# EngineCalc vs Hydraulic Pressure Calculator

The clearest difference is review sentiment: EngineCalc at 67% against Hydraulic Pressure Calculator's 0%. EngineCalc also leads on price ($0.99 vs $2.99) and ratings volume (4 vs 1). Hydraulic Pressure Calculator's advantage is rating (5.0 vs 3.0) and device support (3 vs 1). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

EngineCalc costs $0.99 and Hydraulic Pressure Calculator $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Hydraulic Pressure Calculator holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews complicate that: 67% of EngineCalc's written reviews are positive against 0% of Hydraulic Pressure Calculator's, so the app with the better star average is not the one people write more warmly about.

EngineCalc ships an update every 22 months, Hydraulic Pressure Calculator every 27 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | EngineCalc | Hydraulic Pressure Calculator |
| --- | --- | --- |
| Price | **$0.99** | $2.99 |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/enginecalc/id378824382/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hydraulic-pressure-calculator/id1420373327/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | **66.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 22 months** | Every 27 months |
| Monetization | Paid | Paid |
| Size | 13 MB | 1 MB |
| Requires iOS | 26.0 | **13** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [iTrinity, Inc.](https://appshunter.io/developer/547108075) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### EngineCalc

[App page](https://appshunter.io/ios/app/enginecalc/id378824382)

This utility app provides a collection of essential formulas and calculators for powersports and engine tuning. It allows users to perform complex calculations directly on their iPhone, eliminating the need for a laptop or desktop computer.

**Highlights:** Powersports formulas, Engine tuning calculators, Actual Volume Flow, Air Density, Compression Ratio, Cylinder Displacement, Volumetric Efficiency

**Features:** macOS Compatibility, Vision Pro 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 EngineCalc free?

EngineCalc costs $0.99, 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, EngineCalc or Hydraulic Pressure Calculator?

Hydraulic Pressure Calculator is rated higher. EngineCalc averages 3.0 out of 5 from 4 ratings, while Hydraulic Pressure Calculator averages 5.0 from 1 ratings.

### Do EngineCalc or Hydraulic Pressure Calculator have ads?

Neither EngineCalc nor Hydraulic Pressure Calculator shows ads.

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

EngineCalc ships an update every 22 months, and Hydraulic Pressure Calculator every 27 months. Most recently, EngineCalc was updated on October 23, 2026 and Hydraulic Pressure Calculator 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.*