# Bubbu 2 vs BrainFlex!

The clearest difference is rating: BrainFlex! at 5.0 against Bubbu 2's 4.3. BrainFlex! also leads on review sentiment (100% vs 85%) and update cadence (every 2 weeks vs every 6 weeks). Bubbu 2's advantage is ratings volume (333 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Bubbu 2 sells 12 in-app purchases, starting at $1.99 per 7 days and BrainFlex! sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

BrainFlex! holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Bubbu 2 has 333 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 85% of Bubbu 2's written reviews are positive against 100% of BrainFlex!'s.

Bubbu 2 ships an update every 6 weeks, BrainFlex! every 2 weeks. The most recent releases landed on November 3, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Bubbu 2 | BrainFlex! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (333 ratings)](https://appshunter.io/ios/app/bubbu-2-my-pet-kingdom/id1665208380/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/brainflex/id6756278321/reviews)** |
| Number of ratings | **333** | 1 |
| Positive reviews | 84.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 472 MB | 37 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BUBADU information technology Ltd.](https://appshunter.io/developer/517313510) | [Hila LLC](https://appshunter.io/developer/1839257488) |

## What reviewers say

### Bubbu 2

[App page](https://appshunter.io/ios/app/bubbu-2-my-pet-kingdom/id1665208380)

Care for a virtual cat and explore a magical pet kingdom. Adopt pets, dress them up, play mini-games, and even visit the vet. Hatch new alien friends and create a vibrant world with your animal companions.

**Highlights:** Adopt and care for a virtual cat, Explore a colorful pet kingdom, Hatch and collect alien pets, Dress-up and fashion salon, Play dentist and doctor games, Engage in numerous mini-games

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bubbu 2 Weekly Subscription | $1.99 | per 7 days |
| Bubbu 2 Monthly Subscription | $7.99 | per month |
| Bubbu 2 Yearly Subscription | $44.99 | per year |
| Buy 5000 coins | $0.99 | one-time |
| Buy 50 diamonds | $1.99 | one-time |
| Buy 150 diamonds | $4.99 | one-time |
| Gold & Gem Boost | $4.99 | one-time |
| Buy 500 diamonds | $14.99 | one-time |
| Space Costume Party | $19.99 | one-time |
| Super Doctor Kit | $24.99 | one-time |
| Buy 1000 diamonds | $27.99 | one-time |
| Buy 5000 diamonds | $89.99 | one-time |

**What reviewers like**

- ❤️ Cute and adorable pet
- 🎮 Fun mini-games
- 🚀 Engaging gameplay
- 💻 Works offline
- 🎨 Customizable pet and environment

**What reviewers complain about**

- 🐛 Occasional bugs and glitches
- 🔍 Confusing or unclear features
- 🔋 High battery consumption
- 💰 Some content locked behind paywall

**Reported bugs**

- Chicken has 2 eyes instead of 3
- Slow download/installation process
- Unwanted ads even with VIP subscription

**Requested features**

- Add gender selection at the start
- Bring back original voice and animations
- Introduce Duddu 2 and Bubbu 3
- Improve loading times
- Remove VIP subscription requirement


### BrainFlex!

[App page](https://appshunter.io/ios/app/brainflex/id6756278321)

Engage in a cinematic trivia adventure that sharpens your mind with curated categories and dynamic challenges. Enjoy adaptive difficulty, immersive visuals, and audio that make daily brain training feel like a blockbuster experience. Compete with friends and unlock achievements to stay mentally agile.

**Highlights:** Cinematic trivia adventure, Curated categories, Dynamic streak challenges, Adaptive difficulty, Immersive visuals and audio, Themed achievements, Customizable focus soundtrack

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1,000 Stars | $0.99 | one-time |
| Remove Ads | $1.99 | one-time |
| 5000 Stars | $3.99 | one-time |
| 10,000 Stars | $6.99 | one-time |


## Frequently asked questions

### Is Bubbu 2 free?

Bubbu 2 is free to download, with in-app purchases available.

### Is BrainFlex! free?

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

### Which has better reviews, Bubbu 2 or BrainFlex!?

BrainFlex! is rated higher. Bubbu 2 averages 4.3 out of 5 from 333 ratings, while BrainFlex! averages 5.0 from 1 ratings.

### Do Bubbu 2 or BrainFlex! have ads?

Both Bubbu 2 and BrainFlex! show ads.

### Which is updated more often, Bubbu 2 or BrainFlex!?

Bubbu 2 ships an update every 6 weeks, and BrainFlex! every 2 weeks. Most recently, Bubbu 2 was updated on November 3, 2026 and BrainFlex! 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.*