Comparison

CircKit vs E

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

Head to head
About

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.

Highlights
  • Motor sizing and protection calculators
  • Voltage drop calculator
  • Transformer sizing
  • Pipe and box fill calculators
  • Professional reference library
  • Integrated notes app
  • Unit converter
Features
Read full description

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/

About

E

This app provides electricians and engineers with precise calculations based on the 2024 Canadian Electrical Code. It offers advanced tools for wire sizing, conduit fill, motor loads, and voltage drop, streamlining complex electrical work in the field or office.

Highlights
  • Code-compliant wire sizing
  • Conduit fill calculations
  • Motor and transformer tools
  • Voltage drop analysis
  • Residential service sizing
  • Panel legend creation
  • Integrated unit converter
Features
Read full description

E-Calc Master 2024: The Ultimate CEC Companion Stop flipping through code books and start calculating with precision. E-Calc Master 2024 is the definitive electrical resource for professionals who demand more than just simple formulas. Designed specifically for electricians, engineers, and contractors, this app provides instant, accurate results based on the 2024 Canadian Electrical Code (CEC). While other apps stop at basic math, E-Calc Master 2024 handles the heavy liftingβ€”delivering code-compliant wire sizing, conduit capacities, fusing, and bonding requirements in seconds. Professional Features for the Field Advanced Motor & Transformer Tools Motor Loads: Get instant results for maximum overcurrent, overload protection, minimum wire size, conduit size, and bond wire requirements. Transformers: Calculate FLA, pipe size, fuse/breaker ratings, and bond sizing for both primary and secondary systems. Precision Wire & Conduit Sizing Ampacity & Derating: Calculate allowable ampacity for any wire type or complex derating scenario. Conduit Fill: Quickly find the maximum number of similar-sized wires for any given pipe. Expansion & Spacing: Calculate linear expansion for conduits and required strap spacing. Complex Calculations Made Simple Voltage Drop: Solve complicated runs easily. Get results for percentage drop, maximum run lengths, and wire sizing, with full support for derating. Residential Services: Calculate single-dwelling service sizes with confidence. Box Fill: Accurate calculations in both mL and cubic inches. Burial Depths: Determine minimum requirements for any environment, including under-slab, rock-encased, or mechanically protected runs. On-Site Utilities & Reference Panel Legends: Create custom, professional panel legends and print them directly to scale. Torque Settings: Access recommended torque settings for a wide variety of lugs and terminations. Visual Guides: High-quality diagrams for service masts, kitchen wiring, and communication cabling. NEMA Reference: Quickly find NEMA codes and receptacle specifications. Built for Your Workflow Save & Share: Every calculation is saved and can be printed or shared with your team or inspectors. Universal Access: Buy once and run E-Calc Master on your iPhone, iPad, and Mac. Integrated Tools: Includes a comprehensive unit converter, Ohm’s Law calculator, and voltage unbalance tool. Whether you are in the office designing a system or on-site during an inspection, E-Calc Master 2024 ensures you have the power of the Canadian Electrical Code right in your pocket. Download E-Calc Master 2024 today and work smarter.

Screenshots

CircKit4 screens
E4 screens

Verdict

The call

The clearest difference is price: CircKit at Free against E's $14.99. CircKit also leads on iOS requirement (17.0 vs 26.0). E's advantage is in-app purchases (none vs 4). On review sentiment, update cadence, ads and monetization model 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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

CircKit is free to download; E costs $14.99 up front. CircKit sells 4 one-off in-app purchases. E asks for nothing beyond the download.

UpkeepUpdate frequency

CircKit ships an update weekly, E fortnightly. Both last shipped on October 24, 2026.

Scorecard3 real differences Β· 5 level
CircKit versus E: the parameters behind the verdict, then further details
ParameterCircKitE
PriceFree β€” better$14.99
Positive reviews84.6% of reviews β€” better83.3% of reviews
Update frequencyWeekly β€” betterFortnightly
AdsNoNo
In-app purchasesYesNo β€” better
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 β€” better26.0
Further details β€” not scored
Size50 MB55 MB
Age rating4+4+
DeveloperThe SparkySnappy Appz Inc.

Customer experience

CircKit

Written reviews13 reviews
Positive84.6%
Neutral7.7%
Negative7.7%

E

Written reviews6 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

In-app purchases

4 purchases

CircKit

One-time4
  • $1 Tip$0.99
  • $5 Tip$4.99
  • $10 Tip$9.99
Show 1 more
  • $20 Tip$19.99
None

E

No in-app purchases

Questions

Is CircKit free?
CircKit is free to download, with in-app purchases available.
Is E free?
E costs $14.99, with no in-app purchases.
Do CircKit or E have ads?
Neither CircKit nor E shows ads.
Which is updated more often, CircKit or E?
CircKit ships an update weekly, and E fortnightly. Most recently, CircKit was updated on October 24, 2026 and E on October 24, 2026.

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