Mud Weight vs WellCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Adjust specific gravity
- Calculate sack weight
- Manage pallet sizes
- Save mud and material preferences
- Create multiple wells
- Calculate material amounts
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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!
WellCalc
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WellCalc is a field-ready petroleum engineering calculator for drilling, completions, production, reservoir, and well-control work. Keep the operating context beside the math instead of scattering it across screenshots and notes. WORK FROM A FIELD JOB - Save well name, field, measured depth, hole size, mud weight, and preferred unit system. - Reuse that context across guided workflows and calculations. - Keep recent work and saved scenarios organized by job. CALCULATIONS YOU CAN REVIEW - 97 calculations across 16 engineering categories. - Guided Kill Sheet, Cement Requirements, Trip, Hydraulics, and Economics workflows. - Formula source, formula-set version, operating note, expected range, and safety tier where applicable. - Oilfield and metric units with explicit labels and dimensional checks. - Saved favorites, calculation history, notes, and reference tables. - Audit-ready PDF field reports and CSV data export. FREE - One Field Job. - Well Control, Pipe & Annular, Pumps, Mud Engineering, and Unit Conversion categories. WELLCALC PRO - All calculation categories and guided workflows. - Unlimited Field Jobs. - Formula provenance throughout the library. - PDF and CSV history export. Your saved jobs and calculations stay on this device. WellCalc does not use generative AI or send calculations to an AI service. Subscriptions renew automatically unless canceled in your Apple ID settings. Restore an existing purchase from Settings > Restore Purchases. IMPORTANT: WellCalc is a field reference, not an engineering approval. Verify safety-critical outputs against the approved program, current measurements, equipment limits, and company procedures. TERMS OF USE Product Terms of Use: https://www.uncommonweather.com/legal/apps/wellcalc-terms.html Apple Standard Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: WellCalc at Free against Mud Weight's $0.99. WellCalc also leads on update cadence (weekly vs every 4 months). Mud Weight's advantage is in-app purchases (none vs 2) and iOS requirement (10.0 vs 18.0). On 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
WellCalc is free to download; Mud Weight costs $0.99 up front. WellCalc sells 2 in-app purchases, starting at $4.99 per month. Mud Weight asks for nothing beyond the download.
Mud Weight ships an update every 4 months, WellCalc weekly. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.
| Parameter | Mud Weight | WellCalc |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 4 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 10.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 86 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | GoodStamp | Ryan Tinklepaugh |
In-app purchases
Mud Weight
No in-app purchases
WellCalc
- WellCalc Pro Monthly$4.991 Month
- WellCalc Pro Yearly$29.991 Year







