# 知雨天气 vs Drying Day

The clearest difference is in-app purchases: 知雨天气 at none against Drying Day's 6. 知雨天气 also leads on ads (none vs shown). Drying Day's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price and update cadence there is nothing between them.

Both are free to download. Drying Day sells 3 one-off in-app purchases. 知雨天气 asks for nothing beyond the download.

知雨天气 ships an update every 5 weeks, Drying Day every 3 weeks. The most recent releases landed on October 31, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | 知雨天气 | Drying Day |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Size | 3 MB | 27 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [春辉 邵](https://appshunter.io/developer/1896641285) | [I OSTAPENKO & Y OSTAPENKO](https://appshunter.io/developer/6799116433) |

## What reviewers say

### 知雨天气

[App page](https://appshunter.io/ios/app/id6785187177)

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

**In-app purchases:** none


### Drying Day

[App page](https://appshunter.io/ios/app/drying-day/id6802211157)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small thank-you | $0.49 | one-time |
| Thank-you | $1.99 | one-time |
| Big thank-you | $2.99 | one-time |


## Frequently asked questions

### Is 知雨天气 free?

知雨天气 is free to download, with no in-app purchases.

### Is Drying Day free?

Drying Day is free to download, with in-app purchases available.

### Do 知雨天气 or Drying Day have ads?

Drying Day shows ads; 知雨天气 does not.

### Which is updated more often, 知雨天气 or Drying Day?

知雨天气 ships an update every 5 weeks, and Drying Day every 3 weeks. Most recently, 知雨天气 was updated on October 31, 2026 and Drying Day on November 4, 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.*