E vs CircKit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
E
This app provides comprehensive electrical calculations based on the Canadian Electric Code. It assists electricians and engineers with tasks like wire and conduit sizing, fusing, and load calculations, offering detailed results and saving them for sharing or printing.
- Canadian Electric Code calculations
- Wire and conduit sizing
- Fusing and overload calculations
- Motor and transformer load calculations
- Custom panel legends
- Voltage drop calculations
- Box fill calculations
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E-Calc Master is an electrical application for calculating many common electrical problems. This app is an essential tool for all electricians and electrical engineers. Unlike other similar apps E-Calc not only calculates simple formulas but returns code results including wire sizing, conduit sizing, fusing, overload size, ground and bond size and much more based on the Canadian Electric Code. The features of this app are too long to list but here are a few of the key ones; - All calculations are saved and can be shared or printed. - Universal app runs on iPhone and iPad. - Calculate any motor load and get maximum overcurrent, maximum overload, minimum wire, minimum pipe, and minimum bond wire size. - Calculate transformer size and get FLA, pipe size, fuse and breaker size, bond size, on both primary and secondary. - Create custom panel legends and print to scale. - Calculate the allowable ampacity of any wire type and deration situation. - Calculate maximum number of similar sized wires in a given pipe size. - Calculate required bonding sizes. - Easily calculate complicated voltage drop calculations. Get results for percentage voltage drop as well as maximum lengths of runs and wire size. Derating is also supported. - Calculate minimum burial depths for any situation including special situations including mechanical protection, under slab, and rock encased. - Calculate any box fill situation in mL and cubic inch. - Calculate recommeneded torque settings for all varieties of lugs and terminations. - Convert many common units with the built in conversion calculator. - Includes handy diagrams for service masts, kitchen wiring and communication cabling. - Calculate linear expansion of conduits. - Ohm's law calculator. - Strap spacing calculator. - Voltage unbalance calculator. - Find NEMA codes and specs of receptacles. - Calculate residential single dwelling service sizes.
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 • Ask Sparky, your new AI electrical assistant, for help with electrical questions • Access Sparky through Siri on Apple Intelligence-compatible devices • Get quick answers even when you're outside the app ADVANCED CALCULATIONS • Motor sizing and protection calculators • Transformer sizing with protection specifications • Voltage drop calculations with wire derating • Conduit and box fill calculators • Arc flash incident energy calculator • PVC conduit expansion calculator • Redesigned and simplified Ohm's Law calculator • Installation assistant for project guidance • Recessed-light spacing for optimal layouts PROFESSIONAL REFERENCE LIBRARY • Expanded Canadian Electrical Code reference library with 75 new code entries • Wire and conduit trade-size tables with drill sizes and metric equivalents • NEMA plug and receptacle configurations and enclosure ratings • Data pinout references and phase colour codes • Bonding sizes, burial depths, and strap spacing • Torque specifications and wire reel estimator BUILT-IN PRODUCTIVITY TOOLS • Integrated notes accessible anywhere in the app • Completely rebuilt fraction calculator with a new tutorial • Unit converter spanning 14 categories • Code of the Day with optional daily notifications • Find tools from your Home Screen or Lock Screen with Spotlight • Share results without first saving them as notes • 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: • Monthly — $1.99 per month • Yearly — $14.99 per year • Lifetime — $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: CircKit at Free against E's $13.99. CircKit also leads on update cadence (weekly vs every 5 weeks). E's advantage is in-app purchases (none vs 9) and review sentiment (100% vs 79%). On ads, monetization model, device support and iOS requirement 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
CircKit is free to download; E costs $13.99 up front. CircKit sells 9 in-app purchases, starting at $1.99 per month. E asks for nothing beyond the download.
E ships an update every 5 weeks, CircKit weekly. The most recent releases landed on October 8, 2026 and October 25, 2026 respectively.
| Parameter | E | CircKit |
|---|---|---|
| Price | $13.99 | Free — better |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews — better | 78.6% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 37 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | Snappy Appz Inc. | The Sparky |
Customer experience
E
CircKit
In-app purchases
E
No in-app purchases
CircKit
- Monthly$1.991 Month
- Yearly$14.991 Year
- 14 Day TrialFree
- $1 Tip$0.99
- $5 Tip$4.99
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- $10 Tip$9.99
- $20 Tip$19.99
- Discounted Lifetime$22.99
- Lifetime Access$39.99









