Southwire® Voltage Drop Calc vs Eyrus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- Automatic job site check-in/out
- View timesheets
- Update profile and certifications
- QR code project registration
- Digital document signing
- Workforce visibility
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
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.
| Parameter | Southwire® Voltage Drop Calc | Eyrus |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (1.5K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 48.1% of reviews | — |
| Number of ratings | 1.5K — better | 1 |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Southwire Company | Eyrus |
Customer experience
Southwire® Voltage Drop Calc
Eyrus
Bugs and requests
Southwire® Voltage Drop Calc
Reported bugs
24 issues- Useless!
- Won't work
- How to use
- Confused
- Bad app
Show 19 moreShow fewer
- 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
Southwire® Voltage Drop Calc
No in-app purchases
Eyrus
No in-app purchases
Questions
Is Southwire® Voltage Drop Calc free?
Is Eyrus free?
Which has better reviews, Southwire® Voltage Drop Calc or Eyrus?
Do Southwire® Voltage Drop Calc or Eyrus have ads?
Which is updated more often, Southwire® Voltage Drop Calc or Eyrus?
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