Comparison

DataCentral vs Transformer Calculation Tool

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

Head to head
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.

About

Transformer Calculation Tool

Features
Read full description

Easy Transformer Calculator is a practical and accurate tool designed for electricians, engineers, technicians, and students. Perform transformer calculations instantly with a clean and easy-to-use interface. Whether you're working with electrical systems, power distribution, or learning transformer theory, this app helps simplify complex calculations and improve accuracy. Key Features: • Transformer voltage and current calculations • Turns ratio and power estimation • Supports electrical engineering formulas • Fast, accurate, and easy-to-use interface • Ideal for students, electricians, and professionals • Useful for industrial and educational applications Save time, reduce calculation errors, and simplify transformer analysis with Easy Transformer Calculator. in-app purchase included Lifetime to Remove Ads Privacy Policy : https://docs.google.com/document/d/1A79qPsEUJu1rXjqsSUct_IBBAewiuBK5b8Dz-SPD0CY/edit?usp=sharing Terms & Condition : https://docs.google.com/document/d/1_yiolHxlRnOnEZk_sgPThQ0hggtlZAKCM6NvqDOE8Gs/edit?usp=sharing

Screenshots

DataCentral4 screens
Transformer Calculation Tool4 screens

Verdict

The call

The clearest difference is update cadence: DataCentral at every 3 days against Transformer Calculation Tool's every 4 weeks. Transformer Calculation Tool's advantage is iOS requirement (13.0 vs 17.6). On price, 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

Both are free to download. DataCentral sells 2 in-app purchases, starting at $9.99 per month and Transformer Calculation Tool sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

DataCentral ships an update every 3 days, Transformer Calculation Tool every 4 weeks. The most recent releases landed on September 20, 2026 and September 16, 2026 respectively.

Scorecard2 real differences · 8 level
DataCentral versus Transformer Calculation Tool: the parameters behind the verdict, then further details
ParameterDataCentralTransformer Calculation Tool
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 days — betterEvery 4 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.613.0 — better
Further details — not scored
Size32 MB57 MB
Age rating4+4+
DeveloperStephen MooreShraddhaben Parmar

In-app purchases

2 purchases

DataCentral

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

Transformer Calculation Tool

One-time1
  • Lifetime premium$9.99

Questions

Is DataCentral free?
DataCentral is free to download, with in-app purchases available.
Is Transformer Calculation Tool free?
Transformer Calculation Tool is free to download, with in-app purchases available.
Do DataCentral or Transformer Calculation Tool have ads?
Neither DataCentral nor Transformer Calculation Tool shows ads.
Which is updated more often, DataCentral or Transformer Calculation Tool?
DataCentral ships an update every 3 days, and Transformer Calculation Tool every 4 weeks. Most recently, DataCentral was updated on September 20, 2026 and Transformer Calculation Tool on September 16, 2026.

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