# Knot Guide HD vs Trimm 420

The clearest difference is price: Trimm 420 at Free against Knot Guide HD's $4.99. Trimm 420 also leads on device support (3 vs 1). On update cadence, ads, in-app purchases and iOS requirement there is nothing between them.

Trimm 420 is free to download; Knot Guide HD costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Knot Guide HD ships an update every 12 months, Trimm 420 every 18 months. The most recent releases landed on August 5, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | Knot Guide HD | Trimm 420 |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.1 (23 ratings)](https://appshunter.io/ios/app/knot-guide-hd/id374225992/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 77.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 12 months** | Every 18 months |
| Monetization | Paid | — |
| Size | 99 MB | 20 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Winkpass Creations, Inc.](https://appshunter.io/developer/288636661) | [Gustav Schubert](https://appshunter.io/developer/670940970) |

## What reviewers say

### Knot Guide HD

[App page](https://appshunter.io/ios/app/knot-guide-hd/id374225992)

Learn to tie over 100 different knots with clear, step-by-step instructions and photographs. This app categorizes knots for easy browsing and provides detailed descriptions for each one, making it a practical tool for various activities.

**Highlights:** 107 unique knots, Clear, colorful photographs, Browse by category or knot name, Detailed knot descriptions, Categorized knot library

**Features:** macOS Compatibility

**In-app purchases:** none


### Trimm 420

[App page](https://appshunter.io/ios/app/trimm-420/id989762941)

**In-app purchases:** none


## Frequently asked questions

### Is Knot Guide HD free?

Knot Guide HD costs $4.99, with no in-app purchases.

### Is Trimm 420 free?

Trimm 420 is free to download, with no in-app purchases.

### Do Knot Guide HD or Trimm 420 have ads?

Neither Knot Guide HD nor Trimm 420 shows ads.

### Which is updated more often, Knot Guide HD or Trimm 420?

Knot Guide HD ships an update every 12 months, and Trimm 420 every 18 months. Most recently, Knot Guide HD was updated on August 5, 2026 and Trimm 420 on May 17, 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.*