# Sea Current Measure Tool vs Sail Scan

The clearest difference is price: Sail Scan at Free against Sea Current Measure Tool's $19.99. Sail Scan also leads on update cadence (daily vs every 3 months) and iOS requirement (15.1 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Sail Scan is free to download; Sea Current Measure Tool costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sea Current Measure Tool ships an update every 3 months, Sail Scan daily. The most recent releases landed on September 19, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Sea Current Measure Tool | Sail Scan |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sea-current-measure-tool/id6448216978/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Daily** |
| Monetization | Paid | — |
| Size | 15 MB | 30 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Master Sailing jdoo](https://appshunter.io/developer/1680451361) | [Nate McGuire](https://appshunter.io/developer/1132862136) |

## What reviewers say

### Sea Current Measure Tool

[App page](https://appshunter.io/ios/app/sea-current-measure-tool/id6448216978)

This tool helps sailors and coaches measure sea current speed and direction directly on the water using an iPhone. It's designed for race preparation and training, using GPS data to calculate water movement from a floating object.

**Highlights:** Measure sea current speed and direction, GPS-based current calculation, Simple start and stop measurement, Store and review measurements, Display measurements on map, Useful for race preparation and training

**Features:** Vision Pro support

**In-app purchases:** none


### Sail Scan

[App page](https://appshunter.io/ios/app/sail-scan/id6762089009)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sea Current Measure Tool free?

Sea Current Measure Tool costs $19.99, with no in-app purchases.

### Is Sail Scan free?

Sail Scan is free to download, with no in-app purchases.

### Do Sea Current Measure Tool or Sail Scan have ads?

Neither Sea Current Measure Tool nor Sail Scan shows ads.

### Which is updated more often, Sea Current Measure Tool or Sail Scan?

Sea Current Measure Tool ships an update every 3 months, and Sail Scan daily. Most recently, Sea Current Measure Tool was updated on September 19, 2026 and Sail Scan on September 11, 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.*