# eWater.mn vs Duudlaga Flow

The clearest difference is in-app purchases: eWater.mn at none against Duudlaga Flow's 1. eWater.mn also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Duudlaga Flow sells 1 in-app purchase, starting at $9.99 per month. eWater.mn asks for nothing beyond the download.

eWater.mn ships an update fortnightly, Duudlaga Flow every 9 days. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | eWater.mn | Duudlaga Flow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Size | 28 MB | 37 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Astvision LLC](https://appshunter.io/developer/859727778) | [Tsagaanbayar Mendbayar](https://appshunter.io/developer/1781187399) |

## What reviewers say

### eWater.mn

[App page](https://appshunter.io/ios/app/ewatermn/id6738036291)

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

**In-app purchases:** none


### Duudlaga Flow

[App page](https://appshunter.io/ios/app/duudlaga-flow/id6761625672)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $9.99 | per month |


## Frequently asked questions

### Is eWater.mn free?

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

### Is Duudlaga Flow free?

Duudlaga Flow is free to download, with in-app purchases available.

### Do eWater.mn or Duudlaga Flow have ads?

Neither eWater.mn nor Duudlaga Flow shows ads.

### Which is updated more often, eWater.mn or Duudlaga Flow?

eWater.mn ships an update fortnightly, and Duudlaga Flow every 9 days. Most recently, eWater.mn was updated on October 30, 2026 and Duudlaga Flow on November 5, 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.*