# Sentry vs Argus

Sentry and Argus 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. Sentry sells 4 in-app purchases, starting at $9.99 per 7 days and Argus sells 2 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on September 18, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Sentry | Argus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Size | 16 MB | 35 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MD. NASAR UDDIN REDOY](https://appshunter.io/developer/1653522796) | [Roman Hadiiev](https://appshunter.io/developer/6790475860) |

## What reviewers say

### Sentry

[App page](https://appshunter.io/ios/app/sentry-hidden-camera-scan/id6782903690)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sentry Pro (Weekly) | $9.99 | per 7 days |
| Sentry Pro (Yearly) | $59.99 | per year |
| Sentry Pro Lifetime | $99.99 | one-time |
| Sentry Pro Lifetime | $149.99 | one-time |


### Argus

[App page](https://appshunter.io/ios/app/argus-hidden-camera-detector/id6790475588)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $7.99 | per 7 days |
| Yearly | $49.99 | per year |


## Frequently asked questions

### Is Sentry free?

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

### Is Argus free?

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

### Do Sentry or Argus have ads?

Neither Sentry nor Argus shows ads.

### Which is updated more often, Sentry or Argus?

Sentry ships an update fortnightly, and Argus fortnightly. Most recently, Sentry was updated on September 18, 2026 and Argus on September 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*