# 504 Express vs Guardian X

504 Express and Guardian X are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

504 Express ships an update every 5 weeks, Guardian X every 3 weeks. The most recent releases landed on October 25, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 504 Express | Guardian X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/504-express/id6475613266/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 58 MB | 17 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SISOFTC](https://appshunter.io/developer/1302911829) | [JORGE ALBERTO ORTIZ CERRATO](https://appshunter.io/developer/6782967152) |

## What reviewers say

### 504 Express

[App page](https://appshunter.io/ios/app/504-express/id6475613266)

Track your online purchases from the moment they arrive at your Miami locker. Receive notifications and full traceability with status bars and location windows. Access comprehensive support to stay informed about your shipments.

**Highlights:** Package tracking from Miami locker, Real-time notifications, Full shipment traceability, Status bar progress updates, Location windows, Comprehensive customer support

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

**In-app purchases:** none


### Guardian X

[App page](https://appshunter.io/ios/app/guardian-x/id6782967150)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 504 Express free?

504 Express is free to download, with no in-app purchases.

### Is Guardian X free?

Guardian X is free to download, with no in-app purchases.

### Do 504 Express or Guardian X have ads?

Neither 504 Express nor Guardian X shows ads.

### Which is updated more often, 504 Express or Guardian X?

504 Express ships an update every 5 weeks, and Guardian X every 3 weeks. Most recently, 504 Express was updated on October 25, 2026 and Guardian X on October 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.*