# DC Wire Sizer vs Voltage Drop Calculator.

The clearest difference is review sentiment: DC Wire Sizer at 100% against Voltage Drop Calculator.'s 33%. DC Wire Sizer also leads on in-app purchases (none vs 1) and ads (none vs shown). Voltage Drop Calculator.'s advantage is price (Free vs $2.99) and update cadence (every 3 months vs every 20 months). On device support there is nothing between them.

Voltage Drop Calculator. is free to download; DC Wire Sizer costs $2.99 up front. Voltage Drop Calculator. sells 1 one-off in-app purchase. DC Wire Sizer asks for nothing beyond the download.

DC Wire Sizer 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 23, so its average is the more settled of the two. Written reviews point the same way: 100% of DC Wire Sizer's written reviews are positive against 33% of Voltage Drop Calculator.'s.

DC Wire Sizer ships an update every 20 months, Voltage Drop Calculator. every 3 months. The most recent releases landed on August 24, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | DC Wire Sizer | Voltage Drop Calculator. |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (23 ratings)](https://appshunter.io/ios/app/dc-wire-sizer/id629190351/reviews)** | [4.6 (410 ratings)](https://appshunter.io/ios/app/voltage-drop-calculator/id1203737064/reviews) |
| Number of ratings | 23 | **410** |
| Positive reviews | **100.0% of reviews** | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 20 months | **Every 3 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#194** | — |
| Size | 21 MB | 51 MB |
| Requires iOS | **9.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dirty Dog Software, LLC](https://appshunter.io/developer/629190354) | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) |

## What reviewers say

### DC Wire Sizer

[App page](https://appshunter.io/ios/app/dc-wire-sizer/id629190351)

**Currently charting:** #194 Top Paid · Utilities (US App Store)

Calculate appropriate DC wire sizes for electrical projects, preventing equipment damage and fires. Save, edit, and export wire run details for electrical plans and material purchases. Features a wizard for easy sizing for all users.

**Highlights:** Calculates wire size, voltage drop, and ampacity, Supports custom DC voltages up to 500 amps, Save, edit, and export wire run details, Sizer Wizard for easy calculations, Select marine standards (ABYC or ISO), Choose from various wire types and insulation ratings

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Voltage Drop Calculator.

[App page](https://appshunter.io/ios/app/voltage-drop-calculator/id1203737064)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Go Pro | $4.99 | one-time |


## Frequently asked questions

### Is DC Wire Sizer free?

DC Wire Sizer costs $2.99, with no in-app purchases.

### Is Voltage Drop Calculator. free?

Voltage Drop Calculator. is free to download, with in-app purchases available.

### Which has better reviews, DC Wire Sizer or Voltage Drop Calculator.?

DC Wire Sizer is rated higher. DC Wire Sizer averages 5.0 out of 5 from 23 ratings, while Voltage Drop Calculator. averages 4.6 from 410 ratings.

### Do DC Wire Sizer or Voltage Drop Calculator. have ads?

Voltage Drop Calculator. shows ads; DC Wire Sizer does not.

### Which is updated more often, DC Wire Sizer or Voltage Drop Calculator.?

DC Wire Sizer ships an update every 20 months, and Voltage Drop Calculator. every 3 months. Most recently, DC Wire Sizer was updated on August 24, 2026 and Voltage Drop Calculator. on September 18, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*