Voltage Drop Calculator. vs VDrop
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
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.
- Voltage drop calculations
- Supports up to 600V
- Custom voltage input
- Detailed calculation outputs
- User confidence building
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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
Verdict
The clearest difference is review sentiment: VDrop at 100% against Voltage Drop Calculator.'s 33%. VDrop also leads on in-app purchases (none vs 1) and ads (none vs shown). Voltage Drop Calculator.'s advantage is ratings volume (410 vs 3) and update cadence (every 3 months vs every 13 months). On price 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
Both are free to download. Voltage Drop Calculator. sells 1 one-off in-app purchase. VDrop asks for nothing beyond the download.
VDrop holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Voltage Drop Calculator. has 410 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 33% of Voltage Drop Calculator.'s written reviews are positive against 100% of VDrop's.
Voltage Drop Calculator. ships an update every 3 months, VDrop every 13 months. The most recent releases landed on September 18, 2026 and June 1, 2026 respectively.
| Parameter | Voltage Drop Calculator. | VDrop |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (410 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 33.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 410 — better | 3 |
| Update frequency | Every 3 months — better | Every 13 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 10.0 — better |
| Further details — not scored | ||
| Size | 51 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | V PUGAZHENTHI | Nebulous LLC |
Customer experience
Voltage Drop Calculator.
VDrop
In-app purchases
Voltage Drop Calculator.
- Go Pro$4.99
VDrop
No in-app purchases
Questions
Is Voltage Drop Calculator. free?
Is VDrop free?
Which has better reviews, Voltage Drop Calculator. or VDrop?
Do Voltage Drop Calculator. or VDrop have ads?
Which is updated more often, Voltage Drop Calculator. or VDrop?
Other comparisons
