# CircuitSense > Field calculator for electricians, automating NEC code calculations for conduit, conductors, and more. (iPhone/iPad app by CircuitSense LLC.) - Source: https://appshunter.io/ios/app/circuitsense/id6755273867 (this page in markdown: same URL + `.md`) - Developer: [CircuitSense LLC](https://appshunter.io/developer/1850351250) - Category: Utilities - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 37 MB - Languages: American English - Released: 2026-07-06 - Data updated: 2026-09-19 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/circuitsense/id6755273867/reviews.md ## What is CircuitSense? CircuitSense is the field calculator built for electricians who'd rather pull wire than dig through code books. Enter your circuits once and it sizes conduit, conductors, and grounds to the 2026 NEC — handling voltage drop, derating, and box fill automatically, with the math shown so you can trust every number. PLAN YOUR CONDUIT Build a complete run from a single input. CircuitSense balances circuits across conduits, picks the optimal raceway size, applies ambient and conductor-count derating, upsizes for voltage drop, and segments the run at every J-box / pull point. You get a full pull schedule with per-conduit fill percentages — before and after each box. EVERY NUMBER, EXPLAINED No black boxes. Each result shows the calculation steps, the NEC section behind it, and an upsize history so you can see exactly why a conductor went from #12 to #8. Perfect for inspections, plan review, or just double-checking your gut. A FULL NEC TOOLKIT Conductor sizing & voltage drop — ampacity, derating, and VD in one flow Conduit fill — by conductor count and type Box fill — NEC 314.16 volume by AWG and device Pull box sizing — 314.28 straight, angle/U, and splice Load calculations — dwellings, multi-family, and offices Fault current — available fault-current estimates Transformer sizing — kVA, amps, and OCPD suggestions Conduit bending — stub-90, offset, 3- and 4-point saddle Panel phasing — see circuit phases by slot (12/24/42) Construction calculator — feet/inches and tape-measure fractions Concrete & trench — slab, footing, trench/backfill, and duct bank ORGANIZED BY PROJECT Group runs under jobs, track which are complete, and reopen any run to tweak and recalculate. Your work is saved on-device and ready when you're back on site. SHARE PROFESSIONAL OUTPUT Export any run as a clean, detailed PDF — conduit schedule, fill, derating, and EGC sizing all included. Hand it to an inspector, a GC, or your own crew. BUILT FOR THE FIELD 2026 NEC referenced throughout Works offline — no signal required in the basement or the bucket Fast, single-input workflow designed for gloves and daylight Copper or aluminum, EMT and more Whether you're roughing in a panel, planning a duct bank, or checking voltage drop on a long run, CircuitSense does the code math so you can keep moving. Download CircuitSense and size it right the first time. — CircuitSense is a calculation aid for licensed electricians and qualified persons. Always verify results against the adopted code and your local authority having jurisdiction (AHJ). It does not replace engineered design or professional judgment. Terms of Use (EULA): https://circuitsense.app/terms-of-service Privacy Policy: https://circuitsense.app/privacy-policy ## Key features - Automated conduit and conductor sizing - Voltage drop and derating calculations - Box fill and pull box sizing - Load calculations for various building types - Fault current and transformer sizing - Conduit bending and panel phasing tools - Offline functionality ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | CircuitSense Pro | $9.99 | per month | | CircuitSense Pro | $79.99 | per year | ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/circuitsense/id6755273867/reviews.md ### 5/5 — Great App *2026-07-18, version 1.1* This is a great application and a tool in your toolbox. If you work in the trades, you will definitely be able to utilize this and it will help you in this world of AI to be more productive and efficient either away from site and definitely on site. ### 5/5 — Great App *2026-07-08, version 1.0* This is an awesome tool for speeding up my day to day work. No longer will you struggle to find measurements for conduit or have to guess your fill. If you’re looking for a way to boost productivity, CircuitSense is the way to go! ## Frequently asked questions about CircuitSense ### What is CircuitSense? CircuitSense is a field calculator designed for electricians to automate complex calculations based on the 2026 NEC. It helps size conduit, conductors, and grounds, and handles voltage drop and derating automatically, showing the math behind each result. ### Does CircuitSense work offline? Yes, CircuitSense is built for the field and works offline, meaning you don't need a signal to perform calculations in basements or remote locations. ### What electrical calculations does CircuitSense perform? CircuitSense performs a wide range of calculations including conductor sizing, voltage drop, conduit fill, box fill, load calculations, fault current, transformer sizing, conduit bending, and panel phasing. ### Can I share my calculations from CircuitSense? Yes, you can export any run as a clean, detailed PDF, including conduit schedules, fill percentages, derating information, and EGC sizing, making it easy to share with inspectors, GCs, or your crew. ### How is CircuitSense organized? Calculations in CircuitSense are organized by project. You can group runs under specific jobs, track their completion status, and reopen any run to make adjustments and recalculate. ### What version of the NEC does CircuitSense use? CircuitSense references the 2026 NEC throughout its calculations and tools, ensuring you are working with the latest code standards. ### Is CircuitSense free to use? CircuitSense is free to download and use for its core calculation features. There are optional subscription plans, CircuitSense Pro, available for $9.99 per month or $79.99 per year, both offering a 7-day free trial. ### What devices does CircuitSense support? CircuitSense is available for iPhone, iPad, and iPod devices, making it accessible on a range of Apple mobile products. ## Version history (last 2 releases) ### 1.1 — 2026-07-09 What's new in 1.1.0: • Split exports — send a clean Pull Schedule (colors, sizes, lengths, circuits) straight to the shop or the field, or export the full Data Set with all the sizing and NEC reasoning for your records. Choose the format right when you export. • Export by panel or by run — export a whole project, just one panel (M1, P1, …), or hand-pick exactly the runs a specific crew needs. • Sharper pull schedules — aligned tables, EGC size, per-conductor lengths, and per-conduit totals (EGC, fill, CCC, wire count) on every sheet. J-box runs now show the conduit pull length. • Lock a run — freeze a verified run so nothing can change it. Unlock anytime to edit. • More consistent — your Distribute setting now sticks, panels stay open where you left them, and the PDF matches exactly what you see on screen. Start with a 7-day free trial. Questions or feature requests? support@circuitsense.app ### 1.0 — 2026-07-06 No release notes. ## Apps similar to CircuitSense | App | Rating | Price | Category | | --- | --- | --- | --- | | [FILL ◦ Conduit Fill Calculator](https://appshunter.io/ios/app/fill-conduit-fill-calculator/id6760678246) | 4.0 (3) | Free | Utilities | | [Pi SSH – Raspberry Pi Control](https://appshunter.io/ios/app/pi-ssh-raspberry-pi-control/id6767036795) | 5.0 (5) | Free | Utilities | | [Electric Toolkit - Calculator](https://appshunter.io/ios/app/electric-toolkit-calculator/id516862639) | 4.8 (288) | $5.99 | Utilities | | [Export Contacts To Excel Fast](https://appshunter.io/ios/app/export-contacts-to-excel-fast/id6726997915) | 5.0 (2) | Free | Utilities | | [Innova DiagDR](https://appshunter.io/ios/app/innova-diagdr/id6443548982) | 5.0 (5) | Free | Utilities | | [CoronaSDR: RTL-SDR Client](https://appshunter.io/ios/app/coronasdr-rtl-sdr-client/id6759222137) | 5.0 (5) | Free | Utilities | --- *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 2026-09-19.*