# Voltage Drop Calculator. vs KNBL Lancer

The clearest difference is ads: KNBL Lancer at none against Voltage Drop Calculator.'s shown. KNBL Lancer also leads on update cadence (every 2 weeks vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Voltage Drop Calculator. sells 1 one-off in-app purchase and KNBL Lancer sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Voltage Drop Calculator. ships an update every 3 months, KNBL Lancer every 2 weeks. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Voltage Drop Calculator. | KNBL Lancer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (414 ratings)](https://appshunter.io/ios/app/voltage-drop-calculator/id1203737064/reviews)** | — |
| Number of ratings | **414** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 51 MB | 7 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Jan Knaeble](https://appshunter.io/developer/1847011481) |

## What reviewers say

### 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 |


### KNBL Lancer

[App page](https://appshunter.io/ios/app/knbl-lancer/id6754189907)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $17.99 | per year |


## Frequently asked questions

### Is Voltage Drop Calculator. free?

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

### Is KNBL Lancer free?

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

### Do Voltage Drop Calculator. or KNBL Lancer have ads?

Voltage Drop Calculator. shows ads; KNBL Lancer does not.

### Which is updated more often, Voltage Drop Calculator. or KNBL Lancer?

Voltage Drop Calculator. ships an update every 3 months, and KNBL Lancer every 2 weeks. Most recently, Voltage Drop Calculator. was updated on October 28, 2026 and KNBL Lancer on October 25, 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.*