Comparison

Unit Converter and Calc vs Span64 Construction Calculator

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

Head to head
About

Unit Converter and Calc

This app offers a comprehensive suite of conversion tools for everyday needs, including units of length, weight, temperature, and currency. It also functions as a scientific and arithmetic calculator, with specialized calculators for age, EMI, BMI, and more.

Highlights
  • Unit conversion for length, weight, temperature, volume, time
  • Scientific and arithmetic calculator
  • Real-time currency and cryptocurrency converter
  • Age, EMI, BMI, Percentage, GST calculators
  • History display for previous calculations
  • Floating calculator for multitasking
Features
Read full description

Quick, easy, free unit calculator for your daily operations. This Unit Converter and Calc converts between common units of length, area, temperature, volume, weight, time, and many more. Super Unit Calculator is an easy-to-use calculator for your day-to-day needs with the ability to convert most of the units according to your needs. With this stupendous calculator converting any unit is very easy. You just need to select the unit and enter the value. Key Features of this all-in-one Unit Calculator: • Scientific/Arithmetic Calculator: Best Simple Calculator supports the basic arithmetic operation such as addition, subtraction, multiplication, and division • Unit Converter: Simple, smart and elegant tool for easy conversion of length, area, weight, temperature, currency, time, volume, speed, distance and much more Powerful calculator for converting all the currencies and measures • Currency Converter: Real-time live currency converter and calculator for converting a value from one currency to another • Age Calculator: Just enter your accurate date of birth to calculate your exact age. Also, count the number of days between two dates. • EMI Calculator: By calculating your EMI and viewing your payment schedule, you can efficiently plan your loan repayment. • Crypto Currency Converter: Real-time Cryptocurrency Converter helps you convert all Cryptocurrencies like Bitcoin, DOGE, ETH to your desired Currencies like USD, EUR, and many more. • SIP Calculator: Plan your SIP investments by calculating the future value of SIP Payments. Using a projected annual return rate, estimate the maturity amount of any monthly SIP. • BMI Calculator: Calculate your body mass index and determine your body status based on your height and weight. • Percentage Calculator: Make your calculation more faster by counting Simple Percentage, as well as Result, Discount, Tip and Profit Margin Percentage in one click. • GST Calculator: By choosing amount of GST rate, quickly calculate GST on sales or purchase of goods or services. • Switch modes by Swipe: Simply switch the modes by swiping between Standard mode and Scientific mode • Trigonometric functions: Perform scientific operations like trigonometric, logarithmic, and exponential functions • History display: Want to see previous calculations? History display provides you functionality by which you can watch previous calculations • Floating calculator: Your go-to calculator for quick algebraic operations. This calculator stay in front of all the running applications so you can interact with any content behind it • Combination of operators: Allows you to combine many operators in one expression. Simply solve any complicated equations in no time • Easy edit: If you want to change or add any operators/numbers, you can easily edit any functions in between the formula

About

Span64 Construction Calculator

Features
Read full description

Exact trade math. Offline. Yours once. Span64 is an exact feet-inch-fraction Calculator for carpenters, framers, contractors, and serious DIYers. Enter full equations, read stacked fractions clearly, convert between imperial and metric, and keep completed work on a persistent Tape. THE CALCULATOR IS FREE The Calculator is free. Jobsite Tools require a one-time unlock. Add, subtract, multiply, and divide dimensions without ads. Calculator equations and results stay available on your Tape so you can reuse or share them later. SPAN64 PRO: SEVEN JOBSITE TOOLS • Triangle / Right-angle • Area & Volume • Concrete • Board Feet • Stairs • Roof / Rafter, including common-rafter birdsmouth • Studs / On-center Preview every locked Tool with your own measurements before purchasing. A single non-consumable purchase reveals useful numeric results and unlocks all seven Tools forever. There is no subscription, trial countdown, or account. BUILT FOR REAL WORK • Exact domain math to 1/64 inch • Tolerant feet-inch input • Imperial and metric output where applicable • Persistent Tape with notes and reuse • Clear stair checks and focused jobsite forms • Works without a signal after installation Purchasing or restoring Span64 Pro requires a network connection so the App Store can verify ownership. Restore Purchases is available from Settings and the Span64 Pro screen. Your measurements, equations, results, Tape entries, and notes stay on your device. Choose whether to share optional PostHog usage analytics and Sentry crash diagnostics after your first saved calculation. Both stay off unless you accept. You can change your choice in Settings. Telemetry uses a pseudonymous installation ID and never includes calculation content. Turning sharing off discards pending telemetry; see our Privacy Policy for data already sent and deletion requests. Span64 is a calculation aid. Verify measurements, structural decisions, and local code requirements before cutting or building.

Screenshots

Unit Converter and Calc4 screens
Span64 Construction Calculator4 screens

Verdict

The call

The clearest difference is in-app purchases: Unit Converter and Calc at none against Span64 Construction Calculator's 1. Unit Converter and Calc also leads on iOS requirement (15.6 vs 18.0). Span64 Construction Calculator's advantage is ads (none vs shown) and update cadence (weekly vs every 2 months). On price 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

Both are free to download. Span64 Construction Calculator sells 1 one-off in-app purchase. Unit Converter and Calc asks for nothing beyond the download.

UpkeepUpdate frequency

Unit Converter and Calc ships an update every 2 months, Span64 Construction Calculator weekly. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 6 level
Unit Converter and Calc versus Span64 Construction Calculator: the parameters behind the verdict, then further details
ParameterUnit Converter and CalcSpan64 Construction Calculator
PriceFreeFree
Rating4.8 (4 ratings) — better—
Positive reviews80.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 2 monthsWeekly — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.6 — better18.0
Further details — not scored
Size31 MB30 MB
Age rating4+4+
DeveloperQtonz infosoft private limitedRoberto Garrido

In-app purchases

None

Unit Converter and Calc

No in-app purchases

1 purchases

Span64 Construction Calculator

One-time1
  • Span64 Pro$19.99

Questions

Is Unit Converter and Calc free?
Unit Converter and Calc is free to download, with no in-app purchases.
Is Span64 Construction Calculator free?
Span64 Construction Calculator is free to download, with in-app purchases available.
Do Unit Converter and Calc or Span64 Construction Calculator have ads?
Unit Converter and Calc shows ads; Span64 Construction Calculator does not.
Which is updated more often, Unit Converter and Calc or Span64 Construction Calculator?
Unit Converter and Calc ships an update every 2 months, and Span64 Construction Calculator weekly. Most recently, Unit Converter and Calc was updated on November 6, 2026 and Span64 Construction Calculator on November 5, 2026.

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