# 专业指南针 vs 123掌上电子证件

The clearest difference is in-app purchases: 123掌上电子证件 at none against 专业指南针's 4. On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. 专业指南针 sells 4 in-app purchases, starting at $6.99 per 7 days. 123掌上电子证件 asks for nothing beyond the download.

专业指南针 ships an update every 4 days, 123掌上电子证件 weekly. The most recent releases landed on October 16, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 专业指南针 | 123掌上电子证件 |
| --- | --- | --- |
| 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 | 14.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Weekly |
| Monetization | Freemium | **Free** |
| Size | 43 MB | 65 MB |
| Requires iOS | 15 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hutui tech](https://appshunter.io/developer/1814030829) | [思富 江](https://appshunter.io/developer/1883705997) |

## What reviewers say

### 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 |


### 123掌上电子证件

[App page](https://appshunter.io/ios/app/123/id6761905065)

Organize your important documents on your phone. Store information, photos, and categorize them by type or scenario. Receive reminders for renewals and securely back up your data.

**Highlights:** Store document information, Save photos or import from album, Categorize by type, Create scenario packs, Renewal reminders, Export and share documents, Local device storage

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

**In-app purchases:** none


## Frequently asked questions

### Is 专业指南针 free?

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

### Is 123掌上电子证件 free?

123掌上电子证件 is free to download, with no in-app purchases.

### Do 专业指南针 or 123掌上电子证件 have ads?

Neither 专业指南针 nor 123掌上电子证件 shows ads.

### Which is updated more often, 专业指南针 or 123掌上电子证件?

专业指南针 ships an update every 4 days, and 123掌上电子证件 weekly. Most recently, 专业指南针 was updated on October 16, 2026 and 123掌上电子证件 on October 8, 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.*