Combine Fluids vs ECD Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Combine Fluids
This utility app helps oil and gas professionals quickly calculate fluid volume combinations. It allows users to input various fluid types and density requirements, saving different mix possibilities for specific wells.
- Combine up to 10 fluid types
- Save fluid mix possibilities per well
- Calculate volume combinations
- Input mud density requirements
- Supports volume limitations or not
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Combine Fluids The creators of the top-rated app, Oilfield Calendar, offer a solution to another oilfield problem. Combine Fluids is designed to provide fast answers for everyday calculations. Combine Fluids, a simple to use calculator for the oil and gas professional. • Combine up to 10 different fluid types. • Save different mix possibilities for different wells. • From Mud Men to Derrick Men, anyone combining fluids will have a new favorite app. • Built by Oilfield guys for Oilfield user’s, putting out the best productivity apps in the industry. How to use Combine Fluids • Select weather you have volume limitations or not. • Enter your current or desired mud density, the mixing requirements will then be displayed for that information. • Save your parameters and create more volume combinations as needed. You’ve got your hardhat, steal toes, and safety glasses, now add Combine Fluids to the essential tools you need when working in the patch. Make your calculations easy, keep your life turning to the right. ** Feel free to drop us a line! We’re always listening to your suggestions and strive to improve our apps! If you have any feedback just contact us, support@archimedesworkshop.co ** ** Are you happy with the Combine Fluids app? We’d love to hear about it! Please take a moment to leave us a nice review, it truly helps us continue creating great tools for the industry! ** While you’re in the sharing mood, go ahead and post about it on Facebook too, Be Good!
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 Combine Fluids's $0.99. ECD Calculator also leads on rating (5.0 vs 3.7) and review sentiment (100% vs 67%). Combine Fluids's advantage is in-app purchases (none vs 2) and chart position (#170 vs unranked). On ratings volume, 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; Combine Fluids costs $0.99 up front. ECD Calculator sells 2 one-off in-app purchases. Combine Fluids asks for nothing beyond the download.
ECD Calculator holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 5 respectively. Written reviews point the same way: 67% of Combine Fluids's written reviews are positive against 100% of ECD Calculator's.
Combine Fluids ships an update monthly, ECD Calculator every 5 days. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.
| Parameter | Combine Fluids | ECD Calculator |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.7 (3 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 | 5 — better |
| Update frequency | Monthly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free — better |
| Best chart rank | #170 — better | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 10.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 85 MB | 45 MB |
| Age rating | 4+ | 17+ |
| Developer | GoodStamp | Drillsoft LLC |
Customer experience
Combine Fluids
ECD Calculator
In-app purchases
Combine Fluids
No in-app purchases
ECD Calculator
- 50 credits$3.99
- 300 Credits$9.99
Questions
Is Combine Fluids free?
Is ECD Calculator free?
Which has better reviews, Combine Fluids or ECD Calculator?
Do Combine Fluids or ECD Calculator have ads?
Which is updated more often, Combine Fluids or ECD Calculator?
Other comparisons
