# Knot Guide vs PDF to Image.

The clearest difference is price: PDF to Image. at Free against Knot Guide's $2.99. PDF to Image. also leads on in-app purchases (none vs 2) and iOS requirement (14.0 vs 17.0). Knot Guide's advantage is rating (4.6 vs 2.5) and review sentiment (80% vs 50%). On update cadence, ads and device support there is nothing between them.

PDF to Image. is free to download; Knot Guide costs $2.99 up front. Knot Guide sells 2 in-app purchases, starting at $2.99 per month. PDF to Image. asks for nothing beyond the download.

Knot Guide holds the better App Store score, 4.6 against 2.5. That said, the two scores are not equally well evidenced: Knot Guide has 450 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 80% of Knot Guide's written reviews are positive against 50% of PDF to Image.'s.

Knot Guide ships an update monthly, PDF to Image. every 3 weeks. The most recent releases landed on September 27, 2026 and July 27, 2026 respectively.

## The numbers

| Metric | Knot Guide | PDF to Image. |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.6 (450 ratings)](https://appshunter.io/ios/app/knot-guide/id293111210/reviews)** | [2.5 (2 ratings)](https://appshunter.io/ios/app/pdf-to-image/id1446171450/reviews) |
| Number of ratings | **450** | 2 |
| Positive reviews | **79.6% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 298 MB | 1 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Winkpass Creations, Inc.](https://appshunter.io/developer/288636661) | [Muhammad Akif](https://appshunter.io/developer/1209959130) |

## What reviewers say

### Knot Guide

[App page](https://appshunter.io/ios/app/knot-guide/id293111210)

Learn to tie a wide variety of essential knots with this comprehensive guide. It provides step-by-step instructions for over 200 knots, making it a valuable resource for DIY enthusiasts, outdoor adventurers, and anyone needing to master knot-tying techniques.

**Highlights:** Extensive knot library (202+ knots), Step-by-step instructions, Suitable for various uses, Practical DIY resource, Easy to follow

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Knot Patron | $2.99 | per month |
| Yearly Knot Patron | $31.99 | per year |

**What reviewers like**

- 🌟 Great when free
- 👍 Clear instructions
- 📚 Comprehensive knot library
- 🔍 Easy to navigate
- 🗓️ Regularly updated

**What reviewers complain about**

- 💰 Expensive subscription model
- 🔒 Locking content behind paywall
- 🤔 Questionable business decisions
- 🏆 Devaluing previous purchases
- 🔍 Difficult to find specific knots

**Reported bugs**

- Paywall screen gets stuck
- Incompatibility with older devices

**Requested features**

- Add more aviation and climbing knots
- Provide more details on knot uses and strengths
- Allow offline access to all content


### PDF to Image.

[App page](https://appshunter.io/ios/app/pdf-to-image/id1446171450)

Convert PDF documents into high-quality images with this utility app. Easily select files from your device or cloud storage. The converted images are saved to your Photos app for convenient access and sharing.

**Highlights:** Convert PDF to image, Select files from device storage, Select files from cloud services, 3 quality levels for conversion, Save images to Photos app, Easy browsing and navigation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Knot Guide free?

Knot Guide costs $2.99, and also offers in-app purchases.

### Is PDF to Image. free?

PDF to Image. is free to download, with no in-app purchases.

### Which has better reviews, Knot Guide or PDF to Image.?

Knot Guide is rated higher. Knot Guide averages 4.6 out of 5 from 450 ratings, while PDF to Image. averages 2.5 from 2 ratings.

### Do Knot Guide or PDF to Image. have ads?

Neither Knot Guide nor PDF to Image. shows ads.

### Which is updated more often, Knot Guide or PDF to Image.?

Knot Guide ships an update monthly, and PDF to Image. every 3 weeks. Most recently, Knot Guide was updated on September 27, 2026 and PDF to Image. on July 27, 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.*