# H2O Audio PRO vs CircuitSense

The clearest difference is review sentiment: CircuitSense at 100% against H2O Audio PRO's 16%. CircuitSense also leads on rating (5.0 vs 1.8) and update cadence (every 3 days vs every 3 months). H2O Audio PRO's advantage is in-app purchases (none vs 2) and ratings volume (27 vs 2). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CircuitSense sells 2 in-app purchases, starting at $9.99 per month. H2O Audio PRO asks for nothing beyond the download.

CircuitSense holds the better App Store score, 5.0 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. Written reviews point the same way: 16% of H2O Audio PRO's written reviews are positive against 100% of CircuitSense's.

H2O Audio PRO ships an update every 3 months, CircuitSense every 3 days. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | H2O Audio PRO | CircuitSense |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.8 (27 ratings)](https://appshunter.io/ios/app/h2o-audio-pro/id1641826502/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/circuitsense/id6755273867/reviews)** |
| Number of ratings | **27** | 2 |
| Positive reviews | 15.8% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 9 MB | 37 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [H2O Audio](https://appshunter.io/developer/1461691451) | [CircuitSense LLC](https://appshunter.io/developer/1850351250) |

## What reviewers say

### 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


### CircuitSense

[App page](https://appshunter.io/ios/app/circuitsense/id6755273867)

This app automates complex electrical calculations for electricians, including conduit sizing, conductor ampacity, and voltage drop, based on the 2026 NEC. It provides detailed explanations for each result and organizes calculations by project for easy access and professional output sharing.

**Highlights:** Automated conduit and conductor sizing, Voltage drop and derating calculations, Box fill and pull box sizing, Load calculations for various building types, Fault current and transformer sizing, Conduit bending and panel phasing tools, Offline functionality

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CircuitSense Pro | $9.99 | per month |
| CircuitSense Pro | $79.99 | per year |


## Frequently asked questions

### Is H2O Audio PRO free?

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

### Is CircuitSense free?

CircuitSense is free to download, with in-app purchases available.

### Which has better reviews, H2O Audio PRO or CircuitSense?

CircuitSense is rated higher. H2O Audio PRO averages 1.8 out of 5 from 27 ratings, while CircuitSense averages 5.0 from 2 ratings.

### Do H2O Audio PRO or CircuitSense have ads?

Neither H2O Audio PRO nor CircuitSense shows ads.

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

H2O Audio PRO ships an update every 3 months, and CircuitSense every 3 days. Most recently, H2O Audio PRO was updated on October 22, 2026 and CircuitSense 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.*