Mud Engineer vs Max Drilling
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mud Engineer
This app provides essential drilling calculations for mud engineers. It helps determine final mud weight, volume adjustments, and the number of sacks needed for various drilling scenarios.
- Final Mud Weight calculation
- Volume calculations
- Sack calculations
- lb/bbl calculation
- Weight Up calculation
Read full descriptionHide full description
Mud engineers play a crucial role in ensuring the smooth operation of drilling programs. The Mud Engineer App is an essential tool for mud engineers, providing a foundation for essential drilling calculations. These calculations include Final Mud Weight, Final Volume, Volume 1, Volume 2, End Volume, BBLs required to adjust Mud Weight, Number of Sacks, Volume Increase, lb/bbl, Weight Up, Hydrostatic Pressure, Equivalent Circulating Density (ECD), Annular Velocity, and Pump Output. Calculate the final mud weight by mixing two fluids with different mud weights. Determine the required volume of each fluid with known mud weights and a desired final weight to achieve the desired mud weight. Calculate the number of barrels needed to add a fluid with a known density to reduce mud weight. Weight Up calculation. Calculate hydrostatic pressure from mud weight and true vertical depth. Determine the Equivalent Circulating Density (ECD) from annular pressure loss. Calculate annular velocity from pump rate and hole/pipe geometry. Calculate triplex pump output per stroke and flow rate. Every calculation shows a step-by-step equation worked out with your own numbers and your chosen units, and can be exported as a professional PDF report with input and result tables, your name or company, the date, and an app watermark. All results are saved automatically in a searchable History, with support for multiple unit systems, customizable defaults, decimal precision, and a light or dark theme. Special thanks to Eng. Mahmoud Elbeltagy for contributing to the development of these calculations.
Max Drilling
Monitor drilling operations in real-time with instant access to active and historical well data. Visualize drilling parameters, view rig reports, and communicate securely with your team from anywhere.
- 1-second data streaming
- Customizable data visualization
- Time and depth views
- Lagged channel tracing
- Rig and well reports
- Integrated chat
- Collaborative notes
Read full descriptionHide full description
The new Max Drilling mobile app (formerly WellData MobileRT) provides easy access to active and historical well data so you can monitor your drilling operations from wherever you are. With NOV’s edge infrastructure and M/D Totco instrumentation, your data flows securely from sensor to screen—no third parties involved—so you see it instantly, in real time, with one-second resolution. Key Features: • 1-second data streaming: View real-time drilling data on your mobile device with less than a second of lag between the rig site and your screen (excluding satellite latency). • Customizable visualization: Configure strip charts and traces with flexible options for units, scaling, and more. All tags and channels available in the RigSense Electronic Drilling Recorder (EDR) are accessible, including data from integrated applications like Drilling Beliefs & Analytics and 3rd-party survey data. • Time and depth views: Access both active and historical well data by time or depth for full operational visibility. • Lagged channel tracing: Monitor channels such as gamma ray, methane, propane, total gas, and total gas normalized. • Rig and well reports: View IADC Reports (toursheets), Drilling Contractor Morning Reports, and well information including Bit Records and BHA Summaries. • Integrated chat: Communicate instantly between the rig and other Max Drilling mobile users. • Collaborative notes: View all rig notes or add your own to the official EDR notes in the time-series data. • Secure and compliant: Built on SOC 1 Type II–audited processes and end-to-end SSL/TLS encryption for secure access from anywhere. • Rig locations: View your wells on a map for quick spatial awareness and access directions to the location. • (Coming Soon) Integrated chat: Communicate instantly between the rig and other Max Drilling mobile users. If you experience any difficulties installing or using Max Drilling, please contact the Help Desk at WellDataSupport@nov.com or 1-855-935-5328.
Screenshots
Verdict
The clearest difference is price: Max Drilling at Free against Mud Engineer's $2.99. Max Drilling also leads on rating (3.2 vs 1.0) and update cadence (every 4 months vs every 34 months). Mud Engineer's advantage is review sentiment (100% vs 63%) and chart position (#70 vs unranked). On 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
Max Drilling is free to download; Mud Engineer costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Max Drilling holds the better App Store score, 3.2 against 1.0. That said, the two scores are not equally well evidenced: Max Drilling has 22 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 100% of Mud Engineer's written reviews are positive against 63% of Max Drilling's, so the app with the better star average is not the one people write more warmly about.
Mud Engineer ships an update every 34 months, Max Drilling every 4 months. The most recent releases landed on September 17, 2026 and September 23, 2026 respectively.
| Parameter | Mud Engineer | Max Drilling |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 1.0 (1 ratings) | 3.2 (22 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 62.5% of reviews |
| Number of ratings | 1 | 22 — better |
| Update frequency | Every 34 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #70 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 31 MB | 208 MB |
| Age rating | 17+ | 4+ |
| Developer | bader alshammari | NOV Inc. |
Customer experience
Mud Engineer
Max Drilling
In-app purchases
Mud Engineer
No in-app purchases
Max Drilling
No in-app purchases






