# Sailing Knots vs My Custom Fly Box

The clearest difference is price: My Custom Fly Box at Free against Sailing Knots's $0.99. My Custom Fly Box also leads on in-app purchases (none vs 1) and update cadence (weekly vs every 12 months). Sailing Knots's advantage is iOS requirement (9.0 vs 17.5). On ads and device support there is nothing between them.

My Custom Fly Box is free to download; Sailing Knots costs $0.99 up front. Sailing Knots sells 1 one-off in-app purchase. My Custom Fly Box asks for nothing beyond the download.

Sailing Knots ships an update every 12 months, My Custom Fly Box weekly. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Sailing Knots | My Custom Fly Box |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/my-custom-fly-box/id6670184259/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 12 months | **Weekly** |
| Monetization | — | Free |
| Size | 14 MB | 19 MB |
| Requires iOS | **9.0** | 17.5 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Fission Media Group Inc.](https://appshunter.io/developer/343056410) | [Gema Method LLC](https://appshunter.io/developer/1636035814) |

## What reviewers say

### Sailing Knots

[App page](https://appshunter.io/ios/app/sailing-knots/id484613485)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade Sailing Knots to Best Knots | $0.99 | one-time |


### My Custom Fly Box

[App page](https://appshunter.io/ios/app/my-custom-fly-box/id6670184259)

Explore a vast catalog of flies with detailed information on origin, purpose, and effectiveness. Organize your favorite flies into custom boxes tailored to your fishing style and locations. Access tying instructions and videos to improve your skills.

**Highlights:** Extensive fly catalog with details, Customizable fly box organization, Freshwater and saltwater fly filtering, Direct links to tying videos and materials, Smart search and intuitive navigation, High-quality fly images

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sailing Knots free?

Sailing Knots costs $0.99, and also offers in-app purchases.

### Is My Custom Fly Box free?

My Custom Fly Box is free to download, with no in-app purchases.

### Do Sailing Knots or My Custom Fly Box have ads?

Neither Sailing Knots nor My Custom Fly Box shows ads.

### Which is updated more often, Sailing Knots or My Custom Fly Box?

Sailing Knots ships an update every 12 months, and My Custom Fly Box weekly. Most recently, Sailing Knots was updated on November 6, 2026 and My Custom Fly Box on November 4, 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.*