# Voltage Drop & Wire Size vs VoltForge

The clearest difference is monetization model: Voltage Drop & Wire Size at free against VoltForge's free with in-app purchases. VoltForge's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.0). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Voltage Drop & Wire Size sells 1 one-off in-app purchase and VoltForge sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Voltage Drop & Wire Size against 5.0 for VoltForge. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Voltage Drop & Wire Size ships an update every 2 weeks, VoltForge every 3 weeks. The most recent releases landed on October 14, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Voltage Drop & Wire Size | VoltForge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/voltage-drop-and-wire-size/id6762137454/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/voltforge/id6762475628/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 47 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alona Nesterenko](https://appshunter.io/developer/1890650834) | [Clark Allen](https://appshunter.io/developer/1888902287) |

## What reviewers say

### Voltage Drop & Wire Size

[App page](https://appshunter.io/ios/app/voltage-drop-and-wire-size/id6762137454)

Calculate voltage drop and size wires for electrical projects. Evaluate existing conductors or find the optimal size for your needs. Supports various electrical systems and international standards.

**Highlights:** Voltage drop calculation, Wire sizing, NEC/AWG and Metric support, Ampacity calculations, Save and reopen calculations, Adjustable temperature units

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $1.99 | one-time |


### VoltForge

[App page](https://appshunter.io/ios/app/voltforge/id6762475628)

This app provides electricians with essential field calculators, up-to-date code references, and a job estimator. It offers tools for Ohm's Law, voltage drop, conduit bending, and wire ampacity, all accessible offline. Pro features are available as a one-time purchase.

**Highlights:** Ohm's Law & Voltage Drop Calculator, Fraction & Wire Ampacity Tables, Conduit Bending & Fill Calculators, Wire Pull Tension Calculator, NEC 2023 Quick Reference, Job Estimator with PDF Export

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

**In-app purchases (1)**

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


## Frequently asked questions

### Is Voltage Drop & Wire Size free?

Voltage Drop & Wire Size is free to download, with in-app purchases available.

### Is VoltForge free?

VoltForge is free to download, with in-app purchases available.

### Which has better reviews, Voltage Drop & Wire Size or VoltForge?

Voltage Drop & Wire Size and VoltForge are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Voltage Drop & Wire Size or VoltForge have ads?

Neither Voltage Drop & Wire Size nor VoltForge shows ads.

### Which is updated more often, Voltage Drop & Wire Size or VoltForge?

Voltage Drop & Wire Size ships an update every 2 weeks, and VoltForge every 3 weeks. Most recently, Voltage Drop & Wire Size was updated on October 14, 2026 and VoltForge on October 5, 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.*