# Brain Drain vs Bubble Shooter

The clearest difference is in-app purchases: Brain Drain at none against Bubble Shooter's 10. Brain Drain also leads on rating (5.0 vs 4.6) and iOS requirement (10.0 vs 15.0). Bubble Shooter's advantage is update cadence (every 3 months vs every 28 months) and ratings volume (164 vs 2). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Bubble Shooter sells 10 one-off in-app purchases. Brain Drain asks for nothing beyond the download.

Brain Drain holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Bubble Shooter has 164 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Brain Drain ships an update every 28 months, Bubble Shooter every 3 months. The most recent releases landed on October 15, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Brain Drain | Bubble Shooter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/brain-drain-a-quick-math-game/id1477237865/reviews)** | [4.6 (164 ratings)](https://appshunter.io/ios/app/bubble-shooter-pop-bubble/id1533676523/reviews) |
| Number of ratings | 2 | **164** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 28 months | **Every 3 months** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 92 MB | 164 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +4 |
| Developer | [Back Alley Technology](https://appshunter.io/developer/1477237864) | [Gui Studios](https://appshunter.io/developer/1116903190) |

## What reviewers say

### Brain Drain

[App page](https://appshunter.io/ios/app/brain-drain-a-quick-math-game/id1477237865)

Test your reflexes and quick math skills in this addictive brain game. Compete against friends and players worldwide on the leaderboard with challenging puzzles that boost IQ and memory.

**Highlights:** Quick calculations, Varied math sums (addition, subtraction, multiplication), Competitive global leaderboard, Fast reaction-based gameplay, Nuke power-up for challenging sums, Brain training for IQ and memory

**Features:** macOS Compatibility

**In-app purchases:** none


### Bubble Shooter

[App page](https://appshunter.io/ios/app/bubble-shooter-pop-bubble/id1533676523)

Engage in a classic bubble-popping puzzle experience. Match three or more colored balls to clear levels, train your brain, and rescue a princess. Enjoy offline gameplay with challenging stages and rewarding boosts.

**Highlights:** Match 3 colored balls, Unlock new levels, Brain training puzzles, Offline gameplay, Princess rescue missions, Powerful boosts and rewards

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 200 Gems | $0.99 | one-time |
| Five Lives | $0.99 | one-time |
| Two Hour Unlimited Lives | $0.99 | one-time |
| Prop Package | $0.99 | one-time |
| Level Package | $1.99 | one-time |
| 600 Gems | $2.99 | one-time |
| Funny Package | $2.99 | one-time |
| 1300 Gems | $3.99 | one-time |
| Removal of ads | $4.99 | one-time |
| 3000 Gems | $19.99 | one-time |


## Frequently asked questions

### Is Brain Drain free?

Brain Drain is free to download, with no in-app purchases.

### Is Bubble Shooter free?

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

### Which has better reviews, Brain Drain or Bubble Shooter?

Brain Drain is rated higher. Brain Drain averages 5.0 out of 5 from 2 ratings, while Bubble Shooter averages 4.6 from 164 ratings.

### Do Brain Drain or Bubble Shooter have ads?

Both Brain Drain and Bubble Shooter show ads.

### Which is updated more often, Brain Drain or Bubble Shooter?

Brain Drain ships an update every 28 months, and Bubble Shooter every 3 months. Most recently, Brain Drain was updated on October 15, 2026 and Bubble Shooter on October 8, 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.*