# Altimeter PRO with Compass vs 指南针

The clearest difference is review sentiment: 指南针 at 91% against Altimeter PRO with Compass's 0%. 指南针 also leads on rating (4.8 vs 4.0) and ads (none vs shown). Altimeter PRO with Compass's advantage is iOS requirement (10.0 vs 14.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Altimeter PRO with Compass sells 2 in-app purchases, starting at $0.99 per month and 指南针 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

指南针 holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: 指南针 has 45 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 0% of Altimeter PRO with Compass's written reviews are positive against 91% of 指南针's.

Altimeter PRO with Compass ships an update every 5 months, 指南针 every 3 months. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Altimeter PRO with Compass | 指南针 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (3 ratings)](https://appshunter.io/ios/app/altimeter-pro-with-compass/id1454246052/reviews) | **[4.8 (45 ratings)](https://appshunter.io/ios/app/gps/id6446302179/reviews)** |
| Number of ratings | 3 | **45** |
| Positive reviews | 0.0% of reviews | **90.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 11 MB | 4 MB |
| Requires iOS | **10.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [健 王](https://appshunter.io/developer/1287497439) | [智平 刘](https://appshunter.io/developer/1125861933) |

## What reviewers say

### Altimeter PRO with Compass

[App page](https://appshunter.io/ios/app/altimeter-pro-with-compass/id1454246052)

This app provides real-time altitude, GPS coordinates, and air pressure readings. It includes a built-in compass and map navigation features, ideal for outdoor activities. A watermarking camera function also records location data on photos.

**Highlights:** Real-time altitude measurement, Built-in compass, Map navigation with coordinates, Accurate GPS positioning, Watermarking camera for location data

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Altitude Monthly Member | $0.99 | per month |
| VIP: Remove Ads Service | $2.99 | one-time |


### 指南针

[App page](https://appshunter.io/ios/app/gps/id6446302179)

This app provides real-time environmental data including altitude, pressure, and GPS coordinates. It offers customizable display modes and supports both GPS and phone altimeter data sources. Designed for simplicity and efficiency, it ensures a clean, ad-free user experience.

**Highlights:** Altitude, pressure, and GPS data display, Switchable GPS or phone altimeter sources, Dark and light mode support, UI customization, Ad-free experience, Minimal resource usage

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 指南针PLUS 永久买断会员 | $1.99 | one-time |


## Frequently asked questions

### Is Altimeter PRO with Compass free?

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

### Is 指南针 free?

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

### Which has better reviews, Altimeter PRO with Compass or 指南针?

指南针 is rated higher. Altimeter PRO with Compass averages 4.0 out of 5 from 3 ratings, while 指南针 averages 4.8 from 45 ratings.

### Do Altimeter PRO with Compass or 指南针 have ads?

Altimeter PRO with Compass shows ads; 指南针 does not.

### Which is updated more often, Altimeter PRO with Compass or 指南针?

Altimeter PRO with Compass ships an update every 5 months, and 指南针 every 3 months. Most recently, Altimeter PRO with Compass was updated on October 7, 2026 and 指南针 on October 24, 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.*