# Voltage Drop Calculator. vs Knot Now

The clearest difference is rating: Voltage Drop Calculator. at 4.6 against Knot Now's 1.0. Voltage Drop Calculator. also leads on ratings volume (414 vs 1). Knot Now's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, 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. Knot Now asks for nothing beyond the download.

Voltage Drop Calculator. holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: Voltage Drop Calculator. has 414 ratings behind it against 1, so its average is the more settled of the two.

Voltage Drop Calculator. ships an update every 3 months, Knot Now every 6 weeks. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Voltage Drop Calculator. | Knot Now |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (414 ratings)](https://appshunter.io/ios/app/voltage-drop-calculator/id1203737064/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/knot-now/id6792155299/reviews) |
| Number of ratings | **414** | 1 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 51 MB | 13 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Amol Srivastava](https://appshunter.io/developer/1892119479) |

## 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 |


### Knot Now

[App page](https://appshunter.io/ios/app/knot-now/id6792155299)

Learn to tie over 200 knots with interactive 3D animations and step-by-step lessons. Organized by real-world use, it offers detailed comparisons and offline access for all your knot-tying needs.

**Highlights:** 225+ knots with 3D animations, Step-by-step lessons, Organized by real-world use, Offline functionality, Knot comparison tool, Progress tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is Voltage Drop Calculator. free?

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

### Is Knot Now free?

Knot Now is free to download, with no in-app purchases.

### Which has better reviews, Voltage Drop Calculator. or Knot Now?

Voltage Drop Calculator. is rated higher. Voltage Drop Calculator. averages 4.6 out of 5 from 414 ratings, while Knot Now averages 1.0 from 1 ratings.

### Do Voltage Drop Calculator. or Knot Now have ads?

Voltage Drop Calculator. shows ads; Knot Now does not.

### Which is updated more often, Voltage Drop Calculator. or Knot Now?

Voltage Drop Calculator. ships an update every 3 months, and Knot Now every 6 weeks. Most recently, Voltage Drop Calculator. was updated on October 29, 2026 and Knot Now on October 28, 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.*