# BrainCalcu vs Crazy Arena!

The clearest difference is in-app purchases: BrainCalcu at none against Crazy Arena!'s 10. BrainCalcu also leads on update cadence (daily vs every 2 weeks). Crazy Arena!'s advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price and ads there is nothing between them.

Both are free to download. Crazy Arena! sells 10 one-off in-app purchases. BrainCalcu asks for nothing beyond the download.

BrainCalcu ships an update daily, Crazy Arena! every 2 weeks. The most recent releases landed on October 27, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | BrainCalcu | Crazy Arena! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (24 ratings)](https://appshunter.io/ios/app/crazy-arena/id6754232354/reviews)** |
| Number of ratings | — | **24** |
| Positive reviews | — | 51.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Daily** | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 5 MB | 771 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 9+ |
| Developer | [Ghassan Jaam](https://appshunter.io/developer/1071543938) | [Crater Co., Ltd.](https://appshunter.io/developer/1060433596) |

## What reviewers say

### BrainCalcu

[App page](https://appshunter.io/ios/app/braincalcu/id6670341205)

**Features:** macOS Compatibility

**In-app purchases:** none


### Crazy Arena!

[App page](https://appshunter.io/ios/app/crazy-arena/id6754232354)

Engage in thrilling real-time PvP auto-battles where fighters clash until only one remains. Strategize with diverse characters, skills, and weapon evolutions to become the ultimate champion and earn fight money.

**Highlights:** Real-time PvP auto-battles, Diverse characters and skills, Weapon evolution and strategy, Fast-paced gameplay, Power-up choices, Mounts for speed and timing

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Pack 1 | $4.99 | one-time |
| VVIP Membership (30 Day) | $5.49 | one-time |
| Ad-Free World (Permanent) | $6.99 | one-time |
| Starter Pack 2 | $8.99 | one-time |
| Weapon Upgrade Daily Pack | $8.99 | one-time |
| Premium Season Pass | $9.99 | one-time |
| Gold Package2 | $10.99 | one-time |
| Crazy Pass | $17.99 | one-time |
| Space Dino Pack | $19.99 | one-time |
| Starlight Palace Pack Ⅵ | $35.99 | one-time |


## Frequently asked questions

### Is BrainCalcu free?

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

### Is Crazy Arena! free?

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

### Do BrainCalcu or Crazy Arena! have ads?

Both BrainCalcu and Crazy Arena! show ads.

### Which is updated more often, BrainCalcu or Crazy Arena!?

BrainCalcu ships an update daily, and Crazy Arena! every 2 weeks. Most recently, BrainCalcu was updated on October 27, 2026 and Crazy Arena! on November 5, 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.*