# Lung Challenge vs Green Alien Cat Dance Filter

The clearest difference is update cadence: Lung Challenge at daily against Green Alien Cat Dance Filter's every 4 months. Lung Challenge also leads on iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Lung Challenge ships an update daily, Green Alien Cat Dance Filter every 4 months. Both last shipped on October 31, 2026.

## The numbers

| Metric | Lung Challenge | Green Alien Cat Dance Filter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.9 (16 ratings)](https://appshunter.io/ios/app/green-alien-cat-dance-filter/id6761823546/reviews)** |
| Number of ratings | — | **16** |
| Positive reviews | — | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Daily** | Every 4 months |
| Monetization | — | Ad-supported |
| Size | 100 MB | 95 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nam Tran Van](https://appshunter.io/developer/1823171023) | [NGUYEN QUY SON](https://appshunter.io/developer/1713872645) |

## What reviewers say

### Lung Challenge

[App page](https://appshunter.io/ios/app/lung-challenge-breath-timer/id6758290885)

**In-app purchases:** none


### Green Alien Cat Dance Filter

[App page](https://appshunter.io/ios/app/green-alien-cat-dance-filter/id6761823546)

Add a playful green cat character to your videos and dance along. This filter makes everyday moments entertaining and shareable, letting you create fun clips to challenge friends. Enjoy smooth animations and easy-to-use controls for instant creativity.

**Highlights:** Dance with Green Cat character, Smooth and playful animations, Simple and easy to use interface, Create fun videos for sharing, Challenge friends with dance-offs

**In-app purchases:** none


## Frequently asked questions

### Is Lung Challenge free?

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

### Is Green Alien Cat Dance Filter free?

Green Alien Cat Dance Filter is free to download, with no in-app purchases.

### Do Lung Challenge or Green Alien Cat Dance Filter have ads?

Both Lung Challenge and Green Alien Cat Dance Filter show ads.

### Which is updated more often, Lung Challenge or Green Alien Cat Dance Filter?

Lung Challenge ships an update daily, and Green Alien Cat Dance Filter every 4 months. Most recently, Lung Challenge was updated on October 31, 2026 and Green Alien Cat Dance Filter on October 31, 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.*