# Dolphin Connect vs H2O Audio PRO

The clearest difference is rating: Dolphin Connect at 3.0 against H2O Audio PRO's 1.8. H2O Audio PRO's advantage is ratings volume (27 vs 2) and update cadence (every 3 months vs every 5 months). 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.

Dolphin Connect holds the better App Store score, 3.0 against 1.8. That said, the two scores are not equally well evidenced: H2O Audio PRO has 27 ratings behind it against 2, so its average is the more settled of the two.

Dolphin Connect ships an update every 5 months, H2O Audio PRO every 3 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Dolphin Connect | H2O Audio PRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/dolphin-connect/id1498496399/reviews)** | [1.8 (27 ratings)](https://appshunter.io/ios/app/h2o-audio-pro/id1641826502/reviews) |
| Number of ratings | 2 | **27** |
| Positive reviews | — | 15.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 77 MB | 9 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CATS POWER DESIGN](https://appshunter.io/developer/1525909556) | [H2O Audio](https://appshunter.io/developer/1461691451) |

## What reviewers say

### Dolphin Connect

[App page](https://appshunter.io/ios/app/dolphin-connect/id1498496399)

Monitor your marine battery charger's performance and receive alerts in real-time from your smartphone or tablet. Track key metrics like charging phase, battery type, voltage, and temperature. The app provides permanent diagnosis with 8 different alerts to ensure your charger and batteries are functioning optimally.

**Highlights:** Live performance monitoring, 10 key performance metrics, Permanent diagnosis with 8 alerts, Supports PROLITE chargers and ALL-in-ONE Gen IV, Multilingual support (5 languages), Real-time dashboard

**Features:** macOS Compatibility

**In-app purchases:** none


### H2O Audio PRO

[App page](https://appshunter.io/ios/app/h2o-audio-pro/id1641826502)

This utility app allows users to manage their H2O Audio devices. It provides functionality for updating device software and organizing music playlists.

**Highlights:** Manage H2O Audio Devices, Update device software, Manage PLAYLIST+ audio

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

**In-app purchases:** none


## Frequently asked questions

### Is Dolphin Connect free?

Dolphin Connect is free to download, with no in-app purchases.

### Is H2O Audio PRO free?

H2O Audio PRO is free to download, with no in-app purchases.

### Which has better reviews, Dolphin Connect or H2O Audio PRO?

Dolphin Connect is rated higher. Dolphin Connect averages 3.0 out of 5 from 2 ratings, while H2O Audio PRO averages 1.8 from 27 ratings.

### Do Dolphin Connect or H2O Audio PRO have ads?

Neither Dolphin Connect nor H2O Audio PRO shows ads.

### Which is updated more often, Dolphin Connect or H2O Audio PRO?

Dolphin Connect ships an update every 5 months, and H2O Audio PRO every 3 months. Most recently, Dolphin Connect was updated on November 3, 2026 and H2O Audio PRO on November 3, 2026.

---

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