# Guest vs 504 Express

Guest and 504 Express 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.

Guest ships an update every 2 weeks, 504 Express monthly. The most recent releases landed on September 11, 2026 and August 5, 2026 respectively.

## The numbers

| Metric | Guest | 504 Express |
| --- | --- | --- |
| 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 2 weeks** | Monthly |
| Monetization | — | Free |
| Size | 26 MB | 58 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ESS-Electronics and System Solutions, S. de R.L. de C.V](https://appshunter.io/developer/1679188957) | [SISOFTC](https://appshunter.io/developer/1302911829) |

## What reviewers say

### Guest

[App page](https://appshunter.io/ios/app/guest/id6446804878)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Guest free?

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

### Is 504 Express free?

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

### Do Guest or 504 Express have ads?

Neither Guest nor 504 Express shows ads.

### Which is updated more often, Guest or 504 Express?

Guest ships an update every 2 weeks, and 504 Express monthly. Most recently, Guest was updated on September 11, 2026 and 504 Express on August 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.*