# EMS PRO ONE vs hydrogen cup

EMS PRO ONE and hydrogen cup are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

EMS PRO ONE ships an update every 3 months, hydrogen cup every 2 months. The most recent releases landed on September 17, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | EMS PRO ONE | hydrogen cup |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 24 MB | 30 MB |
| Requires iOS | **12** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Markus Trocha](https://appshunter.io/developer/1770456913) | [Shenzhen ZhiBaoyuan Electronic Technology Co., Ltd.](https://appshunter.io/developer/1034201313) |

## What reviewers say

### EMS PRO ONE

[App page](https://appshunter.io/ios/app/ems-pro-one/id6717588985)

**In-app purchases:** none


### hydrogen cup

[App page](https://appshunter.io/ios/app/hydrogen-cup/id6760735452)

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

**In-app purchases:** none


## Frequently asked questions

### Is EMS PRO ONE free?

EMS PRO ONE is free to download, with no in-app purchases.

### Is hydrogen cup free?

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

### Do EMS PRO ONE or hydrogen cup have ads?

Neither EMS PRO ONE nor hydrogen cup shows ads.

### Which is updated more often, EMS PRO ONE or hydrogen cup?

EMS PRO ONE ships an update every 3 months, and hydrogen cup every 2 months. Most recently, EMS PRO ONE was updated on September 17, 2026 and hydrogen cup on September 19, 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.*