# 指南针, GPS经纬度定位 & 大气压海拔测量仪 vs Compass

The clearest difference is update cadence: Compass at every 9 days against 指南针, GPS经纬度定位 & 大气压海拔测量仪's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 指南针, GPS经纬度定位 & 大气压海拔测量仪 sells 1 one-off in-app purchase and Compass sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

指南针, GPS经纬度定位 & 大气压海拔测量仪 ships an update monthly, Compass every 9 days. The most recent releases landed on September 9, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | 指南针, GPS经纬度定位 & 大气压海拔测量仪 | Compass |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 20 MB | 35 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [MCS Tech Co., Ltd](https://appshunter.io/developer/1585936484) | [宽 汪](https://appshunter.io/developer/1737109141) |

## What reviewers say

### 指南针, GPS经纬度定位 & 大气压海拔测量仪

[App page](https://appshunter.io/ios/app/gps-and/id1663606955)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 高级会员永久解锁 | $3.99 | one-time |


### Compass

[App page](https://appshunter.io/ios/app/compass-altimeter/id6483105242)

This app is a versatile outdoor tool offering compass navigation, real-time environmental data, and plant identification. It also includes practical gadgets, travel guides, and video tutorials for outdoor activities.

**Highlights:** Professional compass and navigation, Real-time altitude, pressure, and temperature, AI-powered plant identification, Outdoor travel guides and routes, Latitude and longitude positioning, Integrated outdoor gadgets (flashlight, ruler, spirit level)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week Premium Membership | $3.99 | per 7 days |
| 1 Week Premium Membership | $6.99 | per 7 days |
| 1 Year Premium Membership | $24.99 | per year |
| Permanent Senior Member | $19.99 | one-time |


## Frequently asked questions

### Is 指南针, GPS经纬度定位 & 大气压海拔测量仪 free?

指南针, GPS经纬度定位 & 大气压海拔测量仪 is free to download, with in-app purchases available.

### Is Compass free?

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

### Do 指南针, GPS经纬度定位 & 大气压海拔测量仪 or Compass have ads?

Neither 指南针, GPS经纬度定位 & 大气压海拔测量仪 nor Compass shows ads.

### Which is updated more often, 指南针, GPS经纬度定位 & 大气压海拔测量仪 or Compass?

指南针, GPS经纬度定位 & 大气压海拔测量仪 ships an update monthly, and Compass every 9 days. Most recently, 指南针, GPS经纬度定位 & 大气压海拔测量仪 was updated on September 9, 2026 and Compass on September 23, 2026.

---

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