Comparison

Fluid Mechanics Calc vs VALK Tools

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

Head to head
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!

About

VALK Tools

Features
Read full description

VALK Tools is a modern, user-friendly platform designed to make discovering and shopping for tools easier than ever. Whether you're a professional craftsman, technician, or DIY enthusiast, the app gives you access to a wide variety of high-quality tools and equipment all in one place. Explore organized categories such as power tools, bench tools, and welding machines, making it simple to find exactly what you need. Stay up to date with the latest arrivals through the Recently Added Products section, or browse Top Products to see the most popular and trusted tools chosen by other users. With a fast search experience, clean interface, and smart navigation, VALK Tools helps you quickly compare products, check details, and make confident purchasing decisions. The app is built to save your time and effort—so you can focus on getting the job done with the right tools. Whether you're working on a professional project or a home improvement task, VALK Tools is your reliable companion for finding the right tool, every time.

Screenshots

Fluid Mechanics Calc4 screens
VALK Tools3 screens

Verdict

The call

The clearest difference is update cadence: VALK Tools at every 2 weeks against Fluid Mechanics Calc's every 22 months. VALK Tools also leads on iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support 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.

UpkeepUpdate frequency

Fluid Mechanics Calc ships an update every 22 months, VALK Tools every 2 weeks. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 7 level
Fluid Mechanics Calc versus VALK Tools: the parameters behind the verdict, then further details
ParameterFluid Mechanics CalcVALK Tools
PriceFreeFree
Rating5.0 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyEvery 22 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size108 MB85 MB
Age rating4+12+
DeveloperTrelleborg Sealing SolutionsITRoots

In-app purchases

None

Fluid Mechanics Calc

No in-app purchases

None

VALK Tools

No in-app purchases

Questions

Is Fluid Mechanics Calc free?
Fluid Mechanics Calc is free to download, with no in-app purchases.
Is VALK Tools free?
VALK Tools is free to download, with no in-app purchases.
Do Fluid Mechanics Calc or VALK Tools have ads?
Neither Fluid Mechanics Calc nor VALK Tools shows ads.
Which is updated more often, Fluid Mechanics Calc or VALK Tools?
Fluid Mechanics Calc ships an update every 22 months, and VALK Tools every 2 weeks. Most recently, Fluid Mechanics Calc was updated on November 2, 2026 and VALK Tools on October 30, 2026.

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