# Server Sys vs Spy Detector

The clearest difference is price: Spy Detector at Free against Server Sys's $8.99. Spy Detector also leads on update cadence (monthly vs every 12 months). Server Sys's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

Spy Detector is free to download; Server Sys costs $8.99 up front. Spy Detector sells 3 in-app purchases, starting at $6.99 per 7 days. Server Sys asks for nothing beyond the download.

Server Sys ships an update every 12 months, Spy Detector monthly. The most recent releases landed on December 1, 2025 and October 6, 2026 respectively.

## The numbers

| Metric | Server Sys | Spy Detector |
| --- | --- | --- |
| Price | $8.99 | **Free** |
| Rating | — | **[4.8 (12 ratings)](https://appshunter.io/ios/app/spy-detector-security-scanner/id6751642484/reviews)** |
| Number of ratings | — | **12** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 63 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [瑞 张](https://appshunter.io/developer/1589446576) | [胭 李](https://appshunter.io/developer/1775102138) |

## What reviewers say

### Server Sys

[App page](https://appshunter.io/ios/app/server-sys/id1589446574)

**Features:** macOS Compatibility

**In-app purchases:** none


### Spy Detector

[App page](https://appshunter.io/ios/app/spy-detector-security-scanner/id6751642484)

This app helps you enhance your personal security by scanning your surroundings for unauthorized devices and unusual reflections. It offers quick checks and an intuitive interface to provide peace of mind in various locations.

**Highlights:** Network scan for unknown devices, Bluetooth device detection, Light and reflection filter, Quick instant scans, Intuitive user interface

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spy Detector Pro Week | $6.99 | per 7 days |
| Spy Detector Pro Month | $14.99 | per month |
| Spy Detector Pro year | $29.99 | per year |


## Frequently asked questions

### Is Server Sys free?

Server Sys costs $8.99, with no in-app purchases.

### Is Spy Detector free?

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

### Do Server Sys or Spy Detector have ads?

Neither Server Sys nor Spy Detector shows ads.

### Which is updated more often, Server Sys or Spy Detector?

Server Sys ships an update every 12 months, and Spy Detector monthly. Most recently, Server Sys was updated on December 1, 2025 and Spy Detector on October 6, 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.*