# EchoAccess vs Hydrostatic Pressure Calc

The clearest difference is rating: Hydrostatic Pressure Calc at 5.0 against EchoAccess's 3.5. Hydrostatic Pressure Calc also leads on iOS requirement (13 vs 17.0). EchoAccess's advantage is update cadence (every 4 months vs every 31 months) and chart position (#92 vs unranked). On price, ads, in-app purchases and monetization model there is nothing between them.

EchoAccess costs $2.99 and Hydrostatic Pressure Calc $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Hydrostatic Pressure Calc holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: EchoAccess has 8 ratings behind it against 1, so its average is the more settled of the two.

EchoAccess ships an update every 4 months, Hydrostatic Pressure Calc every 31 months. The most recent releases landed on November 13, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | EchoAccess | Hydrostatic Pressure Calc |
| --- | --- | --- |
| Price | $2.99 | $2.99 |
| Rating | [3.5 (8 ratings)](https://appshunter.io/ios/app/echoaccess/id1003870103/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hydrostatic-pressure-calc/id1420384357/reviews)** |
| Number of ratings | **8** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 31 months |
| Monetization | Paid | Paid |
| Best chart rank | **#92** | — |
| Size | 69 MB | 1 MB |
| Requires iOS | 17.0 | **13** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Electronic Theatre Controls, Inc.](https://appshunter.io/developer/318210459) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### EchoAccess

[App page](https://appshunter.io/ios/app/echoaccess/id1003870103)

**Currently charting:** #92 Top Paid · Utilities (US App Store)

Control and configure ETC Unison Echo lighting systems remotely from your iOS device. Adjust lighting levels, manage zones, and save presets. Secure your system with multiple passwords.

**Highlights:** Remote lighting control, Zone and space management, Preset recording and activation, System configuration, Multiple password security

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

**In-app purchases:** none


### Hydrostatic Pressure Calc

[App page](https://appshunter.io/ios/app/hydrostatic-pressure-calc/id1420384357)

Quickly calculate hydrostatic pressure at any depth with this physics tool. It offers instant results, supports various units, and displays the relevant formulas for reference. Optimized for ease of use and accuracy.

**Highlights:** Instant hydrostatic pressure calculation, Supports multiple input units, Includes hydrostatic pressure formulas, Results are copyable, High precision up to 16 decimal places, Lightweight and optimized

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

**In-app purchases:** none


## Frequently asked questions

### Is EchoAccess free?

EchoAccess costs $2.99, with no in-app purchases.

### Is Hydrostatic Pressure Calc free?

Hydrostatic Pressure Calc costs $2.99, with no in-app purchases.

### Which has better reviews, EchoAccess or Hydrostatic Pressure Calc?

Hydrostatic Pressure Calc is rated higher. EchoAccess averages 3.5 out of 5 from 8 ratings, while Hydrostatic Pressure Calc averages 5.0 from 1 ratings.

### Do EchoAccess or Hydrostatic Pressure Calc have ads?

Neither EchoAccess nor Hydrostatic Pressure Calc shows ads.

### Which is updated more often, EchoAccess or Hydrostatic Pressure Calc?

EchoAccess ships an update every 4 months, and Hydrostatic Pressure Calc every 31 months. Most recently, EchoAccess was updated on November 13, 2026 and Hydrostatic Pressure Calc on November 2, 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.*