# 海拔测量仪 vs Compass

The clearest difference is monetization model: Compass at free with in-app purchases against 海拔测量仪's subscription. Compass also leads on review sentiment (100% vs 89%). 海拔测量仪's advantage is ads (none vs shown). On price, update cadence, in-app purchases 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 and Compass sells 4 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

海拔测量仪 ships an update every 9 days, Compass every 5 days. The most recent releases landed on October 10, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | 海拔测量仪 | Compass |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/compassguide-precisely/id6756476417/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 89.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 days | **Every 5 days** |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 33 MB | 27 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [艳 杜](https://appshunter.io/developer/1671675512) | [变变 王](https://appshunter.io/developer/1801975852) |

## What reviewers say

### 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 |


### Compass

[App page](https://appshunter.io/ios/app/compassguide-precisely/id6756476417)

This navigation app provides a precise digital compass, real-time weather, detailed coordinates, and interactive maps. It's designed for explorers and travelers needing essential location-based information.

**Highlights:** Accurate digital compass, Coordinates and location details, Live weather information, Current address and map view, Altitude and elevation tracker, Offline functionality

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| This is for you | $9.99 | per 7 days |
| This is for you | $25.99 | per 3 months |
| This is for you | $41.99 | per year |
| This is for you | $2.99 | one-time |


## Frequently asked questions

### Is 海拔测量仪 free?

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

### Is Compass free?

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

### Do 海拔测量仪 or Compass have ads?

Compass shows ads; 海拔测量仪 does not.

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

海拔测量仪 ships an update every 9 days, and Compass every 5 days. Most recently, 海拔测量仪 was updated on October 10, 2026 and Compass on September 28, 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.*