# Electric Toolkit - Calculator — Electrical Wiring Diagrams > Electrical wiring diagrams and calculators for home projects. (iPhone/iPad app by Cyberprodigy LLC.) - Source: https://appshunter.io/ios/app/electric-toolkit-calculator/id516862639 (this page in markdown: same URL + `.md`) - Developer: [Cyberprodigy LLC](https://appshunter.io/developer/510284906) - Category: Utilities, Productivity - Price: $5.99 - Rating: 4.80/5 from 288 App Store ratings · 31 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 25 MB - Languages: American English - Released: 2012-04-11 - Data updated: 2026-08-19 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/electric-toolkit-calculator/id516862639/reviews.md ## What is Electric Toolkit? Electric Toolkit is an easy to use collection of electrical wiring diagrams, pinouts, and electrical calculators for home wiring projects. The Electric Toolkit includes: *Seven different 3-way switch wiring diagrams *Seven different Ceiling Fan wiring diagrams *Basic light switch wiring diagrams *4-way switching wiring diagrams *Exhaust/bathroom fan wiring diagrams *Multiple GFCI wiring diagrams *Wall outlet wiring diagram *Grounding conductor size calculator  (NEC 2014 through NEC 2023, Table 250-122) *Ohms Law calculator *Sizing a Circuit Breaker calculator  (NEC 2023, NEC 2020, NEC 2017, and NEC 2014, 240-6(a)) *Voltage drop calculator *AWG to mm/mm² calculator *Audio/Video Cable pinouts ( Component, DisplayPort, DVI, Ethernet, Firewire, HDMI/Mini HDMI/Micro HDMI, Lightning, LPT(parallel port), PS/2, RCA, Serial port, S-video, USB 3.0/Mini USB/Micro USB/USB-C, and VGA). If you have any suggestions, find bugs, or have any requests, feel free to email them to: techsupport@cyberprodigy.com ## Key features - 3-way switch wiring diagrams - Ceiling fan wiring diagrams - GFCI wiring diagrams - Grounding conductor size calculator - Ohms Law calculator - Circuit breaker sizing calculator - Voltage drop calculator - Audio/Video cable pinouts ## Chart rankings - #181 in Top Paid · Utilities (US App Store) ## Recent user reviews (10 of 31) All indexed reviews: https://appshunter.io/ios/app/electric-toolkit-calculator/id516862639/reviews.md ### 5/5 — Need more examples *2023-09-13* Really liked schematics…would like to see much more…much much more ### 5/5 — Excellent App *2022-09-05* I have been using this app literally for years! It is super user friendly, diagrams are excellent and very easy to understand, and all of the pin connections etc for making up your own cables are excellent and easy to read. I highly recommend this app to anyone, whether you are an electrician or diy'er! Money well spent for sure! ### 1/5 — very simple diagrams *2021-07-03* bought this thinking there was a lot of complicated options, but it only provides extremely basic wiring that you can find on the internet **Developer response:** We believe the description to be accurate as to which wiring diagrams are included. If there are additional diagrams you would like to see included please provide feedback to techsupport@cyberprodigy.com and we'd be happy to look at adding those in a future update. ### 1/5 — The Voltage drop Calculator *2020-06-30, version 1.3.4* This quit working after this app update today on 6/30/2020 ### 4/5 — Good but needs more *2020-05-31* Nice to have it all in one place (an app) but it’s nothing that cannot be easily found online. Nice layout and easy to use but needs more diagrams or perhaps a way to pick what your installing and the app automatically lay out the wiring for you. For example, how is a 3 way stitch wired with 3 or more lights with power first to the lights. Or how about a 4 way with the same setup! ### 5/5 — Just what I needed *2019-05-10* Wiring diagrams are excellent. App is well worth the money. Voltage drop calc was very helpful in figuring out the correct size wire for welder outlet in my garage. ### 1/5 — Poor app *2015-09-16* All on google just search this app not worth the price. ### 1/5 — Not enough info, too lame *2015-03-12* I think this developer is trying to make money without going through developing a good app. He just cut and paste few light circuit images and asking 5.99 for it. As of the app it is worth maybe 99 cents. Hey developer add more info about house wiring, how about all the other electrical wiring info in residential houses? My suggestion to anyone who wants to buy this app is don't. unless of course the developer adds more info. Much much more info into the app for the app to be worth 5.99. I am sorry for myself wasting my time even writing this review. I felt like I am robbed, literally. If the dev update the app with more stuff then I can come back with a follow up review. ### 3/5 — Non UK only *2015-03-08* These diagrams are not correct for the UK. No facility to create a wiring diagram It serves a purpose in USA but in the UK, if you are able to interpret the difference, then you are too qualified to actually need these drawings anyway. ### 4/5 — Great Reference App *2015-03-01* Great for handyman to have this information handy in your pocket! Will buy other Apps from this company. ## Frequently asked questions about Electric Toolkit ### What does the Electric Toolkit app do? The Electric Toolkit app offers a collection of electrical wiring diagrams and calculators designed for home wiring projects. It includes various diagrams for switches, fans, and outlets, along with calculators for grounding, circuit breakers, voltage drop, and Ohms Law. ### What types of wiring diagrams are included? The app features diagrams for seven different 3-way switch configurations, seven ceiling fan wiring setups, basic light switches, 4-way switching, exhaust/bathroom fans, multiple GFCI setups, and wall outlets. It also includes pinouts for various audio/video cables. ### What electrical calculators are available? It includes calculators for grounding conductor size (NEC 2014-2023), Ohms Law, circuit breaker sizing (NEC 2014-2023), voltage drop, and AWG to mm/mm². These calculators adhere to relevant National Electrical Code (NEC) standards. ### Is this app free to use? Yes, based on the provided information, the Electric Toolkit app is free to use and does not have in-app purchases or advertisements. ### Who would benefit from using this app? This app is beneficial for homeowners, DIY enthusiasts, and anyone involved in electrical wiring projects. It provides quick access to diagrams and calculations needed for safe and compliant electrical work. ## Version history (last 5 releases) ### 1.4.4 — 2026-06-21 -Overall performance and compatibility improvements for the latest iOS platforms. ### 1.4.3 — 2026-06-09 -Overall performance and compatibility improvements for the latest iOS platforms. ### 1.4.2 — 2024-10-14 -Overall performance and compatibility improvements for the latest iOS platforms. ### 1.4.1 — 2022-10-10 -Overall performance and compatibility improvements for the latest iOS platforms. ### 1.4.0 — 2021-12-31 -Added 11 new wiring diagrams(ceiling fan, bathroom/exhaust, and 4-way switch diagram variations) -Overall performance and compatibility improvements for latest iOS platforms. ## Apps similar to Electric Toolkit | App | Rating | Price | Category | | --- | --- | --- | --- | | [Electrical Calculator](https://appshunter.io/ios/app/electrical-calculator/id495478153) | 4.6 (462) | $3.99 | Utilities | | [Electrical Calculator lite](https://appshunter.io/ios/app/electrical-calculator-lite/id922903696) | 4.6 (573) | Free | Utilities | | [Electrical Calc Elite](https://appshunter.io/ios/app/electrical-calc-elite/id510284903) | 4.8 (125) | $19.99 | Utilities | | [AWG Calculator: Wire Size](https://appshunter.io/ios/app/awg-calculator-wire-size/id1607173204) | 4.6 (67) | Free | Utilities | | [Breaker Box: Panel Directory](https://appshunter.io/ios/app/breaker-box-panel-directory/id1459288663) | 4.4 (98) | Free | Utilities | | [Electrical Troubleshooter](https://appshunter.io/ios/app/electrical-troubleshooter/id1345925300) | 3.5 (13) | Free | Utilities | ## More apps by Cyberprodigy LLC - [Electrical Calc Elite](https://appshunter.io/ios/app/electrical-calc-elite/id510284903) - [Conduit Bender Elite - Calc](https://appshunter.io/ios/app/conduit-bender-elite-calc/id580768337) - [Pipe Calc Elite](https://appshunter.io/ios/app/pipe-calc-elite/id595640000) - [Scientific Calculator Elite](https://appshunter.io/ios/app/scientific-calculator-elite/id626128400) - [HVAC Refrigerant PT](https://appshunter.io/ios/app/hvac-refrigerant-pt/id633380165) All apps by Cyberprodigy LLC: https://appshunter.io/developer/510284906 ## Related topics [electrical tool kit](https://appshunter.io/ios/topics/electrical-tool-kit) · [diagram electrical](https://appshunter.io/ios/topics/diagram-electrical) · [electrical wiring lite](https://appshunter.io/ios/topics/electrical-wiring-lite) · [car electrical wiring diagram](https://appshunter.io/ios/topics/car-electrical-wiring-diagram) --- *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 2026-08-19.*