3D Interpolation vs ECD Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
Read full descriptionHide 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.
ECD Calculator
This utility app assists drilling and mud engineers in calculating Equivalent Circulating Density (ECD) at any point during operations. It offers a streamlined process with just a few clicks.
- ECD calculation
- Drilling engineering
- Mud engineering
- Point-of-operation calculation
- Streamlined interface
Read full descriptionHide full description
ECD calculator help drilling and mud engineers calculate the ECD at any point with a few click
Screenshots
Verdict
The clearest difference is review sentiment: ECD Calculator at 100% against 3D Interpolation's 0%. ECD Calculator also leads on price (Free vs $9.99) and update cadence (every 5 days vs every 37 months). 3D Interpolation's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 15.1). On ads 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
ECD Calculator is free to download; 3D Interpolation costs $9.99 up front. ECD Calculator sells 2 one-off in-app purchases. 3D Interpolation asks for nothing beyond the download.
3D Interpolation ships an update every 37 months, ECD Calculator every 5 days. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.
| Parameter | 3D Interpolation | ECD Calculator |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | — | 5.0 (5 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | — | 5 — better |
| Update frequency | Every 37 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 7 MB | 45 MB |
| Age rating | 4+ | 17+ |
| Developer | Carlos Moura | Drillsoft LLC |
Customer experience
3D Interpolation
ECD Calculator
In-app purchases
3D Interpolation
No in-app purchases
ECD Calculator
- 50 credits$3.99
- 300 Credits$9.99
Questions
Is 3D Interpolation free?
Is ECD Calculator free?
Do 3D Interpolation or ECD Calculator have ads?
Which is updated more often, 3D Interpolation or ECD Calculator?
Other comparisons
