# Shuttle Shuffle vs Kerflux

The clearest difference is ads: Kerflux at none against Shuttle Shuffle's shown. Kerflux also leads on update cadence (weekly vs every 3 months) and ratings volume (331 vs 6). On price, rating, review sentiment and in-app purchases there is nothing between them.

Both are free to download. Shuttle Shuffle sells 11 one-off in-app purchases and Kerflux sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Kerflux holds the better App Store score, 4.8 against 4.7. That said, the two scores are not equally well evidenced: Kerflux has 331 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 100% of Shuttle Shuffle's written reviews are positive against 96% of Kerflux's, so the app with the better star average is not the one people write more warmly about.

Shuttle Shuffle ships an update every 3 months, Kerflux weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Shuttle Shuffle | Kerflux |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (6 ratings)](https://appshunter.io/ios/app/shuttle-shuffle-aliens-panic/id937331329/reviews) | **[4.8 (331 ratings)](https://appshunter.io/ios/app/kerflux/id1127933116/reviews)** |
| Number of ratings | 6 | **331** |
| Positive reviews | **100.0% of reviews** | 96.2% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 80 MB | 57 MB |
| Requires iOS | 12.0 | **6.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lozange Lab](https://appshunter.io/developer/937331328) | [Punk Labs LLC](https://appshunter.io/developer/1011541202) |

## What reviewers say

### Shuttle Shuffle

[App page](https://appshunter.io/ios/app/shuttle-shuffle-aliens-panic/id937331329)

Guide scattered aliens back to their shuttle in this intuitive puzzle game. Create and share your own levels, or tackle hundreds of user-generated challenges. Enjoy a fun, family-friendly experience with no time limits.

**Highlights:** Integrated level editor, User-created levels, 72 campaign levels, 34 achievements, No time limit, Family-friendly

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pack of 20 hint points | $0.99 | one-time |
| Unlock World 2: Luna | $1.99 | one-time |
| Unlock World 3: Zigma | $1.99 | one-time |
| MegaPack of 45 hint points | $1.99 | one-time |
| MegaPack of 60 challenge tickets | $1.99 | one-time |
| MegaPack of 50 creation tickets | $1.99 | one-time |
| Unlock all levels of world 1 (Terra) | $2.99 | one-time |
| GigaPack of 100 hint points | $3.99 | one-time |
| GigaPack of 140 challenge tickets | $3.99 | one-time |
| TeraPack of 400 hint points | $12.99 | one-time |
| TeraPack of 560 challenge tickets | $12.99 | one-time |


### Kerflux

[App page](https://appshunter.io/ios/app/kerflux/id1127933116)

Engage your mind with a unique wave-based puzzle game. Slide and match intricate wave formations in a minimalist design. Enjoy retro music and unlock achievements as you progress through increasingly challenging levels.

**Highlights:** Original wave puzzle mechanics, Increasingly challenging levels, Retro style music, Achievements, Pay what you want pricing

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bronze Supporter | $0.99 | one-time |
| Silver Supporter | $1.99 | one-time |
| Gold Supporter | $3.99 | one-time |
| Platinum Supporter | $7.99 | one-time |

**What reviewers like**

- 👍 Simple to understand
- 👍 Visual challenge
- 👍 Awesome game with no ads
- 👍 Great puzzle experience
- 👍 Beautiful shapes

**What reviewers complain about**

- 🐛 Difficulty plateaus, endgame repetitive
- 🐛 Audio cues could be improved
- 🐛 Autoassist sensitivity can be too high

**Reported bugs**

- Music not working for some users

**Requested features**

- Ability to choose number of waves
- Add more than 4 waves for increased challenge
- Implement customizable autoassist sensitivity
- Add level select/replay option
- Introduce new mechanics at higher levels


## Frequently asked questions

### Is Shuttle Shuffle free?

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

### Is Kerflux free?

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

### Which has better reviews, Shuttle Shuffle or Kerflux?

Kerflux is rated higher. Shuttle Shuffle averages 4.7 out of 5 from 6 ratings, while Kerflux averages 4.8 from 331 ratings.

### Do Shuttle Shuffle or Kerflux have ads?

Shuttle Shuffle shows ads; Kerflux does not.

### Which is updated more often, Shuttle Shuffle or Kerflux?

Shuttle Shuffle ships an update every 3 months, and Kerflux weekly. Most recently, Shuttle Shuffle was updated on October 24, 2026 and Kerflux on October 24, 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.*