# YKSMART vs Spyf

The clearest difference is in-app purchases: YKSMART at none against Spyf's 4. YKSMART also leads on ads (none vs shown) and iOS requirement (9.0 vs 16.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Spyf sells 4 in-app purchases, starting at $8.99 per 7 days. YKSMART asks for nothing beyond the download.

YKSMART ships an update every 3 months, Spyf every 5 months. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | YKSMART | Spyf |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/spyf-hidden-device-detector/id6747833847/reviews)** |
| Number of ratings | — | **6** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 5 months |
| Monetization | — | Free with in-app purchases |
| Size | 73 MB | 49 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [云波 楼](https://appshunter.io/developer/1446242621) | [Sarah Davis](https://appshunter.io/developer/1823043379) |

## What reviewers say

### YKSMART

[App page](https://appshunter.io/ios/app/yksmart/id1446242622)

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

**In-app purchases:** none


### Spyf

[App page](https://appshunter.io/ios/app/spyf-hidden-device-detector/id6747833847)

Scan your surroundings for wireless activity and hidden electronics. Detect nearby Wi-Fi and Bluetooth devices, and use your phone's camera for infrared scanning to enhance privacy in public spaces. Review scan history to track changes over time.

**Highlights:** Wi-Fi and Bluetooth scanning, Infrared scanning with phone camera, Real-time monitoring, Device history and saved results, Ad-free Pro experience, IP tracking

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hidden Device Detector App · | $8.99 | per 7 days |
| Hidden Device Detector App · | $8.99 | per 7 days |
| Hidden Device Detector App · | $14.99 | per month |
| Hidden Device Detector App · | $15.99 | per month |


## Frequently asked questions

### Is YKSMART free?

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

### Is Spyf free?

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

### Do YKSMART or Spyf have ads?

Spyf shows ads; YKSMART does not.

### Which is updated more often, YKSMART or Spyf?

YKSMART ships an update every 3 months, and Spyf every 5 months. Most recently, YKSMART was updated on November 6, 2026 and Spyf on November 5, 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.*