# Check ETC 高速公路通行費試算 vs Hidden Camera Detector Pro++

The clearest difference is price: Check ETC 高速公路通行費試算 at Free against Hidden Camera Detector Pro++'s $0.99. Check ETC 高速公路通行費試算 also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). Hidden Camera Detector Pro++'s advantage is ads (none vs shown) and update cadence (weekly vs every 11 months). On in-app purchases there is nothing between them.

Check ETC 高速公路通行費試算 is free to download; Hidden Camera Detector Pro++ costs $0.99 up front. Check ETC 高速公路通行費試算 sells 1 one-off in-app purchase and Hidden Camera Detector Pro++ sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Check ETC 高速公路通行費試算 ships an update every 11 months, Hidden Camera Detector Pro++ weekly. The most recent releases landed on October 2, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Check ETC 高速公路通行費試算 | Hidden Camera Detector Pro++ |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 11 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 2 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jing Shin Chen](https://appshunter.io/developer/1092940039) | [三三 杨](https://appshunter.io/developer/1852457327) |

## What reviewers say

### Check ETC 高速公路通行費試算

[App page](https://appshunter.io/ios/app/check-etc/id1102857755)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Check ETC 專業版 | $0.99 | one-time |


### Hidden Camera Detector Pro++

[App page](https://appshunter.io/ios/app/hidden-camera-detector-pro-plus-plus/id6759914086)

This tool helps detect hidden surveillance devices using your phone's sensors. It scans for magnetic fields, infrared light, and connected Wi-Fi or Bluetooth devices to enhance your privacy and safety.

**Highlights:** Magnetic field detection, Infrared light scanning, Wi-Fi network scanning, Bluetooth device detection, Real-time feedback and alerts, Built-in detection guide

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $1.99 | per 7 days |
| Monthly Subscription | $6.99 | per month |
| Annual Subscription | $39.99 | per year |


## Frequently asked questions

### Is Check ETC 高速公路通行費試算 free?

Check ETC 高速公路通行費試算 is free to download, with in-app purchases available.

### Is Hidden Camera Detector Pro++ free?

Hidden Camera Detector Pro++ costs $0.99, and also offers in-app purchases.

### Do Check ETC 高速公路通行費試算 or Hidden Camera Detector Pro++ have ads?

Check ETC 高速公路通行費試算 shows ads; Hidden Camera Detector Pro++ does not.

### Which is updated more often, Check ETC 高速公路通行費試算 or Hidden Camera Detector Pro++?

Check ETC 高速公路通行費試算 ships an update every 11 months, and Hidden Camera Detector Pro++ weekly. Most recently, Check ETC 高速公路通行費試算 was updated on October 2, 2026 and Hidden Camera Detector Pro++ on October 8, 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.*