# Yi Weather vs Sun Event

The clearest difference is in-app purchases: Sun Event at none against Yi Weather's 3. Yi Weather's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Yi Weather sells 3 one-off in-app purchases. Sun Event asks for nothing beyond the download.

Yi Weather ships an update every 3 weeks, Sun Event every 2 weeks. Both last shipped on October 7, 2026.

## The numbers

| Metric | Yi Weather | Sun Event |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Size | 17 MB | 36 MB |
| Requires iOS | 17.0 | **16.7.10** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [春晖 王](https://appshunter.io/developer/972349380) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### Yi Weather

[App page](https://appshunter.io/ios/app/yi-weather/id1661648748)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Me a Coffee (Small) | $0.99 | one-time |
| Buy Me a Coffee (Medium) | $2.99 | one-time |
| Buy Me a Coffee (Large) | $4.99 | one-time |


### Sun Event

[App page](https://appshunter.io/ios/app/sun-event/id6503113277)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Yi Weather free?

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

### Is Sun Event free?

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

### Do Yi Weather or Sun Event have ads?

Sun Event shows ads; Yi Weather does not.

### Which is updated more often, Yi Weather or Sun Event?

Yi Weather ships an update every 3 weeks, and Sun Event every 2 weeks. Most recently, Yi Weather was updated on October 7, 2026 and Sun Event on October 7, 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.*