# Sand Trace vs Stackitecture

The clearest difference is in-app purchases: Sand Trace at none against Stackitecture's 1. Sand Trace also leads on iOS requirement (13.0 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Stackitecture sells 1 one-off in-app purchase. Sand Trace asks for nothing beyond the download.

Sand Trace ships an update fortnightly, Stackitecture every 11 days. The most recent releases landed on October 31, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Sand Trace | Stackitecture |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Every 11 days** |
| Size | 22 MB | 49 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HSIANG-YU HUANG](https://appshunter.io/developer/1155900519) | [Danjel Durmo](https://appshunter.io/developer/1815835614) |

## What reviewers say

### Sand Trace

[App page](https://appshunter.io/ios/app/sand-trace-pixel-physics-sim/id6759260956)

**Features:** macOS Compatibility

**In-app purchases:** none


### Stackitecture

[App page](https://appshunter.io/ios/app/stackitecture/id6761286324)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Sand Trace free?

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

### Is Stackitecture free?

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

### Do Sand Trace or Stackitecture have ads?

Both Sand Trace and Stackitecture show ads.

### Which is updated more often, Sand Trace or Stackitecture?

Sand Trace ships an update fortnightly, and Stackitecture every 11 days. Most recently, Sand Trace was updated on October 31, 2026 and Stackitecture on November 7, 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.*