# 地图测量专家 vs Earth

The clearest difference is rating: 地图测量专家 at 5.0 against Earth's 4.5. Earth's advantage is ads (none vs shown) and review sentiment (48% vs 17%). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. 地图测量专家 sells 2 in-app purchases, starting at $0.99 per month and Earth sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

地图测量专家 holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Earth has 326 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 17% of 地图测量专家's written reviews are positive against 48% of Earth's, so the app with the better star average is not the one people write more warmly about.

地图测量专家 ships an update every 3 weeks, Earth fortnightly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 地图测量专家 | Earth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id1372641338/reviews)** | [4.5 (326 ratings)](https://appshunter.io/ios/app/earth/id1552347616/reviews) |
| Number of ratings | 1 | **326** |
| Positive reviews | 16.7% of reviews | **48.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 10 MB | 185 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [振其 黎](https://appshunter.io/developer/1372641337) | [Beidou Hanglu Technology Co.,Ltd.](https://appshunter.io/developer/1549454215) |

## What reviewers say

### 地图测量专家

[App page](https://appshunter.io/ios/app/id1372641338)

This tool helps you measure route lengths, land areas, and distances on a map directly from your phone. It offers precise location services, map searching, and the ability to save and share your measurements. Customize map types and units for your needs.

**Highlights:** Route length calculation, Polygon land area calculation, Multi-point distance calculation, Precise GPS positioning, Map location search, Save and share measurements, Unit conversion

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 专业版服务1个月 | $0.99 | per month |
| 专业版服务1年 | $3.99 | per year |


### Earth

[App page](https://appshunter.io/ios/app/earth/id1552347616)

Explore a detailed 3D globe with satellite imagery and road navigation. Quickly locate points of interest by coordinates and view Earth's nightscape. Offers fast performance and extensive historical data for global exploration.

**Highlights:** 3D globe visualization, Satellite and road layers, Coordinate-based search, Night mode viewing, Satellite navigation with compass, Extensive historical imagery data

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Earth Annual Membership | $7.99 | one-time |
| Permanent member of Earth | $16.99 | one-time |


## Frequently asked questions

### Is 地图测量专家 free?

地图测量专家 is free to download, with in-app purchases available.

### Is Earth free?

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

### Which has better reviews, 地图测量专家 or Earth?

地图测量专家 is rated higher. 地图测量专家 averages 5.0 out of 5 from 1 ratings, while Earth averages 4.5 from 326 ratings.

### Do 地图测量专家 or Earth have ads?

地图测量专家 shows ads; Earth does not.

### Which is updated more often, 地图测量专家 or Earth?

地图测量专家 ships an update every 3 weeks, and Earth fortnightly. Most recently, 地图测量专家 was updated on November 2, 2026 and Earth on November 3, 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.*