# 新知卫星地图 vs Tide Pro

The clearest difference is rating: Tide Pro at 5.0 against 新知卫星地图's 4.6. 新知卫星地图's advantage is update cadence (every 2 weeks vs every 2 months) and review sentiment (56% vs 38%). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. 新知卫星地图 sells 19 in-app purchases, starting at $3.49 per month and Tide Pro sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Tide Pro holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: 新知卫星地图 has 74 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 56% of 新知卫星地图's written reviews are positive against 38% of Tide Pro's, so the app with the better star average is not the one people write more warmly about.

新知卫星地图 ships an update every 2 weeks, Tide Pro every 2 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 新知卫星地图 | Tide Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (74 ratings)](https://appshunter.io/ios/app/id1526845210/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/tide-pro/id1528292517/reviews)** |
| Number of ratings | **74** | 3 |
| Positive reviews | **56.3% of reviews** | 37.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 283 MB | 121 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chongqing Xinzhi Space Technology Co., Ltd.](https://appshunter.io/developer/1514572019) | [娜 金](https://appshunter.io/developer/1523130771) |

## What reviewers say

### 新知卫星地图

[App page](https://appshunter.io/ios/app/id1526845210)

This app offers advanced mapping and planning tools with features like 3D panoramic views, point-line-area calculations, and altitude queries. It allows users to share locations and routes, and includes built-in navigation. Visualize geographical and demographic data for various industries.

**Highlights:** 3D panoramic map views, Point, line, and area calculations, Altitude queries and track recording, Visualization of demographic data, Location and route sharing, Built-in navigation

**Features:** macOS Compatibility

**In-app purchases (19)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 新知卫星地图月卡订阅 | $3.49 | per month |
| 新知卫星地图月卡会员 | $3.99 | per month |
| 新知地图月卡订阅 | $5.99 | per month |
| 新知卫星地图月会员 | $5.99 | per month |
| 新知卫星地图月卡VIP订阅 | $5.99 | per month |
| 新知卫星地图月会员 | $7.99 | per month |
| 新知卫星地图年会员 | $19.99 | per year |
| 新知卫星地图年卡试用 | $26.49 | per year |
| 新知卫星地图月卡会员 | $3.99 | one-time |
| 新知地图季卡会员 | $9.99 | one-time |
| 4个月新知卫星地图SVIP | $11.99 | one-time |
| 新知卫星地图终身会员升级 | $17.99 | one-time |
| 升级为新知卫星地图终身会员 | $17.99 | one-time |
| 半年新知卫星地图会员 | $19.99 | one-time |
| 新知卫星地图年卡会员 | $24.99 | one-time |
| 1年新知卫星地图会员 | $24.99 | one-time |
| 终身新知卫星地图会员 | $29.99 | one-time |
| 新知卫星地图终身会员 | $39.99 | one-time |
| 终身新知卫星地图会员 | $39.99 | one-time |


### Tide Pro

[App page](https://appshunter.io/ios/app/tide-pro/id1528292517)

This app provides high-precision forecasts for ocean weather, including astronomical tides, storm surges, and merged ocean currents. It offers detailed data on wave conditions, ocean currents at various depths, and marine bio-chemistry. Users can also access seabed elevation and field water/soil temperatures.

**Highlights:** Astronomical tide and currents forecast, 6-Day storm surge forecast, Merged ocean-currents approach, Ocean wave forecast, Ocean currents forecast, Ocean bio-chemistry forecast, Seabed elevation data

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month VIP | $14.99 | one-time |
| 1 Year VIP | $49.99 | one-time |


## Frequently asked questions

### Is 新知卫星地图 free?

新知卫星地图 is free to download, with in-app purchases available.

### Is Tide Pro free?

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

### Which has better reviews, 新知卫星地图 or Tide Pro?

Tide Pro is rated higher. 新知卫星地图 averages 4.6 out of 5 from 74 ratings, while Tide Pro averages 5.0 from 3 ratings.

### Do 新知卫星地图 or Tide Pro have ads?

Both 新知卫星地图 and Tide Pro show ads.

### Which is updated more often, 新知卫星地图 or Tide Pro?

新知卫星地图 ships an update every 2 weeks, and Tide Pro every 2 months. Most recently, 新知卫星地图 was updated on October 25, 2026 and Tide Pro on October 24, 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.*