# Kerflux vs Building Blocks Master

The clearest difference is price: Kerflux at Free against Building Blocks Master's $0.99. Kerflux also leads on update cadence (weekly vs every 12 months) and iOS requirement (6.0 vs 18.0). Building Blocks Master's advantage is in-app purchases (none vs 4). On ads and device support there is nothing between them.

Kerflux is free to download; Building Blocks Master costs $0.99 up front. Kerflux sells 4 one-off in-app purchases. Building Blocks Master asks for nothing beyond the download.

Kerflux ships an update weekly, Building Blocks Master every 12 months. The most recent releases landed on September 17, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Kerflux | Building Blocks Master |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.8 (323 ratings)](https://appshunter.io/ios/app/kerflux/id1127933116/reviews)** | — |
| Number of ratings | **323** | — |
| Positive reviews | 96.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 12 months |
| Monetization | Free with in-app purchases | — |
| Size | 57 MB | 1.1 GB |
| Requires iOS | **6.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Punk Labs LLC](https://appshunter.io/developer/1011541202) | [hideyuki kubo](https://appshunter.io/developer/897717221) |

## What reviewers say

### 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


### Building Blocks Master

[App page](https://appshunter.io/ios/app/building-blocks-master/id1488276789)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Kerflux free?

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

### Is Building Blocks Master free?

Building Blocks Master costs $0.99, with no in-app purchases.

### Do Kerflux or Building Blocks Master have ads?

Neither Kerflux nor Building Blocks Master shows ads.

### Which is updated more often, Kerflux or Building Blocks Master?

Kerflux ships an update weekly, and Building Blocks Master every 12 months. Most recently, Kerflux was updated on September 17, 2026 and Building Blocks Master on September 21, 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.*