Comparison

3D Interpolation 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

3D Interpolation

Calculate key directional drilling parameters like TVD, coordinates, and displacement. This tool aids drilling engineers and students in oil well directional drilling by interpolating survey data.

Highlights
  • Calculate TVD, N/S, E/W coordinates
  • Determine Horizontal Displacement
  • Calculate Dog-Leg Severity
  • Measure Build-Up Rate
  • Calculate Turn Rate
  • Interpolate parameters between survey stations
Features
Read full description

The 3D Interpolation provides an useful tool to calculate projections TVD (True Vertical Depth), N/S and E/W coordinates, Horizontal Displacement, Dog-Leg Severity, Build-Up Rate (Angle Rate, Intensity) and Turn Rate and also the Interpolation of these parameters between two well planning sections or survey stations defined by Measured Depth, Inclination and Azimuth as entry parameters in the directional drilling of oil wells. Calculations Method: Minimum Curvature Length Units: Foot and Meter (Metre) Intensity Units: degree/100ft, degree/10m, degree/30m and degree/100m Our goal was to create a low-cost application with the help of experts to share with drilling engineers, technicians, drillers, students and teachers of drilling engineering. You can contribute with suggestions for improvements, correcting the translation to english, reporting bugs and sharing it with your friends. Thanks DISCLAIMER: These tools & materials are provided 'as is' without warranties of any kind, express or implied. Please verify the tools provided by this application by yourself before you use them. Ensure you understand the impact of using these tools. Any use you choose to make of these tools & materials is undertaken by you entirely at you own risk.

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

3D Interpolation4 screens
Fluid Mechanics Calc4 screens

Verdict

The call

The clearest difference is price: Fluid Mechanics Calc at Free against 3D Interpolation's $9.99. 3D Interpolation's advantage is iOS requirement (12.0 vs 15.6). On update cadence, 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

Fluid Mechanics Calc is free to download; 3D Interpolation costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

3D Interpolation ships an update every 37 months, Fluid Mechanics Calc every 22 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

Scorecard3 real differences · 7 level
3D Interpolation versus Fluid Mechanics Calc: the parameters behind the verdict, then further details
Parameter3D InterpolationFluid Mechanics Calc
Price$9.99Free — better
Rating—5.0 (3 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings—3 — better
Update frequencyEvery 37 monthsEvery 22 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.6
Further details — not scored
Size7 MB108 MB
Age rating4+4+
DeveloperCarlos MouraTrelleborg Sealing Solutions

Customer experience

3D Interpolation

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Fluid Mechanics Calc

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

In-app purchases

None

3D Interpolation

No in-app purchases

None

Fluid Mechanics Calc

No in-app purchases

Questions

Is 3D Interpolation free?
3D Interpolation costs $9.99, with no in-app purchases.
Is Fluid Mechanics Calc free?
Fluid Mechanics Calc is free to download, with no in-app purchases.
Do 3D Interpolation or Fluid Mechanics Calc have ads?
Neither 3D Interpolation nor Fluid Mechanics Calc shows ads.
Which is updated more often, 3D Interpolation or Fluid Mechanics Calc?
3D Interpolation ships an update every 37 months, and Fluid Mechanics Calc every 22 months. Most recently, 3D Interpolation was updated on November 1, 2026 and Fluid Mechanics Calc on November 2, 2026.

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