# Predictive Forecasting vs Hydrogen Weather

The clearest difference is update cadence: Hydrogen Weather at every 3 days against Predictive Forecasting's every 115 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Predictive Forecasting sells 1 one-off in-app purchase and Hydrogen Weather sells 3 in-app purchases, starting at $0.39 per 7 days. Whichever you choose, the download price is not the number that matters.

Predictive Forecasting ships an update every 115 months, Hydrogen Weather every 3 days. The most recent releases landed on October 9, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Predictive Forecasting | Hydrogen Weather |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 115 months | **Every 3 days** |
| Size | 7 MB | 30 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Ramalingam Sivaramakrishnan](https://appshunter.io/developer/892706271) | [旭东 王](https://appshunter.io/developer/6777856693) |

## 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 |


### Hydrogen Weather

[App page](https://appshunter.io/ios/app/hydrogen-weather/id6792465691)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $0.39 | per 7 days |
| Monthly | $0.99 | per month |
| Yearly | $9.99 | per year |


## Frequently asked questions

### Is Predictive Forecasting free?

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

### Is Hydrogen Weather free?

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

### Do Predictive Forecasting or Hydrogen Weather have ads?

Both Predictive Forecasting and Hydrogen Weather show ads.

### Which is updated more often, Predictive Forecasting or Hydrogen Weather?

Predictive Forecasting ships an update every 115 months, and Hydrogen Weather every 3 days. Most recently, Predictive Forecasting was updated on October 9, 2026 and Hydrogen Weather on October 15, 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.*