VDrop vs Concentric Neutral Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Concentric Neutral Calculator
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Calculate your best concentric neutral configuration for Medium Voltage Cables based on ICEA S-94-649 standard for Utility and Renewable (Solar, Wind, BESS) applications.
Screenshots
Verdict
The clearest difference is iOS requirement: VDrop at 10.0 against Concentric Neutral Calculator's 16.6. 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.
VDrop ships an update every 13 months, Concentric Neutral Calculator every 7 months. The most recent releases landed on June 1, 2026 and September 19, 2026 respectively.
| Parameter | VDrop | Concentric Neutral Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 13 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 13 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Nebulous LLC | Southwire Company |
In-app purchases
VDrop
No in-app purchases
Concentric Neutral Calculator
No in-app purchases
Questions
Is VDrop free?
Is Concentric Neutral Calculator free?
Do VDrop or Concentric Neutral Calculator have ads?
Which is updated more often, VDrop or Concentric Neutral Calculator?
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