Comparison

Southwire® Voltage Drop Calc vs Eyrus

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

Head to head
About

Southwire® Voltage Drop Calc

Calculate the appropriate wire size for electrical circuits. This tool helps determine wire size based on voltage drop and current carrying capacity, ensuring compliance with NEC ampacity limits.

Highlights
  • Determine wire size for voltage drop
  • Calculate voltage drop for conductor runs
  • Limit wire size by voltage drop
  • Limit wire size by NEC ampacity
  • Supports AWG and KCMIL sizes
Features
Read full description

Southwire's voltage drop calculator will help you determine the proper wire size for an electrical circuit based on the voltage drop and current carrying capacity of an electrical circuit. Determines wire size to meet specific voltage drop limits or calculates voltage drop for a specific conductor run. When sizing conductors, calculations limits wire size to voltage drop and NEC ampacity. Southwire's Voltage Drop Calculator is designed for applications using AWG and KCMIL sizes only.

About

Eyrus

This app simplifies workforce management by providing automatic check-in/out, timesheet viewing, and profile updates for tradespeople. It allows easy project registration via QR code scanning and streamlines document review and submission.

Highlights
  • Automatic job site check-in/out
  • View timesheets
  • Update profile and certifications
  • QR code project registration
  • Digital document signing
  • Workforce visibility
Features
Read full description

The Eyrus app provides simple and automatic workforce management, visibility, and badging tools no matter the project or job size. Tradespeople can register themselves to a project, automatically check-in and out of the job site, view timesheets, and keep their profile and certification information up-to-date right in the app. Projects can be joined easily by scanning a QR code. Then complete the necessary registration information, review and sign documents, and submit for review. Once registration is approved, head to the job site to automatically track work hours. The Eyrus app handles check-in and check-out automatically based on project location.

Screenshots

Southwire® Voltage Drop Calc4 screens
Eyrus4 screens

Verdict

The call

The clearest difference is rating: Eyrus at 5.0 against Southwire® Voltage Drop Calc's 4.6. Southwire® Voltage Drop Calc's advantage is ratings volume (1.5K vs 1). On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Eyrus holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Southwire® Voltage Drop Calc has 1.5K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Southwire® Voltage Drop Calc ships an update every 2 months, Eyrus monthly. The most recent releases landed on September 17, 2026 and June 13, 2026 respectively.

Scorecard2 real differences · 8 level
Southwire® Voltage Drop Calc versus Eyrus: the parameters behind the verdict, then further details
ParameterSouthwire® Voltage Drop CalcEyrus
PriceFreeFree
Rating4.6 (1.5K ratings)5.0 (1 ratings) — better
Positive reviews48.1% of reviews—
Number of ratings1.5K — better1
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.014.0 — better
Further details — not scored
Size10 MB14 MB
Age rating4+4+
DeveloperSouthwire CompanyEyrus

Customer experience

Southwire® Voltage Drop Calc

All ratings1,358 ratings
Positive89.7%
Neutral2.2%
Negative8.1%
Written reviews52 reviews
Positive48.1%
Neutral3.8%
Negative48.1%

Eyrus

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Southwire® Voltage Drop Calc

Reported bugs

24 issues
  • Useless!
  • Won't work
  • How to use
  • Confused
  • Bad app
Show 19 more
  • Bad
  • Not applicable for Residential
  • Electrician
  • Terrible
  • Not working
  • What??
  • Terrible
  • Don't work
  • Terrible
  • Choice Between AWG and Metric wire Gauge
  • Updated app not so simple
  • The last version was better
  • App
  • Terrible
  • Voltage drop calculator
  • IOS 8
  • One flaw
  • Worst app ever
  • Average

Requested features

2 requests
  • Motor starting Voltage drop calculation
  • Metric wire size options

Eyrus

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Southwire® Voltage Drop Calc

No in-app purchases

None

Eyrus

No in-app purchases

Questions

Is Southwire® Voltage Drop Calc free?
Southwire® Voltage Drop Calc is free to download, with no in-app purchases.
Is Eyrus free?
Eyrus is free to download, with no in-app purchases.
Which has better reviews, Southwire® Voltage Drop Calc or Eyrus?
Eyrus is rated higher. Southwire® Voltage Drop Calc averages 4.6 out of 5 from 1.5K ratings, while Eyrus averages 5.0 from 1 ratings.
Do Southwire® Voltage Drop Calc or Eyrus have ads?
Neither Southwire® Voltage Drop Calc nor Eyrus shows ads.
Which is updated more often, Southwire® Voltage Drop Calc or Eyrus?
Southwire® Voltage Drop Calc ships an update every 2 months, and Eyrus monthly. Most recently, Southwire® Voltage Drop Calc was updated on September 17, 2026 and Eyrus on June 13, 2026.

Other comparisons