# Image Saliency vs Device Signal Detector Spy Pro

The clearest difference is in-app purchases: Image Saliency at none against Device Signal Detector Spy Pro's 4. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Device Signal Detector Spy Pro sells 4 in-app purchases, starting at $8.99 per 7 days. Image Saliency asks for nothing beyond the download.

## The numbers

| Metric | Image Saliency | Device Signal Detector Spy Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (7 ratings)](https://appshunter.io/ios/app/device-signal-detector-spy-pro/id6746758038/reviews)** |
| Number of ratings | — | **7** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | — |
| Monetization | — | Free with in-app purchases |
| Size | 38 MB | 23 MB |
| Requires iOS | 17.7.2 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [Xander Renson](https://appshunter.io/developer/1818350152) |

## What reviewers say

### Image Saliency

[App page](https://appshunter.io/ios/app/image-saliency/id6511211544)

**Features:** macOS Compatibility

**In-app purchases:** none


### Device Signal Detector Spy Pro

[App page](https://appshunter.io/ios/app/device-signal-detector-spy-pro/id6746758038)

Detects nearby wireless activity and connected devices using Wi-Fi and Bluetooth scanning. Features an infrared tool to visually identify potential hidden electronics. Organizes scan history and provides insights for understanding results and staying aware of your surroundings.

**Highlights:** Wi-Fi and Bluetooth scanning, Infrared (IR) scanning tool, Scan history organization, Real-time detection, IP history tracking, Ad-free experience with subscription

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Device Signal Detector Spy Pro | $8.99 | per 7 days |
| dsdspWeekly | $8.99 | per 7 days |
| dsdspMonthly | $14.99 | per month |
| dsdspMonthlyTrial | $15.99 | per month |


## Frequently asked questions

### Is Image Saliency free?

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

### Is Device Signal Detector Spy Pro free?

Device Signal Detector Spy Pro is free to download, with in-app purchases available.

### Do Image Saliency or Device Signal Detector Spy Pro have ads?

Both Image Saliency and Device Signal Detector Spy Pro show ads.

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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.*