# Space Crab vs Sand Trace

The clearest difference is in-app purchases: Sand Trace at none against Space Crab's 6. Sand Trace also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.6). Space Crab's advantage is update cadence (every 3 days vs fortnightly). On price and ads there is nothing between them.

Both are free to download. Space Crab sells 6 one-off in-app purchases. Sand Trace asks for nothing beyond the download.

Space Crab ships an update every 3 days, Sand Trace fortnightly. Both last shipped on October 28, 2026.

## The numbers

| Metric | Space Crab | Sand Trace |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Fortnightly |
| Size | 47 MB | 22 MB |
| Requires iOS | 18.6 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CHI HO WONG](https://appshunter.io/developer/1863820141) | [HSIANG-YU HUANG](https://appshunter.io/developer/1155900519) |

## What reviewers say

### Space Crab

[App page](https://appshunter.io/ios/app/space-crab/id6756942205)

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TChalla | $1.00 | one-time |
| Genie | $1.00 | one-time |
| Bak Mei | $1.00 | one-time |
| Simpson | $1.00 | one-time |
| Kirby | $1.00 | one-time |
| no ad | $2.00 | one-time |


### Sand Trace

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Space Crab free?

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

### Is Sand Trace free?

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

### Do Space Crab or Sand Trace have ads?

Both Space Crab and Sand Trace show ads.

### Which is updated more often, Space Crab or Sand Trace?

Space Crab ships an update every 3 days, and Sand Trace fortnightly. Most recently, Space Crab was updated on October 28, 2026 and Sand Trace on October 28, 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.*