# Spinlock Rig vs NSJ Tracker

The clearest difference is update cadence: NSJ Tracker at every 6 days against Spinlock Rig's every 11 months. Spinlock Rig's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.6). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Spinlock Rig ships an update every 11 months, NSJ Tracker every 6 days. The most recent releases landed on October 5, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Spinlock Rig | NSJ Tracker |
| --- | --- | --- |
| Price | Free | 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 | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 6 days** |
| Monetization | Free | — |
| Size | 29 MB | 0 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Spinlock Ltd](https://appshunter.io/developer/1023147633) | [Keita Yukinori](https://appshunter.io/developer/6783640543) |

## What reviewers say

### 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


### NSJ Tracker

[App page](https://appshunter.io/ios/app/nsj-tracker/id6783640541)

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

**In-app purchases:** none


## Frequently asked questions

### Is Spinlock Rig free?

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

### Is NSJ Tracker free?

NSJ Tracker is free to download, with no in-app purchases.

### Do Spinlock Rig or NSJ Tracker have ads?

Neither Spinlock Rig nor NSJ Tracker shows ads.

### Which is updated more often, Spinlock Rig or NSJ Tracker?

Spinlock Rig ships an update every 11 months, and NSJ Tracker every 6 days. Most recently, Spinlock Rig was updated on October 5, 2026 and NSJ Tracker on October 2, 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.*