# Udan HESS vs MetaEss

The clearest difference is iOS requirement: Udan HESS at 13.0 against MetaEss's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Udan HESS ships an update every 3 months, MetaEss every 2 months. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Udan HESS | MetaEss |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 33 MB | 144 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Anhui Udan Technology Co., Ltd.](https://appshunter.io/developer/1593792520) | [涛 孙](https://appshunter.io/developer/1698361092) |

## What reviewers say

### Udan HESS

[App page](https://appshunter.io/ios/app/udan-hess/id6443758347)

**Features:** macOS Compatibility

**In-app purchases:** none


### MetaEss

[App page](https://appshunter.io/ios/app/metaess/id6443809950)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Udan HESS free?

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

### Is MetaEss free?

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

### Do Udan HESS or MetaEss have ads?

Neither Udan HESS nor MetaEss shows ads.

### Which is updated more often, Udan HESS or MetaEss?

Udan HESS ships an update every 3 months, and MetaEss every 2 months. Most recently, Udan HESS was updated on October 13, 2026 and MetaEss on October 14, 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.*