Mud fluid vs Workstrings
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mud fluid
This app assists mud engineers with rapid calculations for wellbore flushing, including time and volume. It supports drilling intervals like surface casing and production casing, and can also compute solution weight and dilution. Metric units are currently available, with imperial units planned for a future update.
- Wellbore flushing time and volume calculation
- Supports drilling intervals
- Solution weight calculation
- Dilution calculation
- Metric units support
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Mud fluid - an app for mud engineers that allows you to quickly calculate the time and volume of wellbore flushing. For convenience, well flushing is divided into drilling intervals: surface casing, production casing and liner. It is also possible to calculate the weight of the solution and the dilution. At the moment only metric units are available, in the future there will be an update to the ability to select imperial units
Workstrings
Access and share detailed product specifications for a wide range of tubular goods and specialized joints. Easily search, view, and download spec sheets for items like drill pipe, landing string, and drill collars.
- Search product specifications
- View detailed spec sheets
- Download specification documents
- Share product information
- Browse tubular goods
- Access Worktech Joints specs
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The Workstrings International Spec Sheet finder allows you to search for, view, download, and share specifications for a variety of Workstrings' products including Drill Pipe, Landing String, Heavy Weight Drill Pipe, Drill Collars, Tubing, Completion and Intervention Tubulars, and Worktech Joints
Screenshots
Verdict
The clearest difference is in-app purchases: Workstrings at none against Mud fluid's 3. Workstrings also leads on review sentiment (100% vs 77%) and update cadence (every 8 days vs every 2 weeks). On price, 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
Both are free to download. Mud fluid sells 3 one-off in-app purchases. Workstrings asks for nothing beyond the download.
Mud fluid ships an update every 2 weeks, Workstrings every 8 days. The most recent releases landed on June 24, 2026 and June 10, 2026 respectively.
| Parameter | Mud fluid | Workstrings |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (14 ratings) — better |
| Positive reviews | 76.9% of reviews | 100.0% of reviews — better |
| Number of ratings | — | 14 — better |
| Update frequency | Every 2 weeks | Every 8 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 16.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 135 MB |
| Age rating | 4+ | 4+ |
| Developer | Dmitry Pavlov | SESI Holdings, Inc. |
Customer experience
Mud fluid
Workstrings
In-app purchases
Mud fluid
- Tips$0.99
- For cookies$0.99
- For coffee$4.99
Workstrings
No in-app purchases
