# Pf Fidelity vs Hydor App

Pf Fidelity and Hydor App 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.

Pf Fidelity ships an update every 5 months, Hydor App every 3 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Pf Fidelity | Hydor App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.4 (52 ratings)](https://appshunter.io/ios/app/hydor-app/id1577972620/reviews)** |
| Number of ratings | — | **52** |
| Positive reviews | — | 10.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 93 MB | 45 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Connecta Srls](https://appshunter.io/developer/1073890583) | [Ferplast S.p.a.](https://appshunter.io/developer/1577972622) |

## What reviewers say

### Pf Fidelity

[App page](https://appshunter.io/ios/app/pf-fidelity/id1434839440)

**Features:** macOS Compatibility

**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 Pf Fidelity free?

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

### Is Hydor App free?

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

### Do Pf Fidelity or Hydor App have ads?

Neither Pf Fidelity nor Hydor App shows ads.

### Which is updated more often, Pf Fidelity or Hydor App?

Pf Fidelity ships an update every 5 months, and Hydor App every 3 months. Most recently, Pf Fidelity was updated on October 26, 2026 and Hydor App on October 24, 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.*