# Pencil Rush 3D vs Stack Block

The clearest difference is update cadence: Stack Block at every 3 days against Pencil Rush 3D's every 5 weeks. Stack Block also leads on iOS requirement (10.0 vs 12.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Pencil Rush 3D ships an update every 5 weeks, Stack Block every 3 days. The most recent releases landed on September 25, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Pencil Rush 3D | Stack Block |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (44K ratings)](https://appshunter.io/ios/app/pencil-rush-3d/id1546059465/reviews)** | — |
| Number of ratings | **44K** | — |
| Positive reviews | 52.9% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | Ad-supported | — |
| Size | 235 MB | 73 MB |
| Requires iOS | 12.5 | **10.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gismart](https://appshunter.io/developer/666830030) | [Taptekinc](https://appshunter.io/developer/1577354312) |

## What reviewers say

### Pencil Rush 3D

[App page](https://appshunter.io/ios/app/pencil-rush-3d/id1546059465)

Embark on a vibrant obstacle course adventure, tracing paths with a colorful pencil. Collect more pencils to expand your color palette while skillfully dodging hazards. Reach the finish line to reveal a stunning, colorful creation.

**Highlights:** Trace and race on obstacle courses, Collect colorful pencils, Dodge obstacles to avoid game over, Create colorful collections, Vibrant 3D graphics

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

**In-app purchases:** none

**What reviewers like**

- 🎨 Satisfying art creation
- 🌈 Colorful and visually appealing
- 🕰️ Calming and relaxing gameplay

**What reviewers complain about**

- 💤 Repetitive painting options
- 📢 Excessive and intrusive advertisements
- 🔁 Lack of new content/levels

**Reported bugs**

- Glitches with special pencils
- Coins/rewards not saving properly
- Crashing or freezing issues

**Requested features**

- More unique painting options
- Ability to create custom artwork
- Reduced advertisements or paid ad-free version


### Stack Block

[App page](https://appshunter.io/ios/app/stack-block-stack-race/id1581560549)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pencil Rush 3D free?

Pencil Rush 3D is free to download, with no in-app purchases.

### Is Stack Block free?

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

### Do Pencil Rush 3D or Stack Block have ads?

Both Pencil Rush 3D and Stack Block show ads.

### Which is updated more often, Pencil Rush 3D or Stack Block?

Pencil Rush 3D ships an update every 5 weeks, and Stack Block every 3 days. Most recently, Pencil Rush 3D was updated on September 25, 2026 and Stack Block on September 15, 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.*