# MyObservatory vs Rainy HK

The clearest difference is update cadence: Rainy HK at every 2 weeks against MyObservatory's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

MyObservatory ships an update monthly, Rainy HK every 2 weeks. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | MyObservatory | Rainy HK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (32 ratings)](https://appshunter.io/ios/app/myobservatory/id361319719/reviews)** | — |
| Number of ratings | **32** | — |
| Positive reviews | 39.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 253 MB | 31 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hong Kong Observatory](https://appshunter.io/developer/355216376) | [Ka Kit Lee](https://appshunter.io/developer/1885749629) |

## What reviewers say

### MyObservatory

[App page](https://appshunter.io/ios/app/myobservatory/id361319719)

Access real-time weather data, including temperature, humidity, and wind conditions. View weather photos from nearby stations and receive timely updates on rainfall. Get alerts for weather warnings and special tips.

**Highlights:** Current weather conditions, Weather photos from stations, Rainfall data updates, Weather warning notifications, Location-based rain forecast, Customizable location settings

**Features:** Apple Wallet, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Rainy HK

[App page](https://appshunter.io/ios/app/rainy-hk/id6760688701)

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

**In-app purchases:** none


## Frequently asked questions

### Is MyObservatory free?

MyObservatory is free to download, with no in-app purchases.

### Is Rainy HK free?

Rainy HK is free to download, with no in-app purchases.

### Do MyObservatory or Rainy HK have ads?

Neither MyObservatory nor Rainy HK shows ads.

### Which is updated more often, MyObservatory or Rainy HK?

MyObservatory ships an update monthly, and Rainy HK every 2 weeks. Most recently, MyObservatory was updated on November 1, 2026 and Rainy HK on October 31, 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.*