Comparison

NEMA Guide vs CircuitSense

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

Head to head
About

NEMA Guide

Features
Read full description

Use the NEMA Guide app to quickly identify and cross-reference NEMA plug and receptacle configurations—a must-have tool for electricians and electrical professionals on the job. Whether you're trying to identify an unknown plug or need to confirm the right receptacle for a specific application, this app streamlines the process. Simply search by NEMA number or filter by voltage, amperage, phase, poles, wires, and grounding type to view all matching results. With illustrations and detailed specs for each configuration, to save you time and avoid guesswork on-site. Features: - Search by NEMA configuration number. - Filter by voltage, amperage, phase, poles, wires, and grounding. - Instantly view matching plug and receptacle configurations. - Over 170 high-quality configuration illustrations. - Tap to view detailed specs for each configuration. - Cross-reference plugs and receptacles with ease. - Data is stored locally for quick use in the field or on the job-site.

About

CircuitSense

This app automates complex electrical calculations for electricians, including conduit sizing, conductor ampacity, and voltage drop, based on the 2026 NEC. It provides detailed explanations for each result and organizes calculations by project for easy access and professional output sharing.

Highlights
  • 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
Features
Read full description

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

Screenshots

NEMA Guide4 screens
CircuitSense4 screens

Verdict

The call

The clearest difference is in-app purchases: NEMA Guide at none against CircuitSense's 2. CircuitSense's advantage is iOS requirement (13.0 vs 17.6). On price, update cadence, ads and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. CircuitSense sells 2 in-app purchases, starting at $9.99 per month. NEMA Guide asks for nothing beyond the download.

UpkeepUpdate frequency

NEMA Guide ships an update every 2 days, CircuitSense every 3 days. The most recent releases landed on October 1, 2026 and October 6, 2026 respectively.

Scorecard2 real differences · 8 level
NEMA Guide versus CircuitSense: the parameters behind the verdict, then further details
ParameterNEMA GuideCircuitSense
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 2 days — betterEvery 3 days
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.613.0 — better
Further details — not scored
Size23 MB37 MB
Age rating4+4+
DeveloperRed Zepp LLCCircuitSense LLC

In-app purchases

None

NEMA Guide

No in-app purchases

2 purchases

CircuitSense

Subscriptions2
  • CircuitSense Pro7 Days trial$9.991 Month
  • CircuitSense Pro7 Days trial$79.991 Year

Questions

Is NEMA Guide free?
NEMA Guide is free to download, with no in-app purchases.
Is CircuitSense free?
CircuitSense is free to download, with in-app purchases available.
Do NEMA Guide or CircuitSense have ads?
Neither NEMA Guide nor CircuitSense shows ads.
Which is updated more often, NEMA Guide or CircuitSense?
NEMA Guide ships an update every 2 days, and CircuitSense every 3 days. Most recently, NEMA Guide was updated on October 1, 2026 and CircuitSense on October 6, 2026.

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