# 海拔测试仪 vs 指南针

The clearest difference is in-app purchases: 海拔测试仪 at none against 指南针's 3. 海拔测试仪 also leads on ads (none vs shown) and iOS requirement (14.0 vs 16.0). 指南针's advantage is update cadence (every 2 days vs weekly). On price and device support there is nothing between them.

Both are free to download. 指南针 sells 3 in-app purchases, starting at $6.99 per 7 days. 海拔测试仪 asks for nothing beyond the download.

海拔测试仪 ships an update weekly, 指南针 every 2 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 海拔测试仪 | 指南针 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id6739829542/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 90.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Free | — |
| Size | 13 MB | 36 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [观艳 谭](https://appshunter.io/developer/1745017384) | [BIQUDE](https://appshunter.io/developer/6788007048) |

## What reviewers say

### 海拔测试仪

[App page](https://appshunter.io/ios/app/id6739829542)

This app serves as a professional outdoor companion, offering real-time altitude measurement and a precise compass for navigation. It also features identification tools for plants and animals, along with GPS-based speed and location tracking.

**Highlights:** Real-time altitude measurement, Precise compass and GPS, Plant and animal identification, Location tracking, GPS speed measurement

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

**In-app purchases:** none


### 指南针

[App page](https://appshunter.io/ios/app/gps/id6758391610)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员订阅 | $6.99 | per 7 days |
| 月会员订阅 | $14.99 | per month |
| 年会员订阅 | $29.99 | per year |


## Frequently asked questions

### Is 海拔测试仪 free?

海拔测试仪 is free to download, with no in-app purchases.

### Is 指南针 free?

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

### Do 海拔测试仪 or 指南针 have ads?

指南针 shows ads; 海拔测试仪 does not.

### Which is updated more often, 海拔测试仪 or 指南针?

海拔测试仪 ships an update weekly, and 指南针 every 2 days. Most recently, 海拔测试仪 was updated on October 30, 2026 and 指南针 on October 25, 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.*