# ThaiWater  รู้น้ำ รู้อากาศ vs Drying Day

The clearest difference is in-app purchases: ThaiWater  รู้น้ำ รู้อากาศ at none against Drying Day's 1. ThaiWater  รู้น้ำ รู้อากาศ also leads on ads (none vs shown) and update cadence (weekly vs fortnightly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Drying Day sells 1 one-off in-app purchase. ThaiWater  รู้น้ำ รู้อากาศ asks for nothing beyond the download.

ThaiWater  รู้น้ำ รู้อากาศ ships an update weekly, Drying Day fortnightly. The most recent releases landed on October 13, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | ThaiWater  รู้น้ำ รู้อากาศ | Drying Day |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/thaiwater/id1097487200/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Free | — |
| Size | 83 MB | 26 MB |
| Requires iOS | 15.4 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hydro Informatics Institute](https://appshunter.io/developer/1741701510) | [I OSTAPENKO & Y OSTAPENKO](https://appshunter.io/developer/6799116433) |

## What reviewers say

### ThaiWater  รู้น้ำ รู้อากาศ

[App page](https://appshunter.io/ios/app/thaiwater/id1097487200)

Access national water data to track water situations. This application is developed by the Hydro Informatics Institute under the Ministry of Higher Education, Science, Research and Innovation.

**Highlights:** Track water situations, Access national water data, Information from national water database, Developed by Hydro Informatics Institute

**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 (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is ThaiWater  รู้น้ำ รู้อากาศ free?

ThaiWater  รู้น้ำ รู้อากาศ 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 ThaiWater  รู้น้ำ รู้อากาศ or Drying Day have ads?

Drying Day shows ads; ThaiWater  รู้น้ำ รู้อากาศ does not.

### Which is updated more often, ThaiWater  รู้น้ำ รู้อากาศ or Drying Day?

ThaiWater  รู้น้ำ รู้อากาศ ships an update weekly, and Drying Day fortnightly. Most recently, ThaiWater  รู้น้ำ รู้อากาศ was updated on October 13, 2026 and Drying Day on October 12, 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.*