# Sand Trace vs TOWER 68

The clearest difference is iOS requirement: Sand Trace at 13.0 against TOWER 68's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Sand Trace | TOWER 68 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | Fortnightly |
| Size | 22 MB | 66 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HSIANG-YU HUANG](https://appshunter.io/developer/1155900519) | [Jaehyuk Ko](https://appshunter.io/developer/1502522891) |

## 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


### TOWER 68

[App page](https://appshunter.io/ios/app/tower-68-air-traffic-control/id6790672799)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sand Trace free?

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

### Is TOWER 68 free?

TOWER 68 is free to download, with no in-app purchases.

### Do Sand Trace or TOWER 68 have ads?

Both Sand Trace and TOWER 68 show ads.

### Which is updated more often, Sand Trace or TOWER 68?

Sand Trace ships an update fortnightly, and TOWER 68 fortnightly. Most recently, Sand Trace was updated on October 31, 2026 and TOWER 68 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.*