Comparison

Mud Weight vs Kyanite Pro

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

Head to head
About

Mud Weight

This utility app assists oil and gas professionals with quick calculations for drilling fluid weight. It allows users to adjust parameters like specific gravity and sack weight, save preferences for different wells, and calculate material needs.

Highlights
  • Adjust specific gravity
  • Calculate sack weight
  • Manage pallet sizes
  • Save mud and material preferences
  • Create multiple wells
  • Calculate material amounts
Features
Currently charting
Read full description

Mud Weight The creators of the top-rated app, Oilfield Calendar, offer a solution to another oilfield problem. Mud Weight is designed to provide fast answers for everyday calculations. Mud Weight, a simple to use calculator for the oil and gas professional. • Adjust specific gravity, weight of sacks, and pallet sizes. • Save mud and material preferences for different wells. • From Mud Men to Derrick Men, anyone weighting up will have a new favorite app. • Built by Oilfield guys for Oilfield users, putting out the best productivity apps in the industry. How to use Mud Weight • After you set your specific gravity, sack, and pallet sizes; enter your current then desired mud density. • The amount of weight material is displayed in a variety of measurements. • Save your parameters and create more wells as needed. You’ve got your hardhat, steal toes, and safety glasses, now add Mud Weight to the essential tools you need when working in the patch. Make your calculations easy, keep your life turning to the right. ** Feel free to drop us a line! We’re always listening to your suggestions and strive to improve our apps! If you have any feedback just contact us, support@archimedesworkshop.co ** ** Are you happy with the Mud Weight app? We’d love to hear about it! Please take a moment to leave us a nice review, it truly helps us continue creating great tools for the industry. ** While you’re in the sharing mood, go ahead and post this app on Facebook too. Be Good!

About

Kyanite Pro

This app offers a suite of offline drilling calculators and reference tools for oil and gas professionals. It includes features for mud engineers, cementers, and directional drillers, with options to share data with crews. A free tier provides basic tools, while a subscription unlocks advanced calculators and job sheets.

Highlights
  • Offline drilling calculators
  • Mud, cement, and directional drilling tools
  • Field notes and reference charts
  • Crew data sharing
  • Kill sheet and cement job sheet
  • Chemical inventory management
Features
Read full description

A professional calculation and reference tool for the people who run the well: drilling and mud engineers, solids control hands, cementers, directional drillers and MWD hands. The calculators work completely offline. No ads and no tracking, and no account is needed to use them. You only sign in to share records with your crew or use the web console. FREE TO START The scientific calculator, field notes, reference charts, volume tables and the hitch calendar are free, along with the full calculator catalog so you can see what you are paying for. KYANITE PRO Unlocks the 130+ field calculators, kill sheets, cement job sheets, gain/loss sheets, LCM build sheets, location volumes and chemical inventory. Start with a 7-day free trial, then $9.99 per month or $50 per year. It all works with no signal. KYANITE ULTRA Everything in Pro, plus DrillIQ and MudIQ, AI assistants for drilling engineering and drilling fluids that use your active well's figures, the Live Rig dashboard and the web console at app.kyanitepro.com. $20 per month or $119.99 per year. SHARE WITH YOUR CREW Keep one set of figures in front of everybody on location. Share tank gauge readings, chemical inventory, notes, LCM build sheets, kill sheets and cement jobs with the hands you work with, and every phone stays in step. Anything entered with no signal goes up when you have coverage, and your records stay private until you choose to share them. 130+ CALCULATORS Drilling engineering: capacities, volumes, string displacement, pump output and strokes, circulation times, hydrostatic, gradient, EMW, ECD, MAASP, lag time and ROP. Drilling fluids: mud weight conversions, oil/water ratio, weighted mixing, barite and hematite addition, dilution, PV, YP, gel strength, API fluid loss, retort solids and alkalinity. Solids control: solids percentage, low and high gravity solids, dilution and discard volume, screen mesh, centrifuge and hydrocyclone. Cementing: slurry yield and density, mix water, additives by percent BWOC, sacks, annular volume with hole excess, top of cement, balanced plug, displacement and strokes. Directional and MWD: minimum curvature, dogleg severity, interpolation, closure and vertical section, build and tangent sections, projections ahead, slide footage and toolface. Well control: formation pressure from SIDPP, kill mud weight, initial and final circulating pressure, the step-down schedule, maximum allowable mud weight from a leak-off test, MAASP, influx height and gas expansion. KILL SHEET A full IADC-style vertical well kill sheet you fill in before you need it. Keep the pre-recorded half current on a quiet tour; if the well is shut in, enter SIDPP, SICP and pit gain and the sheet works the kill with a full step-down schedule. CEMENT JOB SHEET Lay out a primary job end to end: capacities, barrels, sacks and mix water, the annulus drawn to scale and a pump schedule. Casing presets from 20 to 4-1/2 inch. LCM BUILD SHEET Design a lost circulation pill from your own inventory: pounds, sacks, concentration and cost per barrel, with a stock check. CHEMICAL INVENTORY A daily ledger of received, used, transferred and adjusted stock for every product. Old days are never overwritten. BUILT FOR THE FIELD Large touch targets and big results, readable in gloves and in the sun. ENGINEERING INTEGRITY Every calculator shows its equation, units, assumptions and a verification status: VERIFIED, NEEDS VERIFICATION or EQUIPMENT SPECIFIC. IMPORTANT Kyanite Engineering is a calculation and reference aid, not a well control program and not a substitute for engineering judgement. All results must be verified by qualified personnel. Well control decisions must follow the operator's and contractor's program and the person in charge on location. Subscriptions renew automatically unless cancelled at least 24 hours before the period ends. Terms: https://support.kyanitepro.com/terms.html Privacy: https://support.kyanitepro.com/privacy.html

Screenshots

Mud Weight4 screens
Kyanite Pro4 screens

Verdict

The call

The clearest difference is price: Kyanite Pro at Free against Mud Weight's $0.99. Kyanite Pro also leads on rating (5.0 vs 3.0) and update cadence (every 8 days vs every 4 months). Mud Weight's advantage is in-app purchases (none vs 7) and chart position (#159 vs unranked). On ratings volume, ads 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

CostPrice · In-app purchases · Ads · Monetization

Kyanite Pro is free to download; Mud Weight costs $0.99 up front. Kyanite Pro sells 7 in-app purchases, starting at $9.99 per month. Mud Weight asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Kyanite Pro holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

UpkeepUpdate frequency

Mud Weight ships an update every 4 months, Kyanite Pro every 8 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard7 real differences · 3 level
Mud Weight versus Kyanite Pro: the parameters behind the verdict, then further details
ParameterMud WeightKyanite Pro
Price$0.99Free — better
Rating3.0 (2 ratings)5.0 (2 ratings) — better
Number of ratings22
Update frequencyEvery 4 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
Best chart rank#159 — better—
DevicesiPhone, iPodiPhone, iPad
Requires iOS10.0 — better18.0
Further details — not scored
Size86 MB30 MB
Age rating4+4+
DeveloperGoodStampMike Haynes

Customer experience

Mud Weight

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

Kyanite Pro

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Mud Weight

No in-app purchases

7 purchases

Kyanite Pro

Subscriptions4
  • Kyanite Pro Monthly7 Days trial$9.991 Month
  • Kyanite Ultra Monthly$20.001 Month
  • Kyanite Pro Yearly7 Days trial$50.001 Year
Show 1 more
  • Kyanite Ultra Yearly$119.991 Year
One-time3
  • Starter Pack$2.99
  • Value Pack$4.99
  • Professional Pack$9.99

Questions

Is Mud Weight free?
Mud Weight costs $0.99, with no in-app purchases.
Is Kyanite Pro free?
Kyanite Pro is free to download, with in-app purchases available.
Which has better reviews, Mud Weight or Kyanite Pro?
Kyanite Pro is rated higher. Mud Weight averages 3.0 out of 5 from 2 ratings, while Kyanite Pro averages 5.0 from 2 ratings.
Do Mud Weight or Kyanite Pro have ads?
Neither Mud Weight nor Kyanite Pro shows ads.
Which is updated more often, Mud Weight or Kyanite Pro?
Mud Weight ships an update every 4 months, and Kyanite Pro every 8 days. Most recently, Mud Weight was updated on October 24, 2026 and Kyanite Pro on October 25, 2026.

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