# Udan HESS vs HEMS (2.0)

The clearest difference is iOS requirement: Udan HESS at 13.0 against HEMS (2.0)'s 16.4. 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.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 13, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Udan HESS | HEMS (2.0) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Size | 33 MB | 81 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Anhui Udan Technology Co., Ltd.](https://appshunter.io/developer/1593792520) | [Advant](https://appshunter.io/developer/1558663663) |

## What reviewers say

### Udan HESS

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

**Features:** macOS Compatibility

**In-app purchases:** none


### HEMS (2.0)

[App page](https://appshunter.io/ios/app/hems-20/id6751934572)

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

**In-app purchases:** none


## Frequently asked questions

### Is Udan HESS free?

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

### Is HEMS (2.0) free?

HEMS (2.0) is free to download, with no in-app purchases.

### Do Udan HESS or HEMS (2.0) have ads?

Neither Udan HESS nor HEMS (2.0) shows ads.

### Which is updated more often, Udan HESS or HEMS (2.0)?

Udan HESS ships an update every 3 months, and HEMS (2.0) every 3 months. Most recently, Udan HESS was updated on October 13, 2026 and HEMS (2.0) on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*