# Rainy Glass vs Pendulum Wave 3D

The clearest difference is in-app purchases: Pendulum Wave 3D at none against Rainy Glass's 5. Pendulum Wave 3D also leads on ads (none vs shown). Rainy Glass's advantage is update cadence (every 3 days vs every 10 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Rainy Glass sells 5 one-off in-app purchases. Pendulum Wave 3D asks for nothing beyond the download.

Rainy Glass ships an update every 3 days, Pendulum Wave 3D every 10 days. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Rainy Glass | Pendulum Wave 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/rainy-glass/id6452275112/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 10 days |
| Monetization | Free with in-app purchases | — |
| Size | 128 MB | 10 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [onion c Inc.](https://appshunter.io/developer/475950680) | [Takashi Nemoto](https://appshunter.io/developer/6790828928) |

## What reviewers say

### Rainy Glass

[App page](https://appshunter.io/ios/app/rainy-glass/id6452275112)

Experience photorealistic virtual rain with customizable backgrounds. You can even use your device's camera feed as a backdrop. Enhance your experience with optional lightning effects and interactive screen wiping.

**Highlights:** Virtual photorealistic rain, Customizable background photos, Use device camera as background, Interactive screen wiping, Optional lightning effects

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Thunder Effect Access | $0.99 | one-time |
| Unlock firing thunder 2 | $0.99 | one-time |
| Camera Background Access | $1.99 | one-time |
| Unlock camera input 2 | $1.99 | one-time |
| Screen Recording Access | $2.99 | one-time |


### Pendulum Wave 3D

[App page](https://appshunter.io/ios/app/pendulum-wave-3d/id6794791818)

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

**In-app purchases:** none


## Frequently asked questions

### Is Rainy Glass free?

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

### Is Pendulum Wave 3D free?

Pendulum Wave 3D is free to download, with no in-app purchases.

### Do Rainy Glass or Pendulum Wave 3D have ads?

Rainy Glass shows ads; Pendulum Wave 3D does not.

### Which is updated more often, Rainy Glass or Pendulum Wave 3D?

Rainy Glass ships an update every 3 days, and Pendulum Wave 3D every 10 days. Most recently, Rainy Glass was updated on October 21, 2026 and Pendulum Wave 3D on October 24, 2026.

---

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