Comparison

Hydraulic System Calculator vs Thread Calculator

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

Head to head
About

Hydraulic System Calculator

Calculate key parameters for hydraulic cylinders, pumps, motors, and pipes. Design individual components, view formulas, and switch between metric and imperial units for precise engineering.

Highlights
  • Calculate cylinder, pump, and motor parameters
  • Design single/double-acting cylinders
  • View and switch units (Metric/Imperial)
  • Calculate piping parameters
  • Dynamic result updates
  • Copy and share results
Features
Read full description

The Hydraulic System Calculator is an intuitive tool for people working with hydraulic cylinders, pumps, motors and pipes. This app enables design of individual hydraulic components around single-acting or double-acting cylinders. A user can look into the formulas involved and switch to their preferred units. Features at a glance: - By entering the requisite dimensions of the cylinder and parameters like the pressure and oil flow the user would be able to calculate the areas & volumes in the cylinder, extraction & retraction forces, velocity, time, outflow and ratio. The output is derived on both the piston and rod side of the cylinder - A backward compatibility is also provided on some of the parameters (force, time & velocity) in the cylinder area to provide users with the extension of using the calculator in more user friendly environment - The app enables the calculation of flow rate, pressure, displacement, speed, torque and power in Motor section - The app enables the calculation of displacement, flow rate, electric motor power and total efficiency in Pump section - The app can be used to calculate pressure drop around an orifice - Piping parameters like velocity, cross-sectional area and reynolds number can be calculated using absolute or kinematic viscosity - The calculations can be carried out in both Metric or Imperial units - The data provided is in conformation with ISO 3320, ISO 3321 and ISO 4393 in the cylinder section - The calculator is built to dynamically update the results as the user keys in the values - The input and output values could be displayed in preferred sub-units as per the requirements of the user after the calculation is carried out. It also helps the user to make specific changes in units before the calculations - Interactive images on cylinder section provides the user with a good understanding of the component - The results can be copied to clipboard and can be shared via e-mail

About

Thread Calculator

This app provides a quick and easy way to calculate thread dimensions for various units, including tap hole sizes and bolt specifications. It helps metalworkers find precise measurements for internal and external threads without consulting tables.

Highlights
  • Thread cutting calculator for multiple units
  • Cold forming calculator
  • Thread repair calculator
  • Tap hole and bolt diameter calculation
  • Saves time compared to tables
Features
Read full description

The app includes: - A calculator for thread cutting for the following units: M, MF, UNC, UNEF, UNF, UNR, UNS, NPT, NPTF, NPSC, NPSF, NPSL, NPSM, BA, BSP, BSF, BSW, BSPP, TR, and TRF - A calculator for cold forming - A calculator for thread repair You want to know which tap hole you should drill for threading or which bolt you should use? With this app, you will find the desired measures in no time: Simply select the desired thread type, nominal size, and pitch and you will get the matching diameter for your project. This saves precious time you would have spent tediously searching for internal and external thread dimensions in tables. As this app is still in its development phase, new features will follow soon, so stay tuned! GSR Gustav Stursberg GmbH is a manufacturer for high-quality thread cutting tools with 130 years of operational experience in the area of threading tool production. The product portfolio includes a wide selection of tools for different areas of application. GSR taps, twist drills, round dies, and tool holders are manufactured to the highest quality standards in our own production facilities. The constant quality control during the production process guarantees a consistent good quality in all national as well as international production facilities. This requires enormous precision, which is reflected by our tools. Precision is in the details. Since 1889.

Screenshots

Hydraulic System Calculator4 screens
Thread Calculator4 screens

Verdict

The call

The clearest difference is ads: Hydraulic System Calculator at none against Thread Calculator's shown. Hydraulic System Calculator also leads on update cadence (every 7 months vs every 18 months) and monetization model (free vs ad-supported). Thread Calculator's advantage is review sentiment (33% vs 0%) and rating (4.3 vs 4.0). On price, in-app purchases, device support and iOS requirement 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

Thread Calculator holds the better App Store score, 4.3 against 4.0. Both are backed by a comparable volume of ratings — 3 and 13 respectively. Written reviews point the same way: 0% of Hydraulic System Calculator's written reviews are positive against 33% of Thread Calculator's.

UpkeepUpdate frequency

Hydraulic System Calculator ships an update every 7 months, Thread Calculator every 18 months. The most recent releases landed on September 24, 2026 and September 9, 2026 respectively.

Scorecard6 real differences · 4 level
Hydraulic System Calculator versus Thread Calculator: the parameters behind the verdict, then further details
ParameterHydraulic System CalculatorThread Calculator
PriceFreeFree
Rating4.0 (3 ratings)4.3 (13 ratings) — better
Positive reviews0.0% of reviews33.3% of reviews — better
Number of ratings313 — better
Update frequencyEvery 7 months — betterEvery 18 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.0
Further details — not scored
Size94 MB25 MB
Age rating4+4+
DeveloperTrelleborg Sealing SolutionsGSR Gustav Stursberg GmbH

Customer experience

Hydraulic System Calculator

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Thread Calculator

All ratings13 ratings
Positive84.6%
Neutral7.7%
Negative7.7%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

None

Hydraulic System Calculator

No in-app purchases

None

Thread Calculator

No in-app purchases

Questions

Is Hydraulic System Calculator free?
Hydraulic System Calculator is free to download, with no in-app purchases.
Is Thread Calculator free?
Thread Calculator is free to download, with no in-app purchases.
Which has better reviews, Hydraulic System Calculator or Thread Calculator?
Thread Calculator is rated higher. Hydraulic System Calculator averages 4.0 out of 5 from 3 ratings, while Thread Calculator averages 4.3 from 13 ratings.
Do Hydraulic System Calculator or Thread Calculator have ads?
Thread Calculator shows ads; Hydraulic System Calculator does not.
Which is updated more often, Hydraulic System Calculator or Thread Calculator?
Hydraulic System Calculator ships an update every 7 months, and Thread Calculator every 18 months. Most recently, Hydraulic System Calculator was updated on September 24, 2026 and Thread Calculator on September 9, 2026.

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