# 视觉健康－眼健康管理系统 vs 指南针, GPS经纬度定位 & 大气压海拔测量仪

The clearest difference is in-app purchases: 视觉健康－眼健康管理系统 at none against 指南针, GPS经纬度定位 & 大气压海拔测量仪's 1. 视觉健康－眼健康管理系统 also leads on iOS requirement (8.0 vs 13.0). On price, update cadence, ads 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. 视觉健康－眼健康管理系统 asks for nothing beyond the download.

视觉健康－眼健康管理系统 ships an update every 3 weeks, 指南针, GPS经纬度定位 & 大气压海拔测量仪 monthly. The most recent releases landed on September 28, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 视觉健康－眼健康管理系统 | 指南针, GPS经纬度定位 & 大气压海拔测量仪 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 25 MB | 20 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tianjin Suowei Electronic Technology Co .,Ltd](https://appshunter.io/developer/990160474) | [MCS Tech Co., Ltd](https://appshunter.io/developer/1585936484) |

## What reviewers say

### 视觉健康－眼健康管理系统

[App page](https://appshunter.io/ios/app/id1025680464)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is 视觉健康－眼健康管理系统 free?

视觉健康－眼健康管理系统 is free to download, with no in-app purchases.

### 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.

### Do 视觉健康－眼健康管理系统 or 指南针, GPS经纬度定位 & 大气压海拔测量仪 have ads?

Neither 视觉健康－眼健康管理系统 nor 指南针, GPS经纬度定位 & 大气压海拔测量仪 shows ads.

### Which is updated more often, 视觉健康－眼健康管理系统 or 指南针, GPS经纬度定位 & 大气压海拔测量仪?

视觉健康－眼健康管理系统 ships an update every 3 weeks, and 指南针, GPS经纬度定位 & 大气压海拔测量仪 monthly. Most recently, 视觉健康－眼健康管理系统 was updated on September 28, 2026 and 指南针, GPS经纬度定位 & 大气压海拔测量仪 on October 5, 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.*