# Realtime Altimeter vs 摄像头检测

The clearest difference is review sentiment: Realtime Altimeter at 77% against 摄像头检测's 20%. 摄像头检测's advantage is ads (none vs shown) and update cadence (every 3 days vs every 2 weeks). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Realtime Altimeter sells 1 one-off in-app purchase and 摄像头检测 sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Realtime Altimeter ships an update every 2 weeks, 摄像头检测 every 3 days. The most recent releases landed on October 19, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Realtime Altimeter | 摄像头检测 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (403 ratings)](https://appshunter.io/ios/app/realtime-altimeter/id1039285626/reviews)** | — |
| Number of ratings | **403** | — |
| Positive reviews | **76.9% of reviews** | 20.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 6 MB | 11 MB |
| Requires iOS | **13** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zhenlai Xia](https://appshunter.io/developer/1435731218) | [浩 余](https://appshunter.io/developer/1476688075) |

## What reviewers say

### Realtime Altimeter

[App page](https://appshunter.io/ios/app/realtime-altimeter/id1039285626)

This app provides real-time altitude readings, even without an internet connection. It also includes a compass, velocimeter, and a camera that can watermark photos with location data, making it ideal for travelers and outdoor adventurers.

**Highlights:** Offline altimeter, Real-time altitude, Integrated compass, Velocimeter for speed, Watermark camera with GPS data

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |

**What reviewers like**

- 📸 Captures photos with altitude watermark
- ✈️ Useful for travel and outdoor activities
- 🆓 Free to use
- 👍 Very practical and useful
- 📍 Provides location and altitude information

**What reviewers complain about**

- 🧭 Compass missing East/West points
- 📉 Barometric pressure inaccurate
- ⚖️ Altitude readings fluctuate
- 📷 Cannot take landscape photos
- 📶 Not always immediate altitude reaction without network

**Reported bugs**

- Compass missing cardinal points
- Inaccurate barometric pressure readings
- Fluctuating and inaccurate altitude readings
- Watch app not installing after purchase
- Altimeter not working during flight

**Requested features**

- Announce current altitude based on time or altitude
- Larger font size for speed readout
- Option to switch altitude and speed display positions
- Convert camera location address to text
- Add barometric pressure display


### 摄像头检测

[App page](https://appshunter.io/ios/app/id6446337716)

This app helps you detect hidden cameras in enclosed spaces. It scans your Wi-Fi network and uses your phone's camera to identify suspicious devices and infrared signals, ensuring your privacy and security while traveling.

**Highlights:** Wi-Fi network scanning for suspicious devices, Infrared detection for hidden cameras, Real-time device information, Distinguishes between safe and suspicious devices, Anti-peeping safety guides

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员服务 | $3.99 | per 7 days |
| 月会员服务 | $9.99 | per month |
| 年会员服务 | $29.99 | per year |


## Frequently asked questions

### Is Realtime Altimeter free?

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

### Is 摄像头检测 free?

摄像头检测 is free to download, with in-app purchases available.

### Do Realtime Altimeter or 摄像头检测 have ads?

Realtime Altimeter shows ads; 摄像头检测 does not.

### Which is updated more often, Realtime Altimeter or 摄像头检测?

Realtime Altimeter ships an update every 2 weeks, and 摄像头检测 every 3 days. Most recently, Realtime Altimeter was updated on October 19, 2026 and 摄像头检测 on October 17, 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.*