Mud Engineer vs Pason
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
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Mud Engineer App – Drilling Fluids Calculator Mud engineers play a crucial role in keeping drilling programs running smoothly. The Mud Engineer App is an essential field tool that gives you 14 drilling-fluid and well-control calculators in one place, built for rig work: fast input, clear step-by-step equations, professional PDF reports, and full offline use. CALCULATORS • Final Mud Weight – mix two fluids and get the resulting weight and volume • Volume – volumes of two fluids needed to build a required volume at a target weight • Reduce Mud Weight – barrels of a lighter fluid (water, seawater, diesel) to dilute the mud • Weight Up – sacks, lb/bbl, total material, volume increase and final volume (barite, CaCO3, hematite) • Hydrostatic Pressure and pressure gradient • Equivalent Circulating Density (ECD) • Annular Velocity • Triplex Pump Output – bbl/stroke, bbl/min and flow rate • Kill Sheet – Kill Mud Weight, ICP and FCP, with safety margin • Bottoms Up – annular volume, strokes and time • Pipe Capacity & Displacement – open-ended and closed-end • Oil/Water Ratio – from retort readings, with oil or water to add to reach a target ratio • Rheology – PV, YP, apparent viscosity, n and K from Fann 600/300 readings • EMW & Pressure Gradient BUILT FOR THE FIELD • Step-by-step worked equation with your own numbers, plus the formula reference • Change units right inside each field – values convert automatically • Quick-value chips: barite, CaCO3, hematite, water, seawater, diesel, sack sizes, pump efficiency • Smart checks catch unit slips (e.g. 35 typed into an SG field) and impossible inputs • Values carry over between calculators: pump output feeds Bottoms Up and Annular Velocity, the new mud weight feeds Hydrostatic, ECD and Kill Sheet WELLS & HISTORY • Manage multiple wells (name, rig, field); each well keeps its own calculations and values • Every calculation is saved automatically in a searchable history, filtered by well, date or calculator • Export history to CSV (Excel) or a combined PDF PROFESSIONAL PDF REPORTS Input and result tables, the worked equation, the reference, the well, your name or company, the date and an app watermark – ready to share. UNITS & SETTINGS • Oilfield and metric units: ppg, SG, g/cm³, kg/m³, pcf, bbl, m³, gal, L, ft, m, in, mm, psi, bar, kPa, gpm, L/min, bbl/min, m³/min • Exact unit conversions • English and Arabic interface • Favorites and search on the home screen • Adjustable decimal places, light or dark theme • Works fully offline – no account, no ads, your data stays on your device Formulas follow standard oilfield references (Lapeyrouse, Formulas and Calculations for Drilling; IWCF kill sheet; API RP 13B) and are verified against published worked examples. Special thanks to Eng. Mahmoud Elbeltagy for contributing to the development of these calculations.
Pason
Access real-time drilling data for your active wells anytime, anywhere. Securely view well information, customize data displays, and access detailed memos to make informed, time-sensitive decisions.
- Real-time drilling data access
- Secure data transmission
- Customizable data display
- View well memos
- 1-second data updates
- Active well list with drilled depth
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Pason Live delivers your real-time drilling data to you anytime, anywhere. It provides fast and secure data access enabling you to make time-sensitive decisions about your active wells when it matters most. - Secure access to your real-time data - Enhance your data view with the customizable display - View memos for more information about your well Use Pason Live to access your well information: - Access real-time well information securely via 1-second updates - Display a list of all your active wells with drilled depth for each well - Keep your well data secure with encrypted data transmission Customize your display to better view your data: - Zoom in and out on details of a graph - View data in boxes view - Customize the scale settings for your drilling parameters - Configure predefined templates to save and quickly access your preferred trace views - Choose units for your drilling parameters and define your trace colors View memos for more information about your well: - View a complete list of memos for a well - View memos in the trace view - Select and read individual memos - Send memos to the rig Pason, the Pason stylized logo and Live are trademarks of Pason Systems Corp.
Screenshots
Verdict
The clearest difference is price: Pason at Free against Mud Engineer's $2.99. Pason also leads on rating (4.4 vs 1.0) and update cadence (every 5 weeks vs every 25 months). Mud Engineer's advantage is review sentiment (100% vs 75%) and chart position (#24 vs unranked). On ads, in-app purchases, 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
Pason is free to download; Mud Engineer costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Pason holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Pason 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 75% of Pason's, so the app with the better star average is not the one people write more warmly about.
Mud Engineer ships an update every 25 months, Pason every 5 weeks. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.
| Parameter | Mud Engineer | Pason |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 1.0 (1 ratings) | 4.4 (22 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 75.0% of reviews |
| Number of ratings | 1 | 22 — better |
| Update frequency | Every 25 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #24 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 32 MB | 64 MB |
| Age rating | 4+ | 4+ |
| Developer | bader alshammari | Pason Systems Corp |
Customer experience
Mud Engineer
Pason
In-app purchases
Mud Engineer
No in-app purchases
Pason
No in-app purchases







