# 潮汐表 Pro vs Surf Forecast

The clearest difference is update cadence: Surf Forecast at every 2 weeks against 潮汐表 Pro's every 7 months. 潮汐表 Pro's advantage is iOS requirement (15.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 潮汐表 Pro sells 2 in-app purchases, starting at $1.99 per month and Surf Forecast sells 4 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

潮汐表 Pro ships an update every 7 months, Surf Forecast every 2 weeks. The most recent releases landed on October 16, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 潮汐表 Pro | Surf Forecast |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Size | 56 MB | 87 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ming tung chen](https://appshunter.io/developer/1885509669) | [Leveling LP](https://appshunter.io/developer/1647363900) |

## What reviewers say

### 潮汐表 Pro

[App page](https://appshunter.io/ios/app/pro/id6761328495)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 專業版 (Pro) - 月費 | $1.99 | per month |
| 專業版 (Pro) - 年費 | $17.99 | per year |


### Surf Forecast

[App page](https://appshunter.io/ios/app/surf-forecast-curlio/id6766071847)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Curlio Pro - 1 Week | $6.99 | per 7 days |
| Curlio Pro PROMO | $29.99 | per year |
| Curlio Pro - 1 Year | $44.99 | per year |
| Curlio Pro - Forever | $179.00 | one-time |


## Frequently asked questions

### Is 潮汐表 Pro free?

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

### Is Surf Forecast free?

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

### Do 潮汐表 Pro or Surf Forecast have ads?

Neither 潮汐表 Pro nor Surf Forecast shows ads.

### Which is updated more often, 潮汐表 Pro or Surf Forecast?

潮汐表 Pro ships an update every 7 months, and Surf Forecast every 2 weeks. Most recently, 潮汐表 Pro was updated on October 16, 2026 and Surf Forecast 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.*