Comparison

Unit Converter and Calc vs DataCentral

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

DataCentral

Monitor your servers, sensors, and infrastructure in real-time from your iPhone. Receive instant alerts for temperature, uptime, and power status changes. Ideal for home labs, small businesses, and colocation racks to prevent downtime.

Highlights
  • Real-time sensor readings
  • Customizable push notifications
  • Uptime and power status monitoring
  • Historical data and trend analysis
  • Modern interface for quick glances
Features
Read full description

DataCentral is the app for watching the US AI data center race — from Stargate-scale campuses and xAI's Colossus to the grid strain the buildout is creating. We don't pretend other companies' sites are live. Follow the buildout (free) - Buildout Pulse — sourced stories of announcements, milestones, and grid news, each with a source and an as-of date. - The Race — leaderboards ranking builders, states, and campuses by announced gigawatts. First open sets an overnight baseline rather than inventing climbers. Share a leaderboard card in a tap. - Grid — a three-state teaser ranked by the registry model, labeled "not live EIA," with MW announced and AI announced. Pro unlocks live EIA ranking. - Catalog — nationwide facilities with announced MW. Online and Building are registry status, not live health. - Your State — pick a state for its EIA residential electricity rate (labelled with the month published) shown beside announced facility MW and public proceedings. The app does not attribute rate changes to data centers. - Home Screen widgets — tracked announced capacity and the latest headline, updated in the background from a local snapshot. - One custom site to track your own facility manually. DataCentral Pro - Live facility telemetry — connect your own sites via HTTPS you supply and stream live power, utilization, and status on a real poll cadence. - Live EIA ranking — full state grid ranking from EIA-930, not the free registry teaser. - Assistant — ask about your watches, Race ranks, Grid, and Time to Power. Answers are grounded in data already in the app. - Unlimited custom data centers, with status/grid alerts and a "My Site" widget. - Energy cost modeling with customizable $/kWh. - Predictive insights and infrastructure alerts. - Annual plan includes a 7-day free trial. Honest data labeling - Cover copy states we don't pretend other companies' sites are live. - Pulse cards carry a source and an as-of date (for example "Updated Aug 27, 2026"). - Race ranks announced GW. Overnight Moves starts as a baseline on first open. - Free Grid is the registry model, labeled not live EIA. Rows read MW announced / AI announced. - Catalog MW is Announced. Online / Building are registry status, not live health. - Connected sites you instrument are badged LIVE with a last-updated timestamp. - Live telemetry requires a metrics endpoint you control (or a gateway you deploy). Who it's for - Investors and analysts tracking the US AI infrastructure buildout. - Enthusiasts following Stargate, Colossus, and the gigawatt race. - Infrastructure engineers and operators monitoring their own facilities. Subscription required for live connections, live EIA ranking, Assistant, and other Pro features. The Race, Pulse, registry Grid teaser, nationwide catalog, and manual custom sites remain available without a subscription.

Screenshots

Unit Converter and Calc4 screens
DataCentral4 screens

Verdict

The call

The clearest difference is in-app purchases: Unit Converter and Calc at none against DataCentral's 2. Unit Converter and Calc also leads on iOS requirement (15.6 vs 17.6). DataCentral's advantage is ads (none vs shown) and update cadence (every 3 days vs every 2 months). On price, ratings volume 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. DataCentral sells 2 in-app purchases, starting at $9.99 per month. Unit Converter and Calc asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

DataCentral holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews point the same way: 80% of Unit Converter and Calc's written reviews are positive against 100% of DataCentral's.

UpkeepUpdate frequency

Unit Converter and Calc ships an update every 2 months, DataCentral every 3 days. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.

Scorecard7 real differences · 3 level
Unit Converter and Calc versus DataCentral: the parameters behind the verdict, then further details
ParameterUnit Converter and CalcDataCentral
PriceFreeFree
Rating4.8 (4 ratings)5.0 (2 ratings) — better
Positive reviews80.0% of reviews100.0% of reviews — better
Number of ratings4 — better2
Update frequencyEvery 2 monthsEvery 3 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFreemium
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.6 — better17.6
Further details — not scored
Size31 MB34 MB
Age rating4+4+
DeveloperQtonz infosoft private limitedStephen Moore

Customer experience

Unit Converter and Calc

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

DataCentral

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Unit Converter and Calc

No in-app purchases

2 purchases

DataCentral

Subscriptions2
  • DataCentral Pro Monthly$9.991 Month
  • DataCentral Pro Annual$89.991 Year

Questions

Is Unit Converter and Calc free?
Unit Converter and Calc is free to download, with no in-app purchases.
Is DataCentral free?
DataCentral is free to download, with in-app purchases available.
Which has better reviews, Unit Converter and Calc or DataCentral?
DataCentral is rated higher. Unit Converter and Calc averages 4.8 out of 5 from 4 ratings, while DataCentral averages 5.0 from 2 ratings.
Do Unit Converter and Calc or DataCentral have ads?
Unit Converter and Calc shows ads; DataCentral does not.
Which is updated more often, Unit Converter and Calc or DataCentral?
Unit Converter and Calc ships an update every 2 months, and DataCentral every 3 days. Most recently, Unit Converter and Calc was updated on October 1, 2026 and DataCentral on October 7, 2026.

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