# GPS海拔测量仪 vs Realtime Altimeter Pro

The clearest difference is price: GPS海拔测量仪 at Free against Realtime Altimeter Pro's $1.99. GPS海拔测量仪 also leads on update cadence (every 3 months vs every 22 months) and review sentiment (92% vs 68%). Realtime Altimeter Pro's advantage is in-app purchases (none vs 1). On rating, ads, device support and iOS requirement there is nothing between them.

GPS海拔测量仪 is free to download; Realtime Altimeter Pro costs $1.99 up front. GPS海拔测量仪 sells 1 in-app purchase, starting at $2.99 per year. Realtime Altimeter Pro asks for nothing beyond the download.

Realtime Altimeter Pro holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: GPS海拔测量仪 has 83 ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 92% of GPS海拔测量仪's written reviews are positive against 68% of Realtime Altimeter Pro's, so the app with the better star average is not the one people write more warmly about.

GPS海拔测量仪 ships an update every 3 months, Realtime Altimeter Pro every 22 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | GPS海拔测量仪 | Realtime Altimeter Pro |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [4.8 (83 ratings)](https://appshunter.io/ios/app/gps/id1598479189/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/realtime-altimeter-pro/id6736500613/reviews)** |
| Number of ratings | **83** | 8 |
| Positive reviews | **91.7% of reviews** | 68.2% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 3 months** | Every 22 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 66 MB | 2 MB |
| Requires iOS | **12.0** | 13 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [晨铭 李](https://appshunter.io/developer/1468077452) | [Zhenlai Xia](https://appshunter.io/developer/1435731218) |

## What reviewers say

### GPS海拔测量仪

[App page](https://appshunter.io/ios/app/gps/id1598479189)

This utility app provides real-time altitude, GPS coordinates, barometric pressure, and oxygen content. It offers accurate location data for outdoor activities and allows users to generate and share photos with location watermarks.

**Highlights:** Real-time altitude measurement, GPS coordinate tracking, Barometric pressure readings, Oxygen content monitoring, Location watermark photos, Outdoor activity data logging

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 年会员 | $2.99 | per year |


### Realtime Altimeter Pro

[App page](https://appshunter.io/ios/app/realtime-altimeter-pro/id6736500613)

Track your real-time altitude, speed, and direction without needing a network connection. Capture photos with embedded altitude and GPS data to document your journeys. Includes a free compass and barometer.

**Highlights:** Offline altitude tracking, Real-time compass, Velocimeter for speed measurement, Barometer, Watermark camera with GPS data, No ads

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

**In-app purchases:** none


## Frequently asked questions

### Is GPS海拔测量仪 free?

GPS海拔测量仪 is free to download, with in-app purchases available.

### Is Realtime Altimeter Pro free?

Realtime Altimeter Pro costs $1.99, with no in-app purchases.

### Which has better reviews, GPS海拔测量仪 or Realtime Altimeter Pro?

Realtime Altimeter Pro is rated higher. GPS海拔测量仪 averages 4.8 out of 5 from 83 ratings, while Realtime Altimeter Pro averages 5.0 from 8 ratings.

### Do GPS海拔测量仪 or Realtime Altimeter Pro have ads?

Both GPS海拔测量仪 and Realtime Altimeter Pro show ads.

### Which is updated more often, GPS海拔测量仪 or Realtime Altimeter Pro?

GPS海拔测量仪 ships an update every 3 months, and Realtime Altimeter Pro every 22 months. Most recently, GPS海拔测量仪 was updated on October 30, 2026 and Realtime Altimeter Pro on October 30, 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.*