Comparison

Electrical Calc Elite vs VDrop

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

Head to head
About

Electrical Calc Elite

This app serves as a comprehensive NEC code calculator for electrical professionals. It helps electricians, contractors, and inspectors quickly and accurately solve common electrical calculations based on National Electric Codes, with support for multiple code versions and in-app purchases for updates.

Highlights
  • NEC Code Calculations
  • Wire Sizing
  • Voltage Drop
  • Conduit Sizing
  • Ohm's Law
  • Motor Calculations
  • Fuse and Breaker Sizing
Features
Read full description

Electrical Calc Elite™ is the electrician's code calculator that follows the NEC® edition your inspector enforces. Size wire, check voltage drop, fill conduit and size motor circuits — offline, in seconds. Answers that come from a code table print which one. One purchase, no subscription. Ten editions of the National Electrical Code® are built in — NEC® 2026*, 2023, 2020, 2017, 2014, 2011, 2008, 2005, 2002 and 1999 — and every table, correction factor and code reference follows the one you select. BUILT FOR Electricians, contractors, estimators, engineers, maintenance techs, inspectors, apprentices studying for the exam, and homeowners checking their work. WIRE SIZE AND AMPACITY • Required wire size in AWG or kcmil from amps: copper or aluminum, single-phase or three-phase, 60/75/90°C insulation, at 100% or 125% • Ampacity in raceway or free air, from the NEC® ampacity tables (310.16 and 310.17, or the earlier equivalents) • Ambient temperature correction above or below 30°C, in °C or °F • Adjustment for more than three current-carrying conductors in a raceway • Parallel and derated conductor sizing • Circular mils and kcmil for any wire size VOLTAGE DROP • Volts and percent dropped from one-way length, amps, phase and wire size, with Chapter 9 Table 8 resistance corrected to 60, 75 or 90°C • Wire size for a long run, flagged VD WIRE SIZE when the drop, not the ampacity table, set it • Longest one-way run a wire size will carry inside your limit: 3% by default, or any limit you set • 1- or 3-phase, copper or aluminum, feet or meters; wire resistance per 1000 ft on its own key CONDUIT SIZING AND FILL • 12 conduit types: EMT, ENT, FMC, IMC, LFNA, LFNB, LFMC, RMC, PVC schedule 40 and 80, Type A and Type EB • Trade size for a mix of THW/THHW, XHH/XHHW or THHN/THWN conductors • Fill percentage, cross-sectional area and area remaining, from the Chapter 9 tables, with the correct 1-, 2- and over-2-wire fill limits • Maximum conductors of a given size a conduit will take MOTORS • Full-load current for 1-phase, 3-phase, synchronous and DC motors, from NEC® Tables 430.247, 430.248 and 430.250 • Horsepower from amps, and full-load amps from horsepower • Maximum fuse and breaker size from Table 430.52 (430.52(C)(1) in 2023 and 2026) — single-element or dual-element fuse, inverse-time or instantaneous-trip breaker, across seven motor types • Motor overload protection per 430.32(A)(1) • NEMA starter size, per NEMA ICS 2 GROUNDING • Equipment grounding conductor size, per 250.122 • Grounding electrode conductor size, per 250.66 POWER, MATH AND CONVERSIONS • Convert between amps, watts, volts, VA, kVA, kW, power factor %, efficiency % and DC resistance • Ohm's Law: enter any two of ohms, volts or amps to get the third • Kirchhoff's Law • Parallel resistance • BTU ↔ kilowatt-hours • Doubles as a standard calculator, with Store and Recall memory keys CODE REFERENCES YOU CAN CHECK Wire size, fuse, breaker, overload and grounding answers print the table or section they came from, numbered as your selected edition numbers it. Fuse and breaker cards show the percentage of full-load current used and the current it was applied to. HELP BUILT IN Hold any function key to open the manual at that key's own section. A Help key opens it from the front, with worked keystroke examples. A Getting Started guide and the full manual are included. WORKS OFFLINE Every calculation runs on the device. No account, no sign-in, no ads, and no waiting on a signal in a basement or a mechanical room. SUPPORT Free technical support techsupport@cyberprodigy.com — https://www.cyberprodigy.com/contact.html Manual: https://www.cyberprodigy.com/electricalcalcelite/ *NEC® 2026 code data is a one-time in-app purchase. The other nine editions are included. Electrical Calc Elite™ is not associated with ElectriCalc® Pro and Cyberprodigy LLC is not affiliated with Calculated Industries, Inc.

About

VDrop

This utility calculates voltage drop for electrical systems up to 600V. It provides detailed calculation outputs to help users verify results and build confidence in their electrical work. Custom voltage inputs are supported.

Highlights
  • Voltage drop calculations
  • Supports up to 600V
  • Custom voltage input
  • Detailed calculation outputs
  • User confidence building
Features
Read full description

600V and less voltage drop calculator. Outputs provide the user details from the calculations to allow users to perform due diligence and develop confidence in the results. Custom voltages may be inputted (600V and less) also.

Screenshots

Electrical Calc Elite4 screens
VDrop4 screens

Verdict

The call

The clearest difference is price: VDrop at Free against Electrical Calc Elite's $19.99. VDrop also leads on in-app purchases (none vs 3) and review sentiment (100% vs 71%). Electrical Calc Elite's advantage is update cadence (every 3 months vs every 13 months) and ratings volume (126 vs 3). On 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

VDrop is free to download; Electrical Calc Elite costs $19.99 up front. Electrical Calc Elite sells 3 one-off in-app purchases. VDrop asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

VDrop holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Electrical Calc Elite has 126 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 71% of Electrical Calc Elite's written reviews are positive against 100% of VDrop's.

UpkeepUpdate frequency

Electrical Calc Elite ships an update every 3 months, VDrop every 13 months. The most recent releases landed on September 21, 2026 and June 1, 2026 respectively.

Scorecard8 real differences · 2 level
Electrical Calc Elite versus VDrop: the parameters behind the verdict, then further details
ParameterElectrical Calc EliteVDrop
Price$19.99Free — better
Rating4.8 (126 ratings)5.0 (3 ratings) — better
Positive reviews71.4% of reviews100.0% of reviews — better
Number of ratings126 — better3
Update frequencyEvery 3 months — betterEvery 13 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.610.0 — better
Further details — not scored
Size6 MB13 MB
Age rating4+4+
DeveloperCyberprodigy LLCNebulous LLC

Customer experience

Electrical Calc Elite

All ratings126 ratings
Positive95.2%
Neutral1.6%
Negative3.2%
Written reviews28 reviews
Positive71.4%
Neutral10.7%
Negative17.9%

VDrop

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Electrical Calc Elite

One-time3
  • NEC 2020 Code Additions$4.99
  • NEC 2023 Code Additions$4.99
  • NEC 2026 Code Additions$5.99
None

VDrop

No in-app purchases

Questions

Is Electrical Calc Elite free?
Electrical Calc Elite costs $19.99, and also offers in-app purchases.
Is VDrop free?
VDrop is free to download, with no in-app purchases.
Which has better reviews, Electrical Calc Elite or VDrop?
VDrop is rated higher. Electrical Calc Elite averages 4.8 out of 5 from 126 ratings, while VDrop averages 5.0 from 3 ratings.
Do Electrical Calc Elite or VDrop have ads?
Neither Electrical Calc Elite nor VDrop shows ads.
Which is updated more often, Electrical Calc Elite or VDrop?
Electrical Calc Elite ships an update every 3 months, and VDrop every 13 months. Most recently, Electrical Calc Elite was updated on September 21, 2026 and VDrop on June 1, 2026.

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