Mud Engineer Downloads & RevenueMud Engineer · App Store
Mud Engineer is #12 in Business Paid in United States and charting in 4 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
Developerbader alshammari
CategoryBusiness
Price2.99 USD
Released
Rating★ 1.0 (1)
Version2.2.1
Age rating4+
First seen by us
24 Sep 2026
24 Sep 2026📈Entered the top 10📈Charting in a new country✏️Description updated✏️Description updated📦Updated to version 2.2.1📦First update in 119 days🆕Its developer released another app: Mecha Core🆕Its developer released another app: قرية الحروف
Full timeline · 20 events
- 📈Mud Engineer entered the top 10Top Paid · Business · CA
- 📈Mud Engineer charting in a new countryCanada
- ✏️Mud Engineer: description updated· ID
- ✏️Mud Engineer: description updated· BR, US, SA
- ✏️Mud Engineer: age rating changed17+ → 4+
- ✏️Mud Engineer: needs a newer iOSiOS 13.0 → iOS 15.0
- 📦Mud Engineer updated to version 2.2.1What's New in 2.3.0
NEW CALCULATORS
• Kill Sheet (KMW, ICP, FCP)
• Bottoms Up (volume, strokes, time)
• Pipe Capacity & Displacement
• Oil/Water Ratio from retort
• Rheology (PV, YP, n, K)
• EMW & Pressure Gradient
NEW FEATURES
• Multiple wells: each well keeps its own calculations, reports and remembered values
• Arabic interface (Settings → Language)
• Change units inside each field, with automatic conversion
• Quick-value chips for barite, CaCO3, hematite, water, diesel, sack sizes and more
• Results carry over between related calculators
• Search and favorites on the home screen
• History search, well filter, and export to CSV or a combined PDF
• Reference shown under every equation and in PDF reports
IMPROVEMENTS
• Exact unit conversions and smarter input checks that catch unit mistakes
• Clearer equations: field-unit working plus the result in your units
• Works fully offline, including fonts
• Better layout on all phone and tablet sizes… more - 📦Mud Engineer: first update in 119 days
- 🆕Mud Engineer: its developer released another app: Mecha Core
- 📈Mud Engineer entered the top 10Top Paid · Business · BR
- 📈Mud Engineer charting in a new countryBrazil
- 🆕Mud Engineer: its developer released another app: قرية الحروف
- 📈Mud Engineer entered the top 100Top Paid · Business · ID
- 📈Mud Engineer entered the top 10Top Paid · Business · US
- 📈Mud Engineer charting in a new countrySaudi Arabia
- 📈Mud Engineer charting in a new countryIndonesia
- 🆕Mud Engineer first spotted by AppInsider#17 in Top Paid · Business · United States
- 🆕Mud Engineer: its developer released another app: مدير القطة
- 📦Mud Engineer version 2.2.0What's new in this version:
- 4 new calculators: Hydrostatic Pressure, ECD, Annular Velocity, Pump Output.
- Step-by-step equations shown with your numbers and your chosen unit.
- Professional PDF reports with in-app preview, tables, engineer name, date
- Calculation History: auto-saved, filter by date/type, full PDF export.
- Settings for default units, decimal places, and dark mode.
- Responsive design, performance improvements, and bug fixes.… more - 🆕Mud Engineer released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
1.0 ★
1 ratings
Measured
Best rank now
#12
Business PaidMeasured
Mud Engineer on the App Store
App details
App ID
992941305
Publisher
bader alshammari
On the store since
May 2015
11 years on the store
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
34 MB
Also listed in
Education
Where Mud Engineer's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| United States | BusinessPaid | #12 |
 Canada | BusinessPaid | #17 |
 Indonesia | BusinessPaid | #101 |
 Saudi Arabia | BusinessPaid | #163 |
Apps near Mud Engineer on the chart
Business Paid, around #12.
Ratings
App Store, worldwide.
Rating
1.0 ★
1 ratings
Measured
Ratings
1
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
4.0★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
20/100
faster than 0% of Business apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Mud Engineer
From recent reviews.
About Mud Engineer
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.
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.
Latest updates
2.2.1
What's New in 2.3.0
NEW CALCULATORS
• Kill Sheet (KMW, ICP, FCP)
• Bottoms Up (volume, strokes, time)
• Pipe Capacity & Displacement
• Oil/Water Ratio from retort
• Rheology (PV, YP, n, K)
• EMW & Pressure Gradient
NEW FEATURES
• Multiple wells: each well keeps its own calculations, reports and remembered values
• Arabic interface (Settings → Language)
• Change units inside each field, with automatic conversion
• Quick-value chips for barite, CaCO3, hematite, water, diesel, sack sizes and more
• Results carry over between related calculators
• Search and favorites on the home screen
• History search, well filter, and export to CSV or a combined PDF
• Reference shown under every equation and in PDF reports
IMPROVEMENTS
• Exact unit conversions and smarter input checks that catch unit mistakes
• Clearer equations: field-unit working plus the result in your units
• Works fully offline, including fonts
• Better layout on all phone and tablet sizes
2.2.0
What's new in this version:
- 4 new calculators: Hydrostatic Pressure, ECD, Annular Velocity, Pump Output.
- Step-by-step equations shown with your numbers and your chosen unit.
- Professional PDF reports with in-app preview, tables, engineer name, date
- Calculation History: auto-saved, filter by date/type, full PDF export.
- Settings for default units, decimal places, and dark mode.
- Responsive design, performance improvements, and bug fixes.
Store changes
What Mud Engineer changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Description updated
Description updated 
Age rating changed
17+ → 4+
