# Unspy vs SentryBlack

The clearest difference is ads: Unspy at none against SentryBlack's shown. SentryBlack's advantage is device support (3 vs 1). On price, update cadence, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Unspy sells 1 in-app purchase, starting at $9.99 per month and SentryBlack sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Unspy ships an update every 9 days, SentryBlack fortnightly. The most recent releases landed on October 19, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Unspy | SentryBlack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Fortnightly |
| Size | 3 MB | 17 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Akbarali Xasanov](https://appshunter.io/developer/6775700244) | [Matthew Wong](https://appshunter.io/developer/6774040057) |

## What reviewers say

### Unspy

[App page](https://appshunter.io/ios/app/unspy-hidden-camera-detector/id6790170844)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sentri Pro | $9.99 | per month |


### SentryBlack

[App page](https://appshunter.io/ios/app/sentryblack-security-camera/id6790313702)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SentryBlack Pro (Monthly) | $4.99 | per month |
| SentryBlack Pro (Yearly) | $29.99 | per year |


## Frequently asked questions

### Is Unspy free?

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

### Is SentryBlack free?

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

### Do Unspy or SentryBlack have ads?

SentryBlack shows ads; Unspy does not.

### Which is updated more often, Unspy or SentryBlack?

Unspy ships an update every 9 days, and SentryBlack fortnightly. Most recently, Unspy was updated on October 19, 2026 and SentryBlack on October 3, 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.*