Comparison

Hydraulic Calculator Engineer vs Atlas Operations

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

Head to head
About

Hydraulic Calculator Engineer

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
Read full description

Hydraulic Engineer Calculators is a practical hydraulic engineering calculator and formula app for engineers, technicians, students, contractors, operators, and anyone working with fluid flow, pipes, pumps, pressure, open channels, hydraulic cylinders, or fluid mechanics. Quickly enter your values, select units, calculate an estimate, review result details, and check the formula used. Hydraulic calculators included: Flow & Pipe Calculators - Pipe Flow Velocity - Calculate fluid velocity from flow rate and pipe diameter - Flow Rate - Calculate volumetric flow from flow area and average velocity - Required Pipe Diameter - Estimate pipe diameter from design flow and velocity - Reynolds Number - Calculate Reynolds number for internal fluid flow Head Loss Calculators - Darcy-Weisbach Head Loss - Estimate pipe friction head loss - Hazen-Williams Head Loss - Estimate water pipe friction loss - Minor Loss - Calculate losses from fittings, valves, entrances, exits, and components Pressure & Head Calculators - Pressure to Head - Convert pressure to hydraulic head - Head to Pressure - Convert hydraulic head to pressure - Hydrostatic Pressure - Calculate pressure caused by fluid depth - Bernoulli Total Head - Calculate total hydraulic head Pump Calculators - Pump Power - Estimate hydraulic pump power from flow, head, and efficiency - Pump Head from Pressure - Calculate pump head from pressure difference - NPSH Available - Estimate Net Positive Suction Head Available Open Channel Flow Calculators - Manning Rectangular Channel - Estimate rectangular channel flow - Froude Number - Calculate the Froude number - Critical Depth - Estimate critical water depth - Orifice Flow - Calculate fluid discharge through an orifice Hydraulic System Calculators - Water Hammer Pressure - Estimate pressure rise from a rapid velocity change - Hydraulic Cylinder Force - Calculate cylinder force from pressure and piston area - Hydraulic Cylinder Speed - Calculate piston speed from flow rate and bore diameter Fluid Properties Calculator - Specific Gravity - Calculate specific gravity from fluid density Useful for: - Hydraulic engineering - Fluid mechanics - Pipe flow and pipe sizing - Water flow and pressure - Head loss and pipe friction - Pump systems and pump power - NPSH calculations - Open channel flow - Hydraulic cylinders - Water hammer - Irrigation, plumbing, water, and wastewater systems - Civil and mechanical engineering Supported units include: - m, mm, cm, ft, in - m², cm², mm², ft², in² - m³/s, m³/h, L/s, L/min, US gpm, ft³/s - Pa, kPa, MPa, bar, psi - m/s, ft/s - W, kW, hp Built-in formula guide Each calculator includes its formula, and the app links to a Hydraulic Engineer Guide with additional information about formulas, variables, units, calculation steps, practical uses, and important considerations. Selected calculators also include dynamic diagrams to help visualize values used in pipe, pressure, head, open channel, tank, and hydraulic cylinder calculations. Simple workflow: - Choose a calculator - Enter your known values - Select units - Tap Calculate - Review the result and details - Check the formula - Open the related guide for more information The built-in search makes it easy to find a specific hydraulic calculator by category or name. Important disclaimer These calculators provide preliminary hydraulic estimates only. Results are not a substitute for professional engineering judgment, certified calculations, manufacturer specifications, site-specific analysis, or applicable codes and standards. Always verify input values, units, fluid properties, pipe specifications, equipment limitations, safety factors, operating conditions, site conditions, and governing requirements before using a calculation for design, procurement, installation, testing, operation, maintenance, or any safety-critical application.

About

Atlas Operations

This mobile application helps yacht charter companies manage their fleet operations efficiently. It offers a comprehensive, user-friendly interface for operational staff to maintain full visibility and control over their charter business from any location.

Highlights
  • Streamline yacht charter operations
  • Comprehensive fleet management
  • Mobile-friendly interface
  • Full visibility and control
  • Manage charter business from anywhere
Features
Read full description

Streamline Your Yacht Charter Operations Atlas Operations provides a comprehensive, mobile-friendly solution for yacht charter companies to manage their entire fleet operations. With an intuitive interface designed specifically for operational staff, maintain complete visibility and control of all aspects of your charter business from anywhere.

Screenshots

Hydraulic Calculator Engineer4 screens
Atlas Operations4 screens

Verdict

The call

The clearest difference is review sentiment: Atlas Operations at 100% against Hydraulic Calculator Engineer's 0%. Atlas Operations also leads on rating (5.0 vs 4.3) and update cadence (fortnightly vs every 22 months). Hydraulic Calculator Engineer's advantage is ratings volume (9 vs 1). On price, ads, in-app purchases and monetization model 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Atlas Operations holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Hydraulic Calculator Engineer has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Hydraulic Calculator Engineer's written reviews are positive against 100% of Atlas Operations's.

UpkeepUpdate frequency

Hydraulic Calculator Engineer ships an update every 22 months, Atlas Operations fortnightly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 6 level
Hydraulic Calculator Engineer versus Atlas Operations: the parameters behind the verdict, then further details
ParameterHydraulic Calculator EngineerAtlas Operations
PriceFreeFree
Rating4.3 (9 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings9 — better1
Update frequencyEvery 22 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.4
Further details — not scored
Size21 MB118 MB
Age rating4+4+
DeveloperArsosa Network Inc.HeyAtlas.ai LLC

Customer experience

Hydraulic Calculator Engineer

All ratings9 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Atlas Operations

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Hydraulic Calculator Engineer

No in-app purchases

None

Atlas Operations

No in-app purchases

Questions

Is Hydraulic Calculator Engineer free?
Hydraulic Calculator Engineer is free to download, with no in-app purchases.
Is Atlas Operations free?
Atlas Operations is free to download, with no in-app purchases.
Which has better reviews, Hydraulic Calculator Engineer or Atlas Operations?
Atlas Operations is rated higher. Hydraulic Calculator Engineer averages 4.3 out of 5 from 9 ratings, while Atlas Operations averages 5.0 from 1 ratings.
Do Hydraulic Calculator Engineer or Atlas Operations have ads?
Neither Hydraulic Calculator Engineer nor Atlas Operations shows ads.
Which is updated more often, Hydraulic Calculator Engineer or Atlas Operations?
Hydraulic Calculator Engineer ships an update every 22 months, and Atlas Operations fortnightly. Most recently, Hydraulic Calculator Engineer was updated on November 3, 2026 and Atlas Operations on November 5, 2026.

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