# 三力测试 vs 专业指南针

The clearest difference is iOS requirement: 三力测试 at 12.0 against 专业指南针's 15. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 三力测试 sells 2 one-off in-app purchases and 专业指南针 sells 4 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on September 9, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | 三力测试 | 专业指南针 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (5 ratings)](https://appshunter.io/ios/app/gps/id6752315093/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 14.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | Every 4 days |
| Monetization | — | Freemium |
| Size | 27 MB | 43 MB |
| Requires iOS | **12.0** | 15 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Weiqifu (Hangzhou) Technology Co., Ltd](https://appshunter.io/developer/1539840559) | [Hutui tech](https://appshunter.io/developer/1814030829) |

## What reviewers say

### 三力测试

[App page](https://appshunter.io/ios/app/2026/id6745166360)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 三力测试错题集 | $1.99 | one-time |
| 强化练习 | $1.99 | one-time |


### 专业指南针

[App page](https://appshunter.io/ios/app/gps/id6752315093)

This app offers precise directional guidance and location services, featuring a high-accuracy compass, altitude, and coordinate display. It also includes a smart level tool, real-time weather updates, and a camera that adds location-based watermarks to photos.

**Highlights:** High-accuracy electronic compass, Altitude and coordinate display, Smart level tool, Real-time weather information, Watermark camera with location data, Outdoor navigation and life assistant

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 立即使用专业指南针 | $6.99 | per 7 days |
| 立即使用 | $6.99 | per 7 days |
| 立即使用 | $6.99 | per 7 days |
| 立即使用专业指南针 | $29.99 | per year |


## Frequently asked questions

### Is 三力测试 free?

三力测试 is free to download, with in-app purchases available.

### Is 专业指南针 free?

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

### Do 三力测试 or 专业指南针 have ads?

Neither 三力测试 nor 专业指南针 shows ads.

### Which is updated more often, 三力测试 or 专业指南针?

三力测试 ships an update every 4 days, and 专业指南针 every 4 days. Most recently, 三力测试 was updated on September 9, 2026 and 专业指南针 on September 22, 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.*