Southwire® Voltage Drop Calc vs Orbitas
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.
Orbitas
This app enables users to view accuracy and positional data from Asteri GNSS receivers. It allows for Real-Time Kinematic corrections and the collection of precise utility line information for above and below-ground features.
- View GNSS receiver accuracy and quality
- Apply Real-Time Kinematic corrections
- Utilize corrections in Apple software
- Collect utility line information
- Support for above and below-ground features
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Orbitas Field, allows users to view accuracy, quality and positional information for the brand new Asteri GNSS receivers. Further, apply Real-Time Kinematic correction information directly to Asteri GNSS and then utilize in any Apple supported software that utilizes Integrated Location Services. Still need more... Utilize Orbitas field to collect accurate utility line information for above and below-ground features!
Screenshots
Verdict
The clearest difference is rating: Orbitas at 5.0 against Southwire® Voltage Drop Calc's 4.6. Orbitas also leads on iOS requirement (13.0 vs 15.0). Southwire® Voltage Drop Calc's advantage is ratings volume (1.5K vs 2). 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.
Orbitas 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 2, so its average is the more settled of the two.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 30, 2026 and October 4, 2026 respectively.
| Parameter | Southwire® Voltage Drop Calc | Orbitas |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (1.5K ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 49.1% of reviews | — |
| Number of ratings | 1.5K — better | 2 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 163 MB |
| Age rating | 4+ | 4+ |
| Developer | Southwire Company | Tri-Global Technologies LLC |
Customer experience
Southwire® Voltage Drop Calc
Orbitas
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
Orbitas
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Southwire® Voltage Drop Calc
No in-app purchases
Orbitas
No in-app purchases
Questions
Is Southwire® Voltage Drop Calc free?
Is Orbitas free?
Which has better reviews, Southwire® Voltage Drop Calc or Orbitas?
Do Southwire® Voltage Drop Calc or Orbitas have ads?
Which is updated more often, Southwire® Voltage Drop Calc or Orbitas?
Other comparisons
