects will wear off. It provides a visual 24-hour decay chart and allows for custom entries. Widgets offer quick access to your current caffeine estimate.

**Highlights:** Log caffeine drinks, Estimate caffeine decay, Custom caffeine amounts, 24-hour decay chart, Home and Lock Screen widgets, On-device data storage

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip the Dev | $0.99 | one-time |


## Frequently asked questions

### Is Rainlayer free?

Rainlayer is free to download, with in-app purchases available.

### Is Caffeine Sleep Planner free?

Caffeine Sleep Planner is free to download, with in-app purchases available.

### Do Rainlayer or Caffeine Sleep Planner have ads?

Neither Rainlayer nor Caffeine Sleep Planner shows ads.

### Which is updated more often, Rainlayer or Caffeine Sleep Planner?

Rainlayer ships an update every 10 days, and Caffeine Sleep Planner every 3 weeks. Most recently, Rainlayer was updated on October 1, 2026 and Caffeine Sleep Planner on October 8, 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.*