# Sailing Knots vs Spinlock Rig

The clearest difference is price: Spinlock Rig at Free against Sailing Knots's $0.99. Spinlock Rig also leads on in-app purchases (none vs 1). Sailing Knots's advantage is iOS requirement (9.0 vs 15.1). On update cadence, ads and device support there is nothing between them.

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

Sailing Knots ships an update every 12 months, Spinlock Rig every 11 months. The most recent releases landed on November 1, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Sailing Knots | Spinlock Rig |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/spinlock-rig-sense/id1002143905/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 11 months** |
| Monetization | — | Free |
| Size | 14 MB | 29 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fission Media Group Inc.](https://appshunter.io/developer/343056410) | [Spinlock Ltd](https://appshunter.io/developer/1023147633) |

## 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 |


### Spinlock Rig

[App page](https://appshunter.io/ios/app/spinlock-rig-sense/id1002143905)

Log and manage sailing rig settings for multiple boats and crew. Easily customize, share, and access your sailing data anytime, anywhere. Offers preloaded settings and import options for various boat classes.

**Highlights:** Log rig settings for multiple boats, Share settings with crew and partners, Intuitive and easy-to-use interface, Preloaded settings for various classes, Customize, duplicate, import, and delete logs, Offline access to stored information

**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 Spinlock Rig free?

Spinlock Rig is free to download, with no in-app purchases.

### Do Sailing Knots or Spinlock Rig have ads?

Neither Sailing Knots nor Spinlock Rig shows ads.

### Which is updated more often, Sailing Knots or Spinlock Rig?

Sailing Knots ships an update every 12 months, and Spinlock Rig every 11 months. Most recently, Sailing Knots was updated on November 1, 2026 and Spinlock Rig on October 5, 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.*