# REAL Barcode Authentication vs Sky Tower

The clearest difference is update cadence: REAL Barcode Authentication at every 2 months against Sky Tower's every 22 months. REAL Barcode Authentication also leads on iOS requirement (12.2 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

REAL Barcode Authentication ships an update every 2 months, Sky Tower every 22 months. The most recent releases landed on October 8, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | REAL Barcode Authentication | Sky Tower |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 22 months |
| Monetization | Free | — |
| Size | 56 MB | 117 MB |
| Requires iOS | **12.2** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GS1 Hong Kong Limited](https://appshunter.io/developer/376625223) | [e-Smart System](https://appshunter.io/developer/1382513704) |

## What reviewers say

### REAL Barcode Authentication

[App page](https://appshunter.io/ios/app/real-barcode-authentication/id1127715271)

This app uses your phone's camera to scan encrypted barcodes, providing instant product authentication and trusted information directly from brand owners. It helps identify counterfeit products and offers a way to report issues for further investigation.

**Highlights:** Scan encrypted barcodes, Instant product authentication, Obtain trusted product information, Use mobile camera for scanning, Automatic flashlight and hints, Report fake barcodes

**In-app purchases:** none


### Sky Tower

[App page](https://appshunter.io/ios/app/sky-tower/id1618208270)

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

**In-app purchases:** none


## Frequently asked questions

### Is REAL Barcode Authentication free?

REAL Barcode Authentication is free to download, with no in-app purchases.

### Is Sky Tower free?

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

### Do REAL Barcode Authentication or Sky Tower have ads?

Neither REAL Barcode Authentication nor Sky Tower shows ads.

### Which is updated more often, REAL Barcode Authentication or Sky Tower?

REAL Barcode Authentication ships an update every 2 months, and Sky Tower every 22 months. Most recently, REAL Barcode Authentication was updated on October 8, 2026 and Sky Tower on October 1, 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.*