# Knock Fever vs Bubble Surge!

The clearest difference is in-app purchases: Bubble Surge! at none against Knock Fever's 10. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Knock Fever sells 10 one-off in-app purchases. Bubble Surge! asks for nothing beyond the download.

Knock Fever ships an update weekly, Bubble Surge! every 5 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Knock Fever | Bubble Surge! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (11K ratings)](https://appshunter.io/ios/app/knock-fever/id6786195352/reviews)** | — |
| Number of ratings | **11K** | — |
| Positive reviews | 54.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 607 MB | 7 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Kite Games](https://appshunter.io/developer/1878111512) | [KIBU Global Ventures LLC](https://appshunter.io/developer/6777256092) |

## What reviewers say

### Knock Fever

[App page](https://appshunter.io/ios/app/knock-fever/id6786195352)

Aim your cannon precisely to blast down colorful towers in this physics-based destruction game. Enjoy hundreds of satisfying levels with simple controls and spectacular chain reactions. Become the ultimate cannon champion by strategically knocking down every structure.

**Highlights:** Physics-based destruction, Hundreds of unique levels, Satisfying chain reactions, Simple aim and shoot controls, Colorful tower smashing, Rewarding challenges

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Bundle | $1.99 | one-time |
| 1000 Coins Pack | $1.99 | one-time |
| Mini Bundle | $4.99 | one-time |
| No Ads | $7.99 | one-time |
| 5000 Coins Pack | $7.99 | one-time |
| Premium Bundle | $9.99 | one-time |
| 10000 Coins Pack | $14.99 | one-time |
| Deluxe Bundle | $19.99 | one-time |
| 25000 Coins Pack | $29.99 | one-time |
| Mega Bundle | $49.99 | one-time |


### Bubble Surge!

[App page](https://appshunter.io/ios/app/bubble-surge/id6786851553)

**In-app purchases:** none


## Frequently asked questions

### Is Knock Fever free?

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

### Is Bubble Surge! free?

Bubble Surge! is free to download, with no in-app purchases.

### Do Knock Fever or Bubble Surge! have ads?

Both Knock Fever and Bubble Surge! show ads.

### Which is updated more often, Knock Fever or Bubble Surge!?

Knock Fever ships an update weekly, and Bubble Surge! every 5 days. Most recently, Knock Fever was updated on November 8, 2026 and Bubble Surge! 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.*