# Geca Watch by Hydrostasis vs ECHO Water

The clearest difference is rating: Geca Watch by Hydrostasis at 5.0 against ECHO Water's 4.6. Geca Watch by Hydrostasis also leads on iOS requirement (13.0 vs 15.1). ECHO Water's advantage is ratings volume (143 vs 3). 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.

Geca Watch by Hydrostasis holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: ECHO Water has 143 ratings behind it against 3, so its average is the more settled of the two.

Geca Watch by Hydrostasis ships an update every 5 weeks, ECHO Water every 3 weeks. Both last shipped on November 4, 2026.

## The numbers

| Metric | Geca Watch by Hydrostasis | ECHO Water |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/geca-watch-by-hydrostasis/id6476198463/reviews)** | [4.6 (143 ratings)](https://appshunter.io/ios/app/echo-water/id6739596759/reviews) |
| Number of ratings | 3 | **143** |
| Positive reviews | — | 20.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 62 MB | 49 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hydrostasis Inc.](https://appshunter.io/developer/1466028949) | [Echo Water](https://appshunter.io/developer/1786253277) |

## What reviewers say

### Geca Watch by Hydrostasis

[App page](https://appshunter.io/ios/app/geca-watch-by-hydrostasis/id6476198463)

This app helps you monitor your hydration levels using a connected device that measures skin hydration. It provides real-time updates, personalized recommendations for water intake, and tracks your daily and weekly hydration trends to promote better health and wellness.

**Highlights:** Skin hydration measurement, Real-time updates, Personalized water intake recommendations, Daily and weekly hydration trend tracking, Habit building for optimal hydration

**Features:** macOS Compatibility

**In-app purchases:** none


### ECHO Water

[App page](https://appshunter.io/ios/app/echo-water/id6739596759)

This app provides a streamlined and dependable interface for operating your Echo Flask. It offers a simplified user experience for managing hydrogen water generation.

**Highlights:** Simplified operation, Reliable performance, Echo Flask management, Hydrogen water generation

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Sleek and compact design
- 💡 Customizable color options

**What reviewers complain about**

- 🐛 Connectivity issues with app
- 🐛 Inaccurate water tracking
- 🐛 Firmware update problems
- 🔋 Unreliable battery life

**Reported bugs**

- App unable to sync with water bottle
- Inconsistent flask counting
- Bluetooth pairing problems

**Requested features**

- Ability to manually log water intake
- Scheduling options for hydrogen water
- Improved app performance and stability


## Frequently asked questions

### Is Geca Watch by Hydrostasis free?

Geca Watch by Hydrostasis is free to download, with no in-app purchases.

### Is ECHO Water free?

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

### Which has better reviews, Geca Watch by Hydrostasis or ECHO Water?

Geca Watch by Hydrostasis is rated higher. Geca Watch by Hydrostasis averages 5.0 out of 5 from 3 ratings, while ECHO Water averages 4.6 from 143 ratings.

### Do Geca Watch by Hydrostasis or ECHO Water have ads?

Neither Geca Watch by Hydrostasis nor ECHO Water shows ads.

### Which is updated more often, Geca Watch by Hydrostasis or ECHO Water?

Geca Watch by Hydrostasis ships an update every 5 weeks, and ECHO Water every 3 weeks. Most recently, Geca Watch by Hydrostasis was updated on November 4, 2026 and ECHO Water on November 4, 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.*