# AutoTech vs Hydraulic Calculator Engineer

The clearest difference is review sentiment: AutoTech at 100% against Hydraulic Calculator Engineer's 0%. Hydraulic Calculator Engineer's advantage is price (Free vs $1.99). On update cadence, ads, in-app purchases and device support there is nothing between them.

Hydraulic Calculator Engineer is free to download; AutoTech costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AutoTech ships an update every 32 months, Hydraulic Calculator Engineer every 22 months. Both last shipped on September 10, 2026.

## The numbers

| Metric | AutoTech | Hydraulic Calculator Engineer |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.3 (9 ratings)](https://appshunter.io/ios/app/hydraulic-calculator-engineer/id1664790770/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 22 months** |
| Monetization | Paid | **Free** |
| Size | 2 MB | 21 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Steven Clarner](https://appshunter.io/developer/410979939) | [Arsosa Network Inc.](https://appshunter.io/developer/1209042440) |

## What reviewers say

### AutoTech

[App page](https://appshunter.io/ios/app/autotech/id410979934)

This automotive calculator provides quick computations for over 45 formulas across various vehicle systems. It supports both U.S. and metric units, making it a versatile tool for mechanics, technicians, and enthusiasts.

**Highlights:** 45+ automotive formulas, Aerodynamics calculations, Chassis calculations, Drivetrain calculations, Engine calculations, Performance calculations, Suspension calculations, Tire calculations

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

**In-app purchases:** none


### Hydraulic Calculator Engineer

[App page](https://appshunter.io/ios/app/hydraulic-calculator-engineer/id1664790770)

This app offers a suite of hydraulic calculations for technicians and engineers. It simplifies complex hydraulics by automatically computing results based on user-entered values, eliminating the need for manual formula application.

**Highlights:** Cylinder Calculation, Power Calculation, Pressure Difference, Piston Diameter, Speed Calculation, Lifting Time, Volume Flow

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

**In-app purchases:** none


## Frequently asked questions

### Is AutoTech free?

AutoTech costs $1.99, with no in-app purchases.

### Is Hydraulic Calculator Engineer free?

Hydraulic Calculator Engineer is free to download, with no in-app purchases.

### Do AutoTech or Hydraulic Calculator Engineer have ads?

Neither AutoTech nor Hydraulic Calculator Engineer shows ads.

### Which is updated more often, AutoTech or Hydraulic Calculator Engineer?

AutoTech ships an update every 32 months, and Hydraulic Calculator Engineer every 22 months. Most recently, AutoTech was updated on September 10, 2026 and Hydraulic Calculator Engineer on September 10, 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.*