# iPendulumWaves vs Wowu

The clearest difference is in-app purchases: iPendulumWaves at none against Wowu's 2. iPendulumWaves also leads on ads (none vs shown). Wowu's advantage is update cadence (every 5 months vs every 90 months) and iOS requirement (11.1 vs 13.0). On price and device support there is nothing between them.

Both are free to download. Wowu sells 2 in-app purchases, starting at $1.99 per month. iPendulumWaves asks for nothing beyond the download.

iPendulumWaves ships an update every 90 months, Wowu every 5 months. The most recent releases landed on August 26, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | iPendulumWaves | Wowu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (28 ratings)](https://appshunter.io/ios/app/wowu-pet-translator/id1509650591/reviews)** |
| Number of ratings | — | **28** |
| Positive reviews | — | 23.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 90 months | **Every 5 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 83 MB |
| Requires iOS | 13.0 | **11.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [fleron](https://appshunter.io/developer/549502195) | [楚婷 柯](https://appshunter.io/developer/1480380798) |

## What reviewers say

### iPendulumWaves

[App page](https://appshunter.io/ios/app/ipendulumwaves/id585690103)

Experience a 3D graphical simulation of "Pendulum Waves". Interact with the simulation using intuitive touch gestures for camera control, including dragging, pinching, and rotation. Double-tap to reset the camera to its default position.

**Highlights:** 3D graphical simulation, Pendulum Waves physics, 1-finger drag camera movement, 2-finger drag camera panning, Pinch to zoom camera, Rotation gesture for camera, Double tap to reset camera

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

**In-app purchases:** none


### Wowu

[App page](https://appshunter.io/ios/app/wowu-pet-translator/id1509650591)

This app aims to bridge the communication gap between pet owners and their cats and dogs. It offers a pet translator to convert human speech into animal sounds and provides a collection of animal sounds to engage pets. Additionally, it features downloadable HD pet wallpapers.

**Highlights:** Pet translator for cats and dogs, Cat and dog sound library, Downloadable HD pet wallpapers, Subscription for premium features

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Version | $1.99 | per month |
| Pro version | $4.99 | one-time |


## Frequently asked questions

### Is iPendulumWaves free?

iPendulumWaves is free to download, with no in-app purchases.

### Is Wowu free?

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

### Do iPendulumWaves or Wowu have ads?

Wowu shows ads; iPendulumWaves does not.

### Which is updated more often, iPendulumWaves or Wowu?

iPendulumWaves ships an update every 90 months, and Wowu every 5 months. Most recently, iPendulumWaves was updated on August 26, 2026 and Wowu on September 23, 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.*