# 指南针 vs 海拔测量仪

The clearest difference is review sentiment: 海拔测量仪 at 89% against 指南针's 0%. 海拔测量仪 also leads on ads (none vs shown) and update cadence (every 9 days vs every 2 months). 指南针's advantage is in-app purchases (none vs 3) and iOS requirement (11.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. 海拔测量仪 sells 3 in-app purchases, starting at $4.99 per 7 days. 指南针 asks for nothing beyond the download.

指南针 ships an update every 2 months, 海拔测量仪 every 9 days. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | 指南针 | 海拔测量仪 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (97 ratings)](https://appshunter.io/ios/app/id1628282305/reviews)** | — |
| Number of ratings | **97** | — |
| Positive reviews | 0.0% of reviews | **89.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | **Ad-supported** | Subscription |
| Size | 41 MB | 33 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [娟 钟](https://appshunter.io/developer/1604186121) | [艳 杜](https://appshunter.io/developer/1671675512) |

## What reviewers say

### 指南针

[App page](https://appshunter.io/ios/app/id1628282305)

A professional compass app for outdoor adventures, offering essential tools like a flashlight, GPS, and astronomical navigation. It provides detailed environmental data and accurate positioning to prevent getting lost.

**Highlights:** Professional compass, Flashlight, GPS with latitude/longitude, Star finder, Sunrise/sunset times, Altitude and direction, Environmental data (magnetic field, air quality)

**Features:** macOS Compatibility

**In-app purchases:** none


### 海拔测量仪

[App page](https://appshunter.io/ios/app/id6499491694)

This app provides real-time outdoor data including altitude, weather, and location for activities like hiking and camping. It features a compass, route tracking, and a speed detector. Users can also take photos with custom data watermarks to share with friends.

**Highlights:** Real-time altitude and weather data, Compass for accurate direction, Route and altitude change recording, Speed detection for running/cycling, Photo watermarking with data, GPS location, pressure, UV index

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 专业版包周 | $4.99 | per 7 days |
| 专业版包月 | $9.99 | per month |
| 专业版包年 | $29.99 | per year |


## Frequently asked questions

### Is 指南针 free?

指南针 is free to download, with no in-app purchases.

### Is 海拔测量仪 free?

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

### Do 指南针 or 海拔测量仪 have ads?

指南针 shows ads; 海拔测量仪 does not.

### Which is updated more often, 指南针 or 海拔测量仪?

指南针 ships an update every 2 months, and 海拔测量仪 every 9 days. Most recently, 指南针 was updated on November 7, 2026 and 海拔测量仪 on November 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*