Construction Calc vs Sparky's CircKit
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Construction Calc
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Designed by tradespeople, for tradespeople. Construction Calc Lite handles the heavy lifting of jobsite mathβfractions, dimensional conversions, framing, and layoutβso you can focus on the build. Whether you're a carpenter, concrete finisher, framer, superintendent, or DIYer, Construction Calc Lite delivers fast, accurate jobsite calculations with zero guesswork. WHY TRADES CHOOSE CONSTRUCTION CALC β’ True Feet-Inch-Fraction Math: Add, subtract, multiply, and divide in full dimensional fractions down to 1/16th (or user-set precision) with automatic reduction. β’ Seamless Unit Switching: Effortlessly mix Imperial and Metric. Convert feet-inch-fractions to meters, centimeters, or millimeters in a single tap. β’ Split-Screen Display: View decimal values, feet/inch fractions, memory registers, and scale factors simultaneously in large, high-visibility text. β’ Visual Cut & Layout Solvers: Dedicated modules for right triangles, miters, arcs, and baluster spacing complete with clear visual diagrams. β’ 50 Memory Registers & Full History: Never lose a cut list or measurement. Easily recall previous calculations on the fly. DEDICATED MODULES FOR EVERY TRADE β’ Framing & Layout: Calculate stud, fence post, and baluster spacing (horizontal, angled, or circular). β’ Miters & Trim: Visual miter and bevel angle calculator for crown molding and finish carpentry. β’ Geometry & Stairs: Instant solutions for right triangles, diagonals, rafter lengths, arcs, and chords. β’ Concrete, Volume & Area: Quickly calculate slab volume, footings, room square footage, and block/tank capacities. β’ Materials & Coverage: Estimate drywall sheets, tile, paint, and material costs with built-in waste allowances. β’ Smart Blueprint Scaling: Instantly scale plan drawings up or down to true field dimensions. BUILT FOR THE JOBSITE β’ High-Contrast Display: Large, legible fonts engineered for bright outdoor sunlight or dark crawl spaces. β’ Works 100% Offline: No cell service required on remote sites.
Sparky's CircKit
This app provides essential electrical calculations and reference tools for electricians, contractors, and engineers. It offers advanced calculators for motor sizing, voltage drop, and more, alongside a professional reference library and built-in productivity tools.
- Motor sizing and protection calculators
- Voltage drop calculator
- Transformer sizing
- Pipe and box fill calculators
- Professional reference library
- Integrated notes app
- Unit converter
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The essential electrical app for professionals. From motor sizing to voltage drop calculations, get instant results with tools designed for electricians, contractors, and engineers. Solve complex electrical problems quickly and stay compliant with the Canadian Electrical Code. AI-POWERED ASSISTANCE β’ Ask Sparky, your new AI electrical assistant, for help with electrical questions β’ Access Sparky through Siri on Apple Intelligence-compatible devices β’ Get quick answers even when you're outside the app ADVANCED CALCULATIONS β’ Motor sizing and protection calculators β’ Transformer sizing with protection specifications β’ Voltage drop calculations with wire derating β’ Conduit and box fill calculators β’ Arc flash incident energy calculator β’ PVC conduit expansion calculator β’ Redesigned and simplified Ohm's Law calculator β’ Installation assistant for project guidance β’ Recessed-light spacing for optimal layouts PROFESSIONAL REFERENCE LIBRARY β’ Expanded Canadian Electrical Code reference library with 75 new code entries β’ Wire and conduit trade-size tables with drill sizes and metric equivalents β’ NEMA plug and receptacle configurations and enclosure ratings β’ Data pinout references and phase colour codes β’ Bonding sizes, burial depths, and strap spacing β’ Torque specifications and wire reel estimator BUILT-IN PRODUCTIVITY TOOLS β’ Integrated notes accessible anywhere in the app β’ Completely rebuilt fraction calculator with a new tutorial β’ Unit converter spanning 14 categories β’ Code of the Day with optional daily notifications β’ Find tools from your Home Screen or Lock Screen with Spotlight β’ Share results without first saving them as notes β’ Navigate to jobs using Apple Maps, Google Maps, or Waze DESIGNED FOR PROFESSIONALS Enjoy a clean, intuitive interface that now supports landscape mode and resizable windows. Sparky's CircKit delivers organized tools electrical professionals can rely on for accurate, code-compliant results. Whether you're running conduit, sizing equipment, or planning an installation, Sparky's CircKit provides the calculations and reference data you need to work efficiently and safely. FREE TRIAL, THEN YOUR CHOICE Start with a 14-day free trial that unlocks every tool. The trial is free, never renews and is never charged. When it ends, choose the plan that suits you: β’ Monthly β $1.99 per month β’ Yearly β $14.99 per year β’ Lifetime β $39.99, a one-time purchase with no subscription Prices are in Canadian dollars and shown in your local currency elsewhere. Yearly subscribers can upgrade to lifetime access at a reduced price. ALREADY OWN SPARKY'S CIRCKIT? Nothing changes. If you bought the app before it became free to download, every tool stays unlocked for life. There is nothing to subscribe to and nothing to buy. SUBSCRIPTION TERMS Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renewal is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the end of the current period. You can manage your subscription and turn off auto-renewal in your Apple Account settings after purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.thesparky.work/privacy/
Screenshots
Verdict
The clearest difference is price: Sparky's CircKit at Free against Construction Calc's $7.99. Sparky's CircKit also leads on iOS requirement (17.0 vs 26.0). Construction Calc's advantage is in-app purchases (none vs 4). On update cadence, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Sparky's CircKit is free to download; Construction Calc costs $7.99 up front. Sparky's CircKit sells 4 one-off in-app purchases. Construction Calc asks for nothing beyond the download.
Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 5, 2026 and October 9, 2026 respectively.
| Parameter | Construction Calc | Sparky's CircKit |
|---|---|---|
| Price | $7.99 | Free β better |
| Positive reviews | β | 84.6% of reviews |
| Update frequency | Weekly | Weekly |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Monetization | β | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 | 17.0 β better |
| Further details β not scored | ||
| Size | 27 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | Snappy Appz Inc. | The Sparky |
In-app purchases
Construction Calc
No in-app purchases
Sparky's CircKit
- $1 Tip$0.99
- $5 Tip$4.99
- $10 Tip$9.99
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- $20 Tip$19.99
Questions
Is Construction Calc free?
Is Sparky's CircKit free?
Do Construction Calc or Sparky's CircKit have ads?
Which is updated more often, Construction Calc or Sparky's CircKit?
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