Wait and Weight Method vs ECD Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Wait and Weight Method
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This app is designed for both iPhone and iPad. This application uses the basic calculations of the "Wait and Weight" method to control oil wells after the occurrence of kick during drilling operations on floating platforms and landing rigs. It is an useful tool to import data files to fill kill sheets from our apps: (Driling Hydraulics, Drilling Simulator, Kick Game, Kick Tolerance, LOT Simulator, MPD Simulator and Well Control Simulator) available for sale in our portfolio on the App Store. It is can be applied on the field and also help in the understanding of the "Wait and Weight" method for well control. This app was developed based on existing spreadsheets. There is no comparison with any other software. 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. There is no intention to replace the professional softwares. You can contribute with suggestions for improvements, correcting the translation to english, reporting bugs and spreading it to 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 your 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
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ECD calculator help drilling and mud engineers calculate the ECD at any point with a few click
Screenshots
Verdict
The clearest difference is price: ECD Calculator at Free against Wait and Weight Method's $19.99. ECD Calculator also leads on update cadence (every 5 days vs every 28 months). Wait and Weight Method's advantage is in-app purchases (none vs 2). On ads, 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
ECD Calculator is free to download; Wait and Weight Method costs $19.99 up front. ECD Calculator sells 2 one-off in-app purchases. Wait and Weight Method asks for nothing beyond the download.
Wait and Weight Method ships an update every 28 months, ECD Calculator every 5 days. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.
| Parameter | Wait and Weight Method | ECD Calculator |
|---|---|---|
| Price | $19.99 | Free — better |
| Rating | — | 5.0 (5 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 5 — better |
| Update frequency | Every 28 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 17 MB | 45 MB |
| Age rating | 4+ | 17+ |
| Developer | Carlos Moura | Drillsoft LLC |
In-app purchases
Wait and Weight Method
No in-app purchases
ECD Calculator
- 50 credits$3.99
- 300 Credits$9.99
Questions
Is Wait and Weight Method free?
Is ECD Calculator free?
Do Wait and Weight Method or ECD Calculator have ads?
Which is updated more often, Wait and Weight Method or ECD Calculator?
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