Comparison

StrucMaster HD vs Fluid Mechanics Calc

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

Head to head
About

StrucMaster HD

This app allows users to define and analyze structural mechanics problems on their iPad. It offers powerful functions for internal force diagrams, dynamics, influence lines, and stability analysis, with detailed solving steps provided by AI. Users can create complex structures with non-integer element lengths.

Highlights
  • Define custom structures
  • Internal force diagram analysis
  • Dynamics and stability analysis
  • Influence line calculations
  • AI-powered detailed solving steps
  • MultiSelect command for complex structures
  • Offline analysis
Read full description

【Introduction】 You will enjoy the procedure of defining your own structure with only several steps and have it analyzed by this StrucMaster HD. Powerful functions inside can deal with internal force diagram, dynamics, influence line and stability analysis. The Intelligence part can provide detailed solving steps. The MultiSelect command can help you establish the large structure just as in CAD, it can also help designers define structures with non-integer length elements. All of the procedures are done by the artificial intelligence in your iPad, no matter whether you are connected to the Internet. Convenient, powerful, no delays, what are you waiting for? Actually, you can download another app, named StrucMaster, if you want to analyze the structure on your iPhone. But the iPad version is more elegant, which takes us most of efforts. If you have any question, you can contact us by our e-mail address structuremaster@163.com or tell us in Facebook. Our Facebook website: https://www.facebook.com/StrucMaster

About

Fluid Mechanics Calc

This utility app provides a comprehensive calculator for fluid mechanics, civil, and structural engineering parameters. It offers over 130 formulas and 360 calculation methods, supporting seamless unit system switching for analysis, design, and operation of fluid-related systems.

Highlights
  • 130+ fluid mechanics formulas
  • 360+ calculation methods
  • Unit system conversion (metric/US)
  • Favorite formula marking
  • High mathematical precision
  • Seamless unit switching
Features
Read full description

The app is useful for the fluid thinkers. This app covers a wide variety of topics and helps in analysis, design, maintenance and operation of fluid related systems. The calculator will provide results for different fluid mechanics, civil, structural, pipe flow and engineering parameters. It is useful in the fields of automotive, aviation, geology, space, biological applications, petroleum, marine systems and cylinder manufacturing. This app comes handy to students, engineers, analysts, researchers and the curious. Here are the useful features of this app LISTS 130+ FORMULAE Memorizing hundreds of formula is not the way to go when it comes to learning fluid mechanics 360+ METHODS OF CALCULATION This calculator allows a user to change subject of formula based on the variable he/she wants to calculate. The formula applied is displayed in the app CALCULATE FOR ANSWERS Key in the numbers, set units and see results. Switch upto three conversion units. The app accepts input and provides results to the highest mathematical precision MARK FAVORITES Easy markups for easy recall HOP SEAMLESSLY BETWEEN BETWEEN METRIC AND US (INCH) UNIT SYSTEMS The app maintains separate functioning of these unit systems. The app has a predefined library of units designated to each of them It would be a good idea to kill the app and re-open it once in a while with the internet. We constantly strive to update, increase and enrich the content of the app. Go fluid with this app in your pocket!

Screenshots

Fluid Mechanics Calc4 screens

Verdict

The call

The clearest difference is rating: Fluid Mechanics Calc at 5.0 against StrucMaster HD's 2.3. Fluid Mechanics Calc also leads on in-app purchases (none vs 1) and device support (3 vs 1). StrucMaster HD's advantage is update cadence (every 6 months vs every 22 months) and iOS requirement (8.0 vs 15.6). On price, ratings volume, ads 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. StrucMaster HD sells 1 one-off in-app purchase. Fluid Mechanics Calc asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Fluid Mechanics Calc holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 3 and 3 respectively.

UpkeepUpdate frequency

StrucMaster HD ships an update every 6 months, Fluid Mechanics Calc every 22 months. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

Scorecard5 real differences · 5 level
StrucMaster HD versus Fluid Mechanics Calc: the parameters behind the verdict, then further details
ParameterStrucMaster HDFluid Mechanics Calc
PriceFreeFree
Rating2.3 (3 ratings)5.0 (3 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings33
Update frequencyEvery 6 months — betterEvery 22 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPadiPhone, iPad, iPod — better
Requires iOS8.0 — better15.6
Further details — not scored
Size86 MB108 MB
Age rating4+4+
Developer颖达 陈Trelleborg Sealing Solutions

Customer experience

StrucMaster HD

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Fluid Mechanics Calc

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

StrucMaster HD

One-time1
  • Advanced Function Forever$3.99
None

Fluid Mechanics Calc

No in-app purchases

Questions

Is StrucMaster HD free?
StrucMaster HD is free to download, with in-app purchases available.
Is Fluid Mechanics Calc free?
Fluid Mechanics Calc is free to download, with no in-app purchases.
Which has better reviews, StrucMaster HD or Fluid Mechanics Calc?
Fluid Mechanics Calc is rated higher. StrucMaster HD averages 2.3 out of 5 from 3 ratings, while Fluid Mechanics Calc averages 5.0 from 3 ratings.
Do StrucMaster HD or Fluid Mechanics Calc have ads?
Neither StrucMaster HD nor Fluid Mechanics Calc shows ads.
Which is updated more often, StrucMaster HD or Fluid Mechanics Calc?
StrucMaster HD ships an update every 6 months, and Fluid Mechanics Calc every 22 months. Most recently, StrucMaster HD was updated on October 24, 2026 and Fluid Mechanics Calc on October 12, 2026.

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