Mud Engineer vs RigCLOUD
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.
RigCLOUD
Access and analyze well data to make informed drilling decisions. Understand rig performance with daily reports and detailed operational insights. Review well annotations and remarks with high-resolution data visualization.
- Access active and historical well data
- Daily Performance Reports for rig performance
- Configurable scroll graph for operational insights
- High-resolution data visibility
- Access Toursheets and Daily Reporting
- Searchable well annotations and remarks
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Using the latest data management technology, RigCloud® empowers you to quickly, effectively and easily make informed drilling decisions. - Access to active and historical well data - Quickly understand rig performance using Daily Performance Reports - Drill down into your operation with the highly configurable scroll graph - Get maximum visibility with high-resolution data - Easily access Toursheets and Daily Reporting - Review well annotation with searchable, indexed Remarks
Screenshots
Verdict
The clearest difference is price: RigCLOUD at Free against Mud Engineer's $2.99. RigCLOUD also leads on rating (4.4 vs 1.0) and update cadence (every 2 months vs every 25 months). Mud Engineer's advantage is chart position (#75 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
RigCLOUD is free to download; Mud Engineer costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
RigCLOUD holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: RigCLOUD has 30 ratings behind it against 1, so its average is the more settled of the two.
Mud Engineer ships an update every 25 months, RigCLOUD every 2 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.
| Parameter | Mud Engineer | RigCLOUD |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 1.0 (1 ratings) | 4.4 (30 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 30 — better |
| Update frequency | Every 25 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #75 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 32 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | bader alshammari | NABORS DRILLING TECHNOLOGIES USA, INC. |
Customer experience
Mud Engineer
RigCLOUD
In-app purchases
Mud Engineer
No in-app purchases
RigCLOUD
No in-app purchases







