Comparison

Ultra Measure Master vs Thor Lithium

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

Head to head
About

Ultra Measure Master

This professional conversion calculator offers over 400 standard and metric unit conversions for linear, area, and volume measurements. It's ideal for professionals needing quick and accurate calculations in various dimensional formats, including feet-inch-fractions and decimal units.

Highlights
  • Over 400 conversion combinations
  • 60+ standard and metric units
  • Converts between feet-inch-fractions, decimal feet/inches, and metric
  • Calculates linear, area, and volume
  • Includes weight, velocity, flow rate, pressure, and temperature conversions
  • Built-in User's Guide with key-specific help
Features
Read full description

Professional Grade U.S. Standard to Metric Conversion Calculator by Calculated Industries The Ultra Measure Master® app from Calculated Industries gives you the power to solve metric and standard unit conversions on your iPhone and iPad. And while perhaps obvious, if you change from an iOS device to a non-iOS device, you WILL need to buy a new license as they are incompatible. Forget complex scientific calculators, memorizing conversion formulas or using tables — instantly calculate with more than 400 conversion combinations using 60 built-in standard and metric units. The Ultra Measure Master is especially helpful for those working in federal DOT environments where frequent metric to foot-inch conversions and “dual unit” reporting is required -- and includes a full User’s Guide built in as well as the ability to press and hold a key for specific help! Ideal for Engineers, Architects, Designers, Contractors/Builders, Draftspersons, Excavation/Highway Contractors, Scientists, Pharmaceutical Lab Techs, Purchasing, Importers/Exporters, Students (or anyone who needs fast, easy, professional unit conversions). • Work in and convert between all building dimensional formats: feet-inch-fractions, inch fraction, yards, decimal feet (10ths, 100ths), decimal inches and metric (m, cm, mm) • Easily calculate linear, area and volume measurements • Find dry and liquid weight per volume • Solve for velocity, flow rate, pressure, temperatures Created by Calculated Industries, the originator of the award-winning Construction Master® calculators. FEATURES: Dimensional Math and Conversions • More than 60 Standard and Metric (SI) units built-in • Over 400 conversion combinations • Works in and converts between • Feet-Inch-Fraction • Inch Fraction • Yards • Decimal Feet (10ths, 100ths), Decimal Inches • Full Metric (m, cm, mm) Dedicated Functions Help You Measure and Calculate: • Linear • Feet-Inch-Fractions • Yards, Miles • Decimal Feet/Inch • Millimeters, Centimeters, Meters and Kilometers • Area • Feet, Inch, Yards, Acres, Miles • Millimeters, Centimeters, Meters, Hectares and Kilometers • Volume • Feet, Inch, Yards, Miles • Millimeters, Centimeters, Meters, Kilometers • Gallons, Liters, Fluid Ounces • Acre-Feet and Board Feet • Weight • Pounds, Dry Ounces, Tons • Metric Tons, Grams and Kilograms • Weight per Volume • Tons per Cubic Yard • Pounds per Cubic Yard • Kilograms per Cubic Meter • Linear Velocity • Inches per Second • Feet per Second • Feet per Minute • Miles per Hour • Millimeters per Second/Minute • Meters per Second/Minute • Kilometers per Hour • Flow Rate • Ounces per Second • Gallons per Minute • Milliliters per Second • Liters per Second • Pressure • Pounds per Square Inch (PSI) • Pounds per Square Foot (PSF) • Kilopascal, Megapascal and Bars • Bending Moment • Inch-Pounds, Foot-Pounds and Newton-Meters • Temperature • Fahrenheit (°F) and Celsius (°C) Special Functions • Entry Editing Backspace Key – with a swipe of a finger • Cost per Unit: Solve unit cost and pricing • Paperless Tape • Board Feet • Memory function •User-Definable Preferences — set custom options: Fractions, Area, Volume. TRADEMARKS: Ultra Measure Master® and Construction Master® are registered trademarks of Calculated Industries, Inc.

About

Thor Lithium

Features
Read full description

**Thor Battery Health Manager** Precision Cell Protection, Zero Range Anxiety **CORE TECHNOLOGY** **1. Nanosecond Cell Monitoring** - Real-time voltage tracking ±1mV accuracy - 16-point thermal mapping - Dynamic current calibration ±0.5% tolerance **2. Adaptive Power Management** - Triple-stage overcharge/discharge protection - Active/passive balance control - Subzero charging activation (-30°C) **3. AI Health Intelligence** - >98% SOC estimation accuracy - SOH degradation alerts (90-day advance) - Deep-cycle lifetime analytics **AI RANGE FORECAST** 98% accurate usage-based predictions with journey power risk alerts **FAULT DIAGNOSTICS HUB** Automated detection of 9 failure modes including thermal anomalies and voltage deviation **EXTREME CLIMATE OPERATION** -30°C winter charging | 55°C cooling regulation **APPLICATION SOLUTIONS** **ELECTRIC VEHICLES** ・3+ year lifespan extension ・Real-time range calculation ・Charging station navigation **HOME ENERGY STORAGE** ・30% cost reduction via smart charging ・Thermal safety systems ・Remote status monitoring **OUTDOOR EXPEDITION** ・Arctic-mode battery activation ・Device power optimization ・Solar input maximization **COMPETITIVE ADVANTAGES** **BATTLE-TESTED SECURITY** Explosion prevention protocols | Military-grade encryption **CONTEXT-AWARE OPTIMIZATION** 15% capacity gain through usage-pattern adaptation **PERPETUAL UPGRADES** Monthly cloud-based algorithm enhancements **DOWNLOAD NOW** 300+ battery compatibility | ISO27001 certified | Free core functionality ---

Screenshots

Ultra Measure Master4 screens
Thor Lithium4 screens

Verdict

The call

The clearest difference is price: Thor Lithium at Free against Ultra Measure Master's $29.99. Thor Lithium also leads on update cadence (monthly vs every 11 months) and iOS requirement (13.0 vs 15.0). On ads, in-app purchases 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

Thor Lithium is free to download; Ultra Measure Master costs $29.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Ultra Measure Master ships an update every 11 months, Thor Lithium monthly. The most recent releases landed on October 23, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
Ultra Measure Master versus Thor Lithium: the parameters behind the verdict, then further details
ParameterUltra Measure MasterThor Lithium
Price$29.99Free — better
Rating5.0 (9 ratings) — better—
Positive reviews87.5% of reviews—
Number of ratings9 — better—
Update frequencyEvery 11 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size61 MB52 MB
Age rating12+17+
DeveloperCalculated Industries江西达伙网络科技有限公司

In-app purchases

None

Ultra Measure Master

No in-app purchases

None

Thor Lithium

No in-app purchases

Questions

Is Ultra Measure Master free?
Ultra Measure Master costs $29.99, with no in-app purchases.
Is Thor Lithium free?
Thor Lithium is free to download, with no in-app purchases.
Do Ultra Measure Master or Thor Lithium have ads?
Neither Ultra Measure Master nor Thor Lithium shows ads.
Which is updated more often, Ultra Measure Master or Thor Lithium?
Ultra Measure Master ships an update every 11 months, and Thor Lithium monthly. Most recently, Ultra Measure Master was updated on October 23, 2026 and Thor Lithium on October 28, 2026.

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