Comparison

Driller's Method Worksheets vs Unit Ⅽonverter

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

Head to head
About

Driller's Method Worksheets

Features
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This app utilizes standardized Worksheets based on the Driller's method for well control operations following a kick. It supports both floating rigs with subsea stacks and surface stack operations. Designed for field applications and instructional use, it helps engineers and rig teams deepen their understanding of the Driller's method. Key Features & Integration * Fully compatible with field workflows and training scenarios. * Seamlessly import data files to populate kill sheets directly from our suite of well control apps: Drilling Hydraulics, Drilling Simulator 1, 2 & 3, Kick Game, Kick Tolerance, LOT Simulator, MPD Simulator, Well Control Methods, and Well Control Simulator 1 & 2.
 Our Mission Developed alongside industry experts using established spreadsheets, this app provides an accessible, cost-effective tool for drilling engineers, toolpushers, drillers, technicians, students, and instructors. It is designed as a practical field utility and learning companion, not a replacement for full-scale commercial engineering software. Feedback & Community We continuously improve our tools. Feel free to share feedback, report bugs, suggest translation refinements, or share this app with your colleagues. Thanks DISCLAIMER: These tools and materials are provided "as is" and "as available," without warranties of any kind, express or implied. You are solely responsible for verifying the accuracy and appropriateness of any calculations or data generated by this application prior to use. Any reliance on or use of these tools is strictly at your own risk. In no event shall the developer be liable for any direct, indirect, incidental, or consequential damages resulting from the use or inability to use this application.

About

Unit Ⅽonverter

Easily convert between over 1600 units of measurement across 75 categories, including custom units and complex calculations. Supports offline mode and offers a convenient history of your conversions.

Highlights
  • Convert over 1600 units in 75 categories
  • Supports custom units and combinations
  • Calculator for expression input
  • View conversion histories
  • Add favorite units
  • Offline mode
  • Copy and share results
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Unit Converter enables any user to quickly convert between any units of measurement—including custom units and combinations of units—in just a few simple steps. Conversion of units is the conversion between different units of measurement for the same quantity, typically through multiplicative conversion factors. Unit Converter application provides a conversion calculator for all types of measurement units. Features list - Convert all units simultaneously. - Calculator for expression input. - View conversion histories. - Add conversion to the favorite units. - Support offline mode, work without internet whenever and wherever. - All in one tool offering with multiple unit conversions. - Swap unit by pressing button on the interface. - Copying and Sharing the conversation results. Conversion with more than 1600 units of the measurements in 75 categories. - Common converters: Length, Currency (more than 150 world currencies), Temperature, Time, Weight, Fuel, Area, Volume, Angle, Pressure, Energy&Power, Speed, Force, Number, Data storage. - Engineering converters: Velocity angular, Acceleration, Acceleration angular, Density, Specific volume, Moment of Inertia, Moment of Force, Torque. - Hear converters: Fuel efficiency mass, Fuel efficiency volume, temperature interval, thermal expansion, Thermal resistance, Thermal conductivity, Specific heat capacity, Heat density, Heat flux density, Heat transfer coefficient. - Fluids converters: Flow, Flow mass, Flow molar, Mass Flux density, Concentration Molar, Concentration solution, Viscosity dynamic, Surface tension, Permeability. - Light converters: Luminance, Luminous Intensity, Illumination, Digital Image Resolution, Frequency wavelength. - Electricity converters: Charge, Linear charge density, surface charge density, volume charge density, ... - Magnetism converters: Magnetomotive Force, Magnetic field strength, Magnetic Flux, Magnetic Flux Density. - Radiology converters: Radiation, Radiation activity, Radiation exposure, Radiation absorbed. - Other converters: Prefixes, data transfer, sound, typography, Volume lumber. #UNITCONVERTER offers auto-renewing subscription option: $1.99 per month By subscribing you get all-purpose converters, live exchange rates and no advertising. Payment will be charged to iTunes Account at confirmation of purchase. Your subscription will automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Your account will be charged for renewal within 24-hours prior to the end of the current period. Subscriptions may be managed and auto-renewal may be turned off by going to the Account Settings after purchase. No cancellation of the current subscription is allowed during active subscription period. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Terms of Use: https://tos.vidanimate.co Privacy Policy: https://privacy.vidanimate.co

Screenshots

Unit Ⅽonverter4 screens

Verdict

The call

The clearest difference is price: Unit Ⅽonverter at Free against Driller's Method Worksheets's $19.99. Unit Ⅽonverter also leads on update cadence (every 3 weeks vs every 4 months). Driller's Method Worksheets's advantage is in-app purchases (none vs 2) and ads (none vs shown). On 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

Unit Ⅽonverter is free to download; Driller's Method Worksheets costs $19.99 up front. Unit Ⅽonverter sells 2 in-app purchases, starting at $1.99 per month. Driller's Method Worksheets asks for nothing beyond the download.

UpkeepUpdate frequency

Driller's Method Worksheets ships an update every 4 months, Unit Ⅽonverter every 3 weeks. Both last shipped on October 12, 2026.

Scorecard5 real differences · 3 level
Driller's Method Worksheets versus Unit Ⅽonverter: the parameters behind the verdict, then further details
ParameterDriller's Method WorksheetsUnit Ⅽonverter
Price$19.99Free — better
Positive reviews—25.0% of reviews
Update frequencyEvery 4 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPadiPhone, iPad — better
Requires iOS15.6 — better18.0
Further details — not scored
Size10 MB8 MB
Age rating4+4+
DeveloperCarlos MouraPolymath Company Limited

In-app purchases

None

Driller's Method Worksheets

No in-app purchases

2 purchases

Unit Ⅽonverter

Subscriptions1
  • UnitConverterPremiumMonthly$1.991 Month
One-time1
  • UnitConverterPremiumLifeTime$33.99

Questions

Is Driller's Method Worksheets free?
Driller's Method Worksheets costs $19.99, with no in-app purchases.
Is Unit Ⅽonverter free?
Unit Ⅽonverter is free to download, with in-app purchases available.
Do Driller's Method Worksheets or Unit Ⅽonverter have ads?
Unit Ⅽonverter shows ads; Driller's Method Worksheets does not.
Which is updated more often, Driller's Method Worksheets or Unit Ⅽonverter?
Driller's Method Worksheets ships an update every 4 months, and Unit Ⅽonverter every 3 weeks. Most recently, Driller's Method Worksheets was updated on October 12, 2026 and Unit Ⅽonverter on October 12, 2026.

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