Comparison

Mud Engineer vs RigCLOUD

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Final Mud Weight calculation
  • Volume calculations
  • Sack calculations
  • lb/bbl calculation
  • Weight Up calculation
Features
Currently charting
Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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

Mud Engineer3 screens
RigCLOUD4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 5 level
Mud Engineer versus RigCLOUD: the parameters behind the verdict, then further details
ParameterMud EngineerRigCLOUD
Price$2.99Free — better
Rating1.0 (1 ratings)4.4 (30 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings130 — better
Update frequencyEvery 25 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
Best chart rank#75 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.014.0 — better
Further details — not scored
Size32 MB16 MB
Age rating4+4+
Developerbader alshammariNABORS DRILLING TECHNOLOGIES USA, INC.

Customer experience

Mud Engineer

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

RigCLOUD

All ratings30 ratings
Positive83.3%
Neutral3.3%
Negative13.3%

In-app purchases

None

Mud Engineer

No in-app purchases

None

RigCLOUD

No in-app purchases

Questions

Is Mud Engineer free?
Mud Engineer costs $2.99, with no in-app purchases.
Is RigCLOUD free?
RigCLOUD is free to download, with no in-app purchases.
Which has better reviews, Mud Engineer or RigCLOUD?
RigCLOUD is rated higher. Mud Engineer averages 1.0 out of 5 from 1 ratings, while RigCLOUD averages 4.4 from 30 ratings.
Do Mud Engineer or RigCLOUD have ads?
Neither Mud Engineer nor RigCLOUD shows ads.
Which is updated more often, Mud Engineer or RigCLOUD?
Mud Engineer ships an update every 25 months, and RigCLOUD every 2 months. Most recently, Mud Engineer was updated on November 6, 2026 and RigCLOUD on November 2, 2026.

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