# Vigilance Viewer vs GSCT

The clearest difference is iOS requirement: GSCT at 12.0 against Vigilance Viewer's 14.7. 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.

Vigilance Viewer ships an update every 5 months, GSCT every 6 months. The most recent releases landed on September 14, 2026 and March 6, 2026 respectively.

## The numbers

| Metric | Vigilance Viewer | GSCT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 6 months |
| Size | 93 MB | 13 MB |
| Requires iOS | 14.7 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Otus Imaging](https://appshunter.io/developer/942830508) | [STAR TELECOM Co; LTD](https://appshunter.io/developer/542281755) |

## What reviewers say

### Vigilance Viewer

[App page](https://appshunter.io/ios/app/vigilance-viewer/id1555401841)

**Features:** macOS Compatibility

**In-app purchases:** none


### GSCT

[App page](https://appshunter.io/ios/app/gsct/id1637334561)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Vigilance Viewer free?

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

### Is GSCT free?

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

### Do Vigilance Viewer or GSCT have ads?

Neither Vigilance Viewer nor GSCT shows ads.

### Which is updated more often, Vigilance Viewer or GSCT?

Vigilance Viewer ships an update every 5 months, and GSCT every 6 months. Most recently, Vigilance Viewer was updated on September 14, 2026 and GSCT on March 6, 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.*