Voltage Drop Calculator. vs Overhead Install Guide
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Voltage Drop Calculator.
Calculate voltage drop and wire size using both NEC and IEC standards. Supports various load types, conductor materials, and system configurations. Generates detailed reports for electricians, engineers, and contractors.
- NEC and IEC dual standards
- Voltage drop and wire sizing calculations
- Support for continuous load and corrections
- Copper or Aluminum conductor options
- Single-phase and three-phase systems
- Automatic compliance checks
- PDF report generation
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Perform accurate Voltage Drop and Wire Sizing calculations for both NEC® (National Electrical Code) and IEC standards. Built for electricians, engineers, and contractors who need reliable results on the go. Voltage Drop Calculator • Dual standards: Switch between NEC (AWG/Imperial) and IEC (mm²/Metric) • Enter voltage, current, run length, and power factor • Supports continuous load (125%), grouping, and ambient temperature corrections • Copper or Aluminum conductors for single-phase and three-phase systems • Detailed results including ampacity, derating, voltage drop, and load voltage • Automatic compliance checks (e.g., ≤ 3% for branch circuits) Wire Size Calculator (Reverse) • Calculates required wire size for a target voltage drop % • Suggests optimal AWG, kcmil, or mm² • Uses NEC Chapter 9, Table 9 (AC impedance) with DC fallback Professional Tools • Wire converter (AWG/kcmil ↔ mm²) • Generate and share PDF reports • Handy electrical formula cards • Localized in English, Spanish, French, German, Italian, Dutch, Portuguese, and Chinese
Overhead Install Guide
This utility app offers Southwire's official recommendations for installing overhead transmission electrical conductors. It provides essential field information and includes a calculator for determining bullwheel and block diameters.
- Overhead conductor installation recommendations
- Information from Overhead Conductor Manual
- Industry standard IEEE 524 data
- Bullwheel and block diameter calculator
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This app provides Southwire’s recommendations for the installation of overhead transmission electrical conductors. It is a convenient way to have the information you need for a successful installation with you in the field. Features: Recommendations for the installation of overhead transmission electrical conductors. Information from our Overhead Conductor Manual and the industry accepted standard IEEE 524. Calculator to determine the minimum diameter of the bullwheel and blocks needed for installation.
Screenshots
Verdict
The clearest difference is in-app purchases: Overhead Install Guide at none against Voltage Drop Calculator.'s 1. Overhead Install Guide also leads on ads (none vs shown). Voltage Drop Calculator.'s advantage is ratings volume (410 vs 5) and update cadence (every 3 months vs every 9 months). On price, rating, device support and iOS requirement 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. Voltage Drop Calculator. sells 1 one-off in-app purchase. Overhead Install Guide asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.6 for Voltage Drop Calculator. against 4.6 for Overhead Install Guide. That said, the two scores are not equally well evidenced: Voltage Drop Calculator. has 410 ratings behind it against 5, so its average is the more settled of the two.
Voltage Drop Calculator. ships an update every 3 months, Overhead Install Guide every 9 months. The most recent releases landed on September 18, 2026 and July 31, 2026 respectively.
| Parameter | Voltage Drop Calculator. | Overhead Install Guide |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (410 ratings) | 4.6 (5 ratings) |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 410 — better | 5 |
| Update frequency | Every 3 months — better | Every 9 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.6 | 16.6 — better |
| Further details — not scored | ||
| Size | 51 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | V PUGAZHENTHI | Southwire Company |
Customer experience
Voltage Drop Calculator.
Overhead Install Guide
In-app purchases
Voltage Drop Calculator.
- Go Pro$4.99
Overhead Install Guide
No in-app purchases
Questions
Is Voltage Drop Calculator. free?
Is Overhead Install Guide free?
Which has better reviews, Voltage Drop Calculator. or Overhead Install Guide?
Do Voltage Drop Calculator. or Overhead Install Guide have ads?
Which is updated more often, Voltage Drop Calculator. or Overhead Install Guide?
Other comparisons
