# Brainify vs Random Zombie Defense

The clearest difference is ads: Brainify at none against Random Zombie Defense's shown. Random Zombie Defense's advantage is update cadence (every 2 days vs every 2 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Brainify sells 2 one-off in-app purchases and Random Zombie Defense sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Brainify ships an update every 2 weeks, Random Zombie Defense every 2 days. The most recent releases landed on March 7, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Brainify | Random Zombie Defense |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Size | 18 MB | 372 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Lorin Nicolae](https://appshunter.io/developer/1295191898) | [Yu Gyeom Kim](https://appshunter.io/developer/1766715281) |

## What reviewers say

### Brainify

[App page](https://appshunter.io/ios/app/brainify/id1485734413)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO | $1.99 | one-time |
| PRO+ | $3.99 | one-time |


### Random Zombie Defense

[App page](https://appshunter.io/ios/app/random-zombie-defense/id6739567560)

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gem 120 | $0.49 | one-time |
| 티켓 패키지 | $0.49 | one-time |
| 에너지 패키지 | $2.99 | one-time |
| Gems 600 | $3.99 | one-time |
| 열쇠 패키지 | $4.99 | one-time |
| 광고 제거 | $9.99 | one-time |
| Gem 1800 | $12.99 | one-time |
| Gem 3600 | $29.99 | one-time |
| VIP Plan | $29.99 | one-time |
| Gem 12000 | $99.99 | one-time |


## Frequently asked questions

### Is Brainify free?

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

### Is Random Zombie Defense free?

Random Zombie Defense is free to download, with in-app purchases available.

### Do Brainify or Random Zombie Defense have ads?

Random Zombie Defense shows ads; Brainify does not.

### Which is updated more often, Brainify or Random Zombie Defense?

Brainify ships an update every 2 weeks, and Random Zombie Defense every 2 days. Most recently, Brainify was updated on March 7, 2026 and Random Zombie Defense on September 18, 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.*