# ARAMIS App vs Hydor App

The clearest difference is rating: ARAMIS App at 5.0 against Hydor App's 1.4. Hydor App's advantage is update cadence (every 3 months vs every 17 months) and ratings volume (51 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

ARAMIS App holds the better App Store score, 5.0 against 1.4. That said, the two scores are not equally well evidenced: Hydor App has 51 ratings behind it against 1, so its average is the more settled of the two.

ARAMIS App ships an update every 17 months, Hydor App every 3 months. The most recent releases landed on September 11, 2026 and June 9, 2026 respectively.

## The numbers

| Metric | ARAMIS App | Hydor App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/aramis-app/id1521918211/reviews)** | [1.4 (51 ratings)](https://appshunter.io/ios/app/hydor-app/id1577972620/reviews) |
| Number of ratings | 1 | **51** |
| Positive reviews | — | 10.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 21 MB | 45 MB |
| Requires iOS | 13.4 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Carl Zeiss GOM Metrology GmbH](https://appshunter.io/developer/1521918213) | [Ferplast S.p.a.](https://appshunter.io/developer/1577972622) |

## What reviewers say

### ARAMIS App

[App page](https://appshunter.io/ios/app/aramis-app/id1521918211)

This utility app assists users in planning and executing precise motion and deformation analyses with a ZEISS ARAMIS system. It calculates necessary sensor settings, including distances, and provides essential data for optimal setup. Users can also view compatible reference points and touch probes.

**Highlights:** Plan measuring tasks, Reliable task execution, Compute sensor settings, Optimize system setup, View reference points, View touch probes

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

**In-app purchases:** none


### Hydor App

[App page](https://appshunter.io/ios/app/hydor-app/id1577972620)

Remotely manage and configure your aquarium devices from anywhere. Set daily programs, create personalized device sets, and receive status notifications to keep your aquarium running smoothly.

**Highlights:** Remote Wi-Fi device management, Configure daily programs, Create personalized device sets, Real-time status notifications, Manage multiple devices

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ARAMIS App free?

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

### Is Hydor App free?

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

### Which has better reviews, ARAMIS App or Hydor App?

ARAMIS App is rated higher. ARAMIS App averages 5.0 out of 5 from 1 ratings, while Hydor App averages 1.4 from 51 ratings.

### Do ARAMIS App or Hydor App have ads?

Neither ARAMIS App nor Hydor App shows ads.

### Which is updated more often, ARAMIS App or Hydor App?

ARAMIS App ships an update every 17 months, and Hydor App every 3 months. Most recently, ARAMIS App was updated on September 11, 2026 and Hydor App on June 9, 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.*