# Weather forecast! vs SmartAir PM 2.5

The clearest difference is in-app purchases: SmartAir PM 2.5 at none against Weather forecast!'s 1. SmartAir PM 2.5 also leads on update cadence (monthly vs every 6 months) and iOS requirement (6.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Weather forecast! sells 1 one-off in-app purchase. SmartAir PM 2.5 asks for nothing beyond the download.

Weather forecast! ships an update every 6 months, SmartAir PM 2.5 monthly. Both last shipped on November 1, 2026.

## The numbers

| Metric | Weather forecast! | SmartAir PM 2.5 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (34 ratings)](https://appshunter.io/ios/app/weather-forecast/id795721175/reviews)** | — |
| Number of ratings | **34** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Monetization | Free | — |
| Size | 6 MB | 6 MB |
| Requires iOS | 15.0 | **6.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [庆猛 邓](https://appshunter.io/developer/620435580) | [Thermo Fisher Scientific](https://appshunter.io/developer/407517076) |

## What reviewers say

### Weather forecast!

[App page](https://appshunter.io/ios/app/weather-forecast/id795721175)

Get accurate, real-time weather data for over 800,000 locations worldwide. Track hourly temperatures, view 7-day and 15-day forecasts, and receive activity suggestions based on weather conditions. Enjoy a beautiful, easy-to-use interface.

**Highlights:** Global weather data for 800,000+ cities, Automatic location detection, Hourly temperature tracking, 7-day and 15-day forecasts, Activity suggestions, Clean and modern interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Time Limit | $3.99 | one-time |


### SmartAir PM 2.5

[App page](https://appshunter.io/ios/app/smartair-pm-25/id924495447)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Weather forecast! free?

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

### Is SmartAir PM 2.5 free?

SmartAir PM 2.5 is free to download, with no in-app purchases.

### Do Weather forecast! or SmartAir PM 2.5 have ads?

Neither Weather forecast! nor SmartAir PM 2.5 shows ads.

### Which is updated more often, Weather forecast! or SmartAir PM 2.5?

Weather forecast! ships an update every 6 months, and SmartAir PM 2.5 monthly. Most recently, Weather forecast! was updated on November 1, 2026 and SmartAir PM 2.5 on November 1, 2026.

---

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