# Predictive Forecasting vs 潮汐表专业版

The clearest difference is ads: 潮汐表专业版 at none against Predictive Forecasting's shown. 潮汐表专业版 also leads on update cadence (every 9 days vs every 115 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Predictive Forecasting sells 1 one-off in-app purchase and 潮汐表专业版 sells 1 in-app purchase, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Predictive Forecasting ships an update every 115 months, 潮汐表专业版 every 9 days. The most recent releases landed on October 9, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Predictive Forecasting | 潮汐表专业版 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 115 months | **Every 9 days** |
| Size | 7 MB | 55 MB |
| Requires iOS | 16.6 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ramalingam Sivaramakrishnan](https://appshunter.io/developer/892706271) | [博 胡](https://appshunter.io/developer/6780505914) |

## What reviewers say

### Predictive Forecasting

[App page](https://appshunter.io/ios/app/predictive-forecasting-speed/id1129858835)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### 潮汐表专业版

[App page](https://appshunter.io/ios/app/id6803528662)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度订阅 | $4.99 | per month |


## Frequently asked questions

### Is Predictive Forecasting free?

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

### Is 潮汐表专业版 free?

潮汐表专业版 is free to download, with in-app purchases available.

### Do Predictive Forecasting or 潮汐表专业版 have ads?

Predictive Forecasting shows ads; 潮汐表专业版 does not.

### Which is updated more often, Predictive Forecasting or 潮汐表专业版?

Predictive Forecasting ships an update every 115 months, and 潮汐表专业版 every 9 days. Most recently, Predictive Forecasting was updated on October 9, 2026 and 潮汐表专业版 on October 16, 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.*