# dBMeter Pro vs Hydraulic Pressure Calculator

dBMeter Pro and Hydraulic Pressure Calculator both sit at 5.0 stars, but that hides the real split: 57% of dBMeter Pro's written reviews are positive against 0% of Hydraulic Pressure Calculator's. dBMeter Pro also leads on update cadence (every 5 months vs every 27 months). Hydraulic Pressure Calculator's advantage is price ($2.99 vs $5.99) and device support (3 vs 1). On rating, ratings volume, ads and in-app purchases there is nothing between them.

dBMeter Pro costs $5.99 and Hydraulic Pressure Calculator $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for dBMeter Pro against 5.0 for Hydraulic Pressure Calculator. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews are what separate them: 57% of dBMeter Pro's written reviews are positive against 0% of Hydraulic Pressure Calculator's.

dBMeter Pro ships an update every 5 months, Hydraulic Pressure Calculator every 27 months. The most recent releases landed on October 31, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | dBMeter Pro | Hydraulic Pressure Calculator |
| --- | --- | --- |
| Price | $5.99 | **$2.99** |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/dbmeter-pro/id296264086/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/hydraulic-pressure-calculator/id1420373327/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | **56.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 27 months |
| Monetization | Paid | Paid |
| Size | 6 MB | 1 MB |
| Requires iOS | 17.6 | **13** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Matthias Schorer](https://appshunter.io/developer/290579382) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### dBMeter Pro

[App page](https://appshunter.io/ios/app/dbmeter-pro/id296264086)

This application transforms your iPhone into a sound level meter for analyzing ambient noise or testing audio equipment. It offers dual-input measurement, a contextual reference guide, and long-term data logging up to 12 hours. Data can be exported for further analysis.

**Highlights:** Dual-input measurement, Contextual reference guide, Long-term data logging, CSV data export, External microphone support

**In-app purchases:** none


### Hydraulic Pressure Calculator

[App page](https://appshunter.io/ios/app/hydraulic-pressure-calculator/id1420373327)

This physics and math calculator determines the force generated by a piston-cylinder based on pneumatic or hydraulic pressure and bore diameter. It provides instant calculations with copyable results and includes reference formulas. Supports various units and high decimal precision.

**Highlights:** Instant calculation, Copyable results, Included formulas, Supports 16 decimal places, Multiple unit support, Lightweight and optimized

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

**In-app purchases:** none


## Frequently asked questions

### Is dBMeter Pro free?

dBMeter Pro costs $5.99, with no in-app purchases.

### Is Hydraulic Pressure Calculator free?

Hydraulic Pressure Calculator costs $2.99, with no in-app purchases.

### Which has better reviews, dBMeter Pro or Hydraulic Pressure Calculator?

dBMeter Pro and Hydraulic Pressure Calculator are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do dBMeter Pro or Hydraulic Pressure Calculator have ads?

Neither dBMeter Pro nor Hydraulic Pressure Calculator shows ads.

### Which is updated more often, dBMeter Pro or Hydraulic Pressure Calculator?

dBMeter Pro ships an update every 5 months, and Hydraulic Pressure Calculator every 27 months. Most recently, dBMeter Pro was updated on October 31, 2026 and Hydraulic Pressure Calculator 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.*