# Cyclope vs HeaderCheck

The clearest difference is in-app purchases: Cyclope at none against HeaderCheck's 1. Cyclope also leads on update cadence (every 4 days vs fortnightly) and iOS requirement (16.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. HeaderCheck sells 1 one-off in-app purchase. Cyclope asks for nothing beyond the download.

Cyclope ships an update every 4 days, HeaderCheck fortnightly. Both last shipped on October 31, 2026.

## The numbers

| Metric | Cyclope | HeaderCheck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/cyclope-ios/id6794725297/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Fortnightly |
| Monetization | Free | — |
| Size | 1 MB | 2 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Privateer](https://appshunter.io/developer/6794714317) | [Nicholas McLarty](https://appshunter.io/developer/1572125539) |

## What reviewers say

### Cyclope

[App page](https://appshunter.io/ios/app/cyclope-ios/id6794725297)

This utility app uses your iPhone's front camera to detect when someone is looking at your screen. It automatically dims the display to protect your privacy, then brightens it when you're alone. It works in real-time with all your apps, ensuring complete on-device privacy.

**Highlights:** Real-time gaze detection, Automatic screen dimming, Works with all apps, On-device processing, One-tap on/off, Intuitive interface

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

**In-app purchases:** none


### HeaderCheck

[App page](https://appshunter.io/ios/app/headercheck/id6809026356)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HeaderCheck Pro | $2.99 | one-time |


## Frequently asked questions

### Is Cyclope free?

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

### Is HeaderCheck free?

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

### Do Cyclope or HeaderCheck have ads?

Neither Cyclope nor HeaderCheck shows ads.

### Which is updated more often, Cyclope or HeaderCheck?

Cyclope ships an update every 4 days, and HeaderCheck fortnightly. Most recently, Cyclope was updated on October 31, 2026 and HeaderCheck on October 31, 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.*