Comparison

dBMeter Pro vs Hydraulic Pressure Calculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

dBMeter Pro

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
Read full description

Transform your iPhone into a powerful sound level meter with dBMeter Pro. Whether you are analyzing ambient noise, testing audio equipment, or simply curious about your environment, dBMeter Pro delivers accurate decibel readings with an intuitive interface. Key Capabilities: - Dual-Input Measurement: Seamlessly switch between the iPhone’s built-in microphone for quick checks or connect external measuring microphones for enhanced precision. - Contextual Reference Guide: Don’t just read numbers—understand them. Our visual reference view compares current noise levels to real-world examples (like a library, traffic, or a rock concert) for instant context. - Long-Term Data Logging: Need to monitor noise over time? Record up to 12 hours of continuous samples. - Data Export: Easily export your sessions as CSV files for deep-dive analytics and archiving. Important Note: While dBMeter Pro has been calibrated using professional-grade equipment to ensure high accuracy, it is intended for personal and educational use only. It should not be used as a substitute for certified industrial equipment for professional or legal measurements. The author assumes no liability for damages arising from the use of this software.

About

Hydraulic Pressure Calculator

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
Read full description

Hydraulic Pressure Calculator is a physics/math calculator designed to find the force generated by a piston-cylinder for a specified pneumatic/hydraulic pressure and piston-cylinder bore diameter. Features: - Instant calculation. - Results are copyable to other apps. - Formulas are included as references. - Supports up to 16 decimal places. - Supports various units for each input. - Lightweight app with a small size, optimized for everyday use. The basic principle of the hydraulic press is based on Pascal's law. Pascal's law is a principle in fluid mechanics that states a pressure change occurring anywhere in a confined, incompressible fluid is transmitted throughout the fluid, causing the same change everywhere. Pascal's principle is used in many hydraulic systems, such as hydraulic presses. The Hydraulic Pressure Calculator computes suitable parameters for both pistons in the hydraulic press. Pascal's Law Formula: F₁ = A₁ / A₂ * F₂ p = F₁ / A₁ where: F₁ - Force applied to the first piston. F₂ - Force applied to the second piston. A₁ - Area of the first piston. A₂ - Area of the second piston. p - Pressure of the liquid inside the hydraulic press. Thanks for your support, and please do visit nitrio.com for more apps for your iOS devices.

Screenshots

dBMeter Pro4 screens
Hydraulic Pressure Calculator4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
dBMeter Pro versus Hydraulic Pressure Calculator: the parameters behind the verdict, then further details
ParameterdBMeter ProHydraulic Pressure Calculator
Price$5.99$2.99 — better
Rating5.0 (2 ratings)5.0 (1 ratings)
Positive reviews56.7% of reviews — better0.0% of reviews
Number of ratings2 — better1
Update frequencyEvery 5 months — betterEvery 27 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.613 — better
Further details — not scored
Size6 MB1 MB
Age rating4+4+
DeveloperMatthias SchorerNitrio

Customer experience

dBMeter Pro

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews60 reviews
Positive56.7%
Neutral16.7%
Negative26.7%

Hydraulic Pressure Calculator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

dBMeter Pro

No in-app purchases

None

Hydraulic Pressure Calculator

No in-app purchases

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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