# Bubble Bobble 2 classic vs KeyQ Cosmic Defender

The clearest difference is in-app purchases: KeyQ Cosmic Defender at none against Bubble Bobble 2 classic's 6. KeyQ Cosmic Defender also leads on ads (none vs shown) and update cadence (daily vs every 3 months). Bubble Bobble 2 classic's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price there is nothing between them.

Both are free to download. Bubble Bobble 2 classic sells 6 one-off in-app purchases. KeyQ Cosmic Defender asks for nothing beyond the download.

Bubble Bobble 2 classic ships an update every 3 months, KeyQ Cosmic Defender daily. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Bubble Bobble 2 classic | KeyQ Cosmic Defender |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (23 ratings)](https://appshunter.io/ios/app/bubble-bobble-2-classic/id1592058494/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 51.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 205 MB | 18 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MOBIRIX](https://appshunter.io/developer/349276666) | [KeyQ, Inc.](https://appshunter.io/developer/1508673206) |

## What reviewers say

### Bubble Bobble 2 classic

[App page](https://appshunter.io/ios/app/bubble-bobble-2-classic/id1592058494)

Embark on a classic arcade adventure where you play as a bubble dragon, trapping enemies in bubbles and popping them to progress through magical worlds. Utilize unique character abilities and power-ups to overcome challenges and defeat bosses.

**Highlights:** Trap enemies in bubbles, Pop enemies with horns or scales, Auto-shot and gauge shot functions, Select stages after defeating bosses, Acquire power-up items, Gather E, X, T, E, N, D bubbles for extra lives

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Purchase 300 Dia | $2.99 | one-time |
| Purchase 500 Dia | $4.99 | one-time |
| Purchase 1,100 Dia | $9.99 | one-time |
| Purchase 3,600 Dia | $29.99 | one-time |
| Purchase 6,500 Dia | $49.99 | one-time |
| Purchase 15,000 Dia | $99.99 | one-time |


### KeyQ Cosmic Defender

[App page](https://appshunter.io/ios/app/keyq-cosmic-defender/id6752604812)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Bubble Bobble 2 classic free?

Bubble Bobble 2 classic is free to download, with in-app purchases available.

### Is KeyQ Cosmic Defender free?

KeyQ Cosmic Defender is free to download, with no in-app purchases.

### Do Bubble Bobble 2 classic or KeyQ Cosmic Defender have ads?

Bubble Bobble 2 classic shows ads; KeyQ Cosmic Defender does not.

### Which is updated more often, Bubble Bobble 2 classic or KeyQ Cosmic Defender?

Bubble Bobble 2 classic ships an update every 3 months, and KeyQ Cosmic Defender daily. Most recently, Bubble Bobble 2 classic was updated on October 27, 2026 and KeyQ Cosmic Defender on October 28, 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.*