# Predictive Forecasting vs 江西空气质量

The clearest difference is in-app purchases: 江西空气质量 at none against Predictive Forecasting's 1. 江西空气质量 also leads on ads (none vs shown) and update cadence (every 5 weeks vs every 115 months). On price and device support there is nothing between them.

Both are free to download. Predictive Forecasting sells 1 one-off in-app purchase. 江西空气质量 asks for nothing beyond the download.

Predictive Forecasting ships an update every 115 months, 江西空气质量 every 5 weeks. The most recent releases landed on October 9, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Predictive Forecasting | 江西空气质量 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 115 months | **Every 5 weeks** |
| Size | 7 MB | 47 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Ramalingam Sivaramakrishnan](https://appshunter.io/developer/892706271) | [广东旭诚科技有限公司](https://appshunter.io/developer/1048882371) |

## 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 |


### 江西空气质量

[App page](https://appshunter.io/ios/app/id1251322940)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Predictive Forecasting free?

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

### Is 江西空气质量 free?

江西空气质量 is free to download, with no in-app purchases.

### Do Predictive Forecasting or 江西空气质量 have ads?

Predictive Forecasting shows ads; 江西空气质量 does not.

### Which is updated more often, Predictive Forecasting or 江西空气质量?

Predictive Forecasting ships an update every 115 months, and 江西空气质量 every 5 weeks. Most recently, Predictive Forecasting was updated on October 9, 2026 and 江西空气质量 on October 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*