# CircKit — CEC Reference & Trade Tools > Electrical calculation and reference tools for professionals. (iPhone/iPad app by The Sparky.) - Source: https://appshunter.io/ios/app/circkit/id6612010334 (this page in markdown: same URL + `.md`) - Developer: [The Sparky](https://appshunter.io/developer/1747077864) - Category: Utilities, Reference - Price: Free with in-app purchases (on sale, was $9.99) - Age rating: 4+ - Requires: iOS 17.0 · 50 MB - Languages: English, French - Released: 2024-10-03 - Data updated: 2026-10-24 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/circkit/id6612010334/reviews.md ## What is CircKit? 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/ ## Key features - Motor sizing and protection calculators - Voltage drop calculator - Transformer sizing - Pipe and box fill calculators - Professional reference library - Integrated notes app - Unit converter ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | $5 Tip | $4.99 | one-time | | $20 Tip | $19.99 | one-time | | $1 Tip | $0.99 | one-time | | $10 Tip | $9.99 | one-time | ## Is CircKit safe? Not enough ratings yet to assess CircKit. ## Is CircKit legit? CircKit appears to be a legitimate app. The AppsHunter Legitimacy Score for CircKit is 85 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (10 of 13) All indexed reviews: https://appshunter.io/ios/app/circkit/id6612010334/reviews.md ### 3/5 — New update *2026-10-07* @devteam App is great however. The newest update has left the app broken and a blank black screen on the newest iPhones making it unusable ### 1/5 — Junk *2026-04-27* Calculator is haywire. Not user friendly. **Developer response:** Hey there, email us at software@thesparky.work so we can get whatever bugs you’re experiencing fixed! ### 5/5 — The only app around *2025-12-21* This app is perfect for any Canadian electrician looking to speed up their workday! Can’t say enough about the creator! Always looking for improvements and caring about customers. Made by an electrician, for electricians. **Developer response:** Really appreciate that Jordan, if there’s anything else you need or want in the app I’m always available! ### 5/5 — Great app *2025-11-27* For the CEC it can be hard to find decent apps and or websites that will refer to it but this app is such a fantastic tool to use **Developer response:** Thank you for the feedback. We’re glad you’re enjoying the app and appreciate your support! If you have any bugs or feature requests email us at software@thesparky.work ### 4/5 — Keyboard issues… *2025-10-01* Amazing app, been looking for something like this for some time. Only complaint so far is there is no keyboard hide button when using the transformer tool, so you can’t press the “next” button. This leaves you stuck at the first page of the transformer tool. **Developer response:** Thanks for the review Nick! We’ll have an update for that out ASAP and update our review response to let you know. Thanks for the bug report! EDIT: This bug should now be fixed! ### 5/5 — Super useful *2025-09-07* As an Australian electrician working in Canada this app has been super useful, easy reference for different items **Developer response:** Thanks for the kind words! If you have any suggestions or bugs feel free to reach out to us at info@thesparky.work ### 5/5 — Amazing Tool *2025-08-19* Adding this app to my daily routine is a game-changer! I would greatly appreciate a code of the day notification feature that allows for customization based on time settings. **Developer response:** That’s a fantastic idea! Thanks for the suggestion and thank you for the review! EDIT: Code of the day is now available! ### 5/5 — Every Sparky in Canada should own this!! *2025-07-24* This app has been a huge time saver. All of the features encompass most apps on here with way more to boast. The app is easy to use, isn't clunky or glitchy, and best of all is completely updated with the new CEC. Recommend to all! **Developer response:** Thanks for the kind words! Happy you’re enjoying the app. ### 4/5 — Language *2025-07-09* À quand l’appli en français???? **Developer response:** C’est en cours de développement pour une future mise à jour ! EDIT: L’application est maintenant disponible en français canadien! ### 5/5 — Use is weekly *2024-11-27* Very helpful app, always use it for quick calculations when on site. ## Frequently asked questions about CircKit ### What is Sparky's CircKit used for? Sparky's CircKit is an essential electrical app for professionals, offering instant results for motor sizing, voltage drop calculations, and more. It helps electricians, contractors, and engineers solve complex electrical problems quickly and stay code compliant. ### What kind of calculations does Sparky's CircKit offer? Sparky's CircKit includes advanced calculators for motor sizing and protection, transformer sizing, voltage drop with wire derating, and pipe/box fill. It also features an installation assistant and pot-light spacing tools. ### Does Sparky's CircKit have a reference library? Yes, Sparky's CircKit features a professional reference library with wire/pipe trade size tables, NEMA plug/receptacle configurations, enclosure ratings, data pinout references, and phase color codes. ### What productivity tools are included in Sparky's CircKit? Sparky's CircKit includes an integrated notes app, a calculator with fraction support, a unit converter across 14 categories, and a code-of-the-day feature with optional daily notifications. ### How much does Sparky's CircKit cost? Sparky's CircKit is a paid application, priced at $9.99. This one-time purchase provides access to all its professional calculation and reference tools. ### On what devices can I use Sparky's CircKit? Sparky's CircKit is available for iPhone and iPad. It is designed with an intuitive interface for immediate use by electrical professionals. ### How often is Sparky's CircKit updated? The latest version of Sparky's CircKit is 4.4, last updated on March 13, 2026. This indicates a commitment to regular updates and improvements for its users. ### Is Sparky's CircKit suitable for beginners? While designed for professionals, Sparky's CircKit features an intuitive interface that works immediately without extensive setup. Its organized tools aim to provide accurate, code-compliant results for every project. ## Version history (last 5 releases) ### 5.2.2 — 2026-10-15 - Tool Guides: 18 tools now have a how-to guide. It shows the first time you open a tool and comes back with the ? button. - Capacitor Sizing: the new trade calculator. You enter voltage and kvar, and it sizes the breaker, conductors, bond and raceway. - DIP Switch Address: the new Quick Reference tool, with the Simplex, Notifier/Potter, Hochiki, Silent Knight and Edwards presets. - Smarter Search: home search now finds trade calculators and Quick Reference tools, and matches trade terms like "kvar", "trench" or "RJ45". - Fixes: voltage drop now suggests 1/0 or larger for parallel runs, and Box Fill warns when fixture studs, wire nuts or devices are added before any conductors. - Performance and stability improvements ### 5.2 — 2026-10-04 - Tool Guides: 18 tools now have a how-to guide. It shows the first time you open a tool and comes back with the ? button. - Capacitor Sizing: the new trade calculator. You enter voltage and kvar, and it sizes the breaker, conductors, bond and raceway. - DIP Switch Address: the new Quick Reference tool, with the Simplex, Notifier/Potter, Hochiki, Silent Knight and Edwards presets. - Smarter Search: home search now finds trade calculators and Quick Reference tools, and matches trade terms like "kvar", "trench" or "RJ45". - Fixes: voltage drop now suggests 1/0 or larger for parallel runs, and Box Fill warns when fixture studs, wire nuts or devices are added before any conductors. - Performance and stability improvements ### 5.1.1 — 2026-09-27 This update contains bug fixes and performance improvements. ### 5.1 — 2026-09-24 Sparky's CircKit is now free to download, with a 14-day free trial. After the trial you can keep going with a monthly or yearly subscription, or continue to buy it once and own it for life. Already own Sparky's CircKit? Nothing changes. Every tool stays unlocked for good — no subscription, nothing to buy and nothing to restore. ### 5.0.3 — 2026-09-18 Our biggest update yet! Sparky’s CircKit now supports landscape mode and resizable windows, along with: • Ask Sparky, your new AI electrical assistant • Siri integration on Apple Intelligence–compatible devices • 75 new Canadian Electrical Code references • New Arc Flash and PVC Expansion calculators • Redesigned Fraction and Ohm’s Law calculators • Spotlight support for quickly finding tools • Easier result sharing • Google Maps and Waze navigation options for Jobs • Performance and stability improvements throughout the app ## Apps similar to CircKit | App | Rating | Price | Category | | --- | --- | --- | --- | | [E-Calc Master 2024](https://appshunter.io/ios/app/e-calc-master-2024/id6739976962) | — | $14.99 | Utilities | | [E-Calc Journeyman 2021](https://appshunter.io/ios/app/e-calc-journeyman-2021/id1506844490) | 5.0 (2) | $6.99 | Utilities | | [Canada Electricians Calculator](https://appshunter.io/ios/app/canada-electricians-calculator/id6760246552) | — | Free | Utilities | | [E-Calc Master 2021](https://appshunter.io/ios/app/e-calc-master-2021/id1538269385) | 3.0 (2) | $13.99 | Utilities | | [E-Calc Journeyman 2024](https://appshunter.io/ios/app/e-calc-journeyman-2024/id6740699162) | — | $6.99 | Utilities | | [Conduit Bender Elite - Calc](https://appshunter.io/ios/app/conduit-bender-elite-calc/id580768337) | 4.8 (1,716) | $8.99 | Utilities | ## More apps by The Sparky - [Pipe Fill Calculator - Canada](https://appshunter.io/ios/app/pipe-fill-calculator-canada/id6502868718) - [QuikFraction](https://appshunter.io/ios/app/quikfraction/id6736413508) - [Lumen Layout](https://appshunter.io/ios/app/lumen-layout/id6739475851) - [SpiceRack](https://appshunter.io/ios/app/spicerack/id6739817552) - [QuikQuote](https://appshunter.io/ios/app/quikquote/id6743935176) All apps by The Sparky: https://appshunter.io/developer/1747077864 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-24.*