# Brain Rush vs Zen Screw

The clearest difference is price: Zen Screw at Free against Brain Rush's $0.99. Brain Rush's advantage is in-app purchases (none vs 23) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Zen Screw is free to download; Brain Rush costs $0.99 up front. Zen Screw sells 23 one-off in-app purchases. Brain Rush asks for nothing beyond the download.

Brain Rush ships an update every 4 days, Zen Screw fortnightly. The most recent releases landed on October 18, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Brain Rush | Zen Screw |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.7 (3.1K ratings)](https://appshunter.io/ios/app/zen-screw/id6769321582/reviews)** |
| Number of ratings | — | **3.1K** |
| Positive reviews | — | 27.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 663 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenyang Yuzu Technology Co., Ltd](https://appshunter.io/developer/1845797307) | [Talefun](https://appshunter.io/developer/1440135076) |

## What reviewers say

### Brain Rush

[App page](https://appshunter.io/ios/app/brain-rush-mental-arithmetic/id6754001219)

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

**In-app purchases:** none


### Zen Screw

[App page](https://appshunter.io/ios/app/zen-screw/id6769321582)

Unwind with a satisfying 3D puzzle game that combines ASMR physics with color-sorting logic. Strategically remove and sort screws from intricate structures at your own pace, enjoying a calming sensory escape. This game offers a gentle brain workout with helpful boosters and a minimalist aesthetic.

**Highlights:** 3D spatial and color-sorting puzzles, Immersive ASMR relaxation with realistic sound effects, Intuitive gameplay with strategic depth, Zen Boosters for smooth progression, Minimalist UI and modern color palette, Offline play capability

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

**In-app purchases (23)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coin Pack 1 | $1.99 | one-time |
| Event 02 | $1.99 | one-time |
| Event 03 | $2.99 | one-time |
| Event 04 | $3.99 | one-time |
| Event 06 | $5.99 | one-time |
| Event 07 | $6.99 | one-time |
| Event 08 | $7.99 | one-time |
| Event 10 | $9.99 | one-time |
| Store Pack 1 | $9.99 | one-time |
| Event 11 | $10.99 | one-time |
| No Ads Pack | $10.99 | one-time |
| Coin Pack 3 | $14.99 | one-time |
| Store Pack 2 | $19.99 | one-time |
| Event 34 | $33.99 | one-time |
| Event 37 | $36.99 | one-time |
| Event 39 | $38.99 | one-time |
| Event 40 | $39.99 | one-time |
| Event 41 | $49.99 | one-time |
| Event 42 | $59.99 | one-time |
| Event 43 | $69.99 | one-time |
| Event 44 | $79.99 | one-time |
| Event 45 | $89.99 | one-time |
| Event 46 | $99.99 | one-time |


## Frequently asked questions

### Is Brain Rush free?

Brain Rush costs $0.99, with no in-app purchases.

### Is Zen Screw free?

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

### Do Brain Rush or Zen Screw have ads?

Zen Screw shows ads; Brain Rush does not.

### Which is updated more often, Brain Rush or Zen Screw?

Brain Rush ships an update every 4 days, and Zen Screw fortnightly. Most recently, Brain Rush was updated on October 18, 2026 and Zen Screw on October 22, 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.*