# Knots 3D vs Select 3M

The clearest difference is update cadence: Knots 3D at fortnightly against Select 3M's every 4 months. Knots 3D also leads on ratings volume (13K vs 1) and price ($5.99 vs $9.99). On rating, review sentiment, ads and in-app purchases there is nothing between them.

Knots 3D costs $5.99 and Select 3M $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.9 for Knots 3D against 5.0 for Select 3M. That said, the two scores are not equally well evidenced: Knots 3D has 13K ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 98% of Knots 3D's written reviews are positive against 100% of Select 3M's.

Knots 3D ships an update fortnightly, Select 3M every 4 months. The most recent releases landed on September 25, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Knots 3D | Select 3M |
| --- | --- | --- |
| Price | **$5.99** | $9.99 |
| Rating | [4.9 (13K ratings)](https://appshunter.io/ios/app/knots-3d/id453571750/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/select-3m/id503712231/reviews)** |
| Number of ratings | **13K** | 1 |
| Positive reviews | 97.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 months |
| Monetization | **Free** | Paid |
| Best chart rank | **#2** | — |
| Size | 511 MB | 60 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nynix](https://appshunter.io/developer/425939481) | [Colorix SA](https://appshunter.io/developer/372237429) |

## What reviewers say

### Knots 3D

[App page](https://appshunter.io/ios/app/knots-3d/id453571750)

**Currently charting:** #2 Top Paid · Reference, #150 Top Paid (US App Store)

Master over 220 essential knots with detailed 3D animations and offline access. This app is perfect for learning rope work for activities like fishing, climbing, and boating, offering interactive tutorials and customizable organization features.

**Highlights:** 225+ knots in 12+ categories, Offline access, no internet required, Interactive 3D knot animations, Rotate and scrub through knot tying, Customizable knot categories, Add personal notes and keywords, ABOK number cross-reference

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

**In-app purchases:** none

**What reviewers like**

- 👍 Excellent instructions and animations
- 🚀 Adjustable speed control for learning
- 🔍 Ability to view knots from different angles
- 📚 Comprehensive knot library
- 💡 Detailed information on knot uses and history

**What reviewers complain about**

- 🐛 Favorites list disappearing after updates
- 💡 Desire for more splices and advanced knots
- 💡 Request for step-by-step instructions and ability to pause/rewind animations

**Reported bugs**

- Favorites list disappearing after updates

**Requested features**

- Add more splices and advanced knots
- Implement step-by-step instructions and ability to pause/rewind animations
- Add a continuous loop option for the knot animations
- Introduce a game mode or practice feature


### Select 3M

[App page](https://appshunter.io/ios/app/select-3m/id503712231)

This app digitally displays 3M graphic film colors, allowing designers and professionals to select and apply them to images. It helps find the exact color reference and RGB values, and can compare similar shades for efficient project planning.

**Highlights:** Digital display of 3M graphic film colors, Apply selected colors to images, View reference numbers and RGB values, Compare nearest color shades, Works with COLORCATCH NANO

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

**In-app purchases:** none


## Frequently asked questions

### Is Knots 3D free?

Knots 3D costs $5.99, with no in-app purchases.

### Is Select 3M free?

Select 3M costs $9.99, with no in-app purchases.

### Which has better reviews, Knots 3D or Select 3M?

Select 3M is rated higher. Knots 3D averages 4.9 out of 5 from 13K ratings, while Select 3M averages 5.0 from 1 ratings.

### Do Knots 3D or Select 3M have ads?

Neither Knots 3D nor Select 3M shows ads.

### Which is updated more often, Knots 3D or Select 3M?

Knots 3D ships an update fortnightly, and Select 3M every 4 months. Most recently, Knots 3D was updated on September 25, 2026 and Select 3M on September 14, 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.*