# WeatherTrack GRIB vs SailFlow

The clearest difference is price: SailFlow at Free against WeatherTrack GRIB's $9.99. SailFlow also leads on ratings volume (5.9K vs 161). On rating, review sentiment, update cadence and ads there is nothing between them.

SailFlow is free to download; WeatherTrack GRIB costs $9.99 up front. WeatherTrack GRIB sells 10 in-app purchases, starting at $2.99 per 7 days and SailFlow sells 10 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for WeatherTrack GRIB against 4.7 for SailFlow. That said, the two scores are not equally well evidenced: SailFlow has 5.9K ratings behind it against 161, so its average is the more settled of the two. Written reviews are what separate them: 89% of WeatherTrack GRIB's written reviews are positive against 84% of SailFlow's.

WeatherTrack GRIB ships an update every 6 weeks, SailFlow every 3 weeks. Both last shipped on November 10, 2026.

## The numbers

| Metric | WeatherTrack GRIB | SailFlow |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [4.7 (161 ratings)](https://appshunter.io/ios/app/weathertrack-grib/id417401887/reviews) | **[4.7 (5.9K ratings)](https://appshunter.io/ios/app/sailflow-sailing-forecasts/id555309964/reviews)** |
| Number of ratings | 161 | **5.9K** |
| Positive reviews | **89.4% of reviews** | 84.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #106 | **#39** |
| Size | 131 MB | 137 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod, Mac | iPhone, iPad, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Best Search Infobrokerage, Inc](https://appshunter.io/developer/417401890) | [WeatherFlow](https://appshunter.io/developer/317992028) |

## What reviewers say

### WeatherTrack GRIB

[App page](https://appshunter.io/ios/app/weathertrack-grib/id417401887)

**Currently charting:** #106 Top Paid · Weather (US App Store)

Access detailed worldwide weather data, including wind, waves, and currents, with offline capabilities. Plan routes and visualize forecasts with customizable maps and meteograms. Ideal for professionals and amateurs needing precise meteorological information.

**Highlights:** Worldwide GRIB data viewer, Offline map and forecast access, Detailed weather layers (wind, waves, currents), Route planning and meteograms, GRIB file import/export, Animation and sharing options

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GRIB Robot | $2.99 | per 7 days |
| GRIB Robot | $5.99 | per month |
| Tidetech Currents | $7.99 | per month |
| GRIB Robot | $15.99 | per 3 months |
| Tidetech Currents | $34.99 | per 6 months |
| Tidetech Currents | $46.99 | per year |
| Offline High Resolution Map | Free | one-time |
| Advanced Local Forecast | $0.99 | one-time |
| MeteoPlus | $2.99 | one-time |
| Route Weather | $5.99 | one-time |


### SailFlow

[App page](https://appshunter.io/ios/app/sailflow-sailing-forecasts/id555309964)

**Currently charting:** #39 Top Grossing · Weather (US App Store)

Get hyper-accurate, real-time marine weather forecasts and live wind reports. This app uses proprietary weather systems and integrates public data for detailed wind, wave, tide, and radar information. Customize alerts and track your favorite sailing spots.

**Highlights:** Proprietary Tempest Weather Systems, Live wind and current station reports, AI-enhanced Nearcast forecasting, Radar, satellite, and precipitation maps, Tides charts and wave height, Customizable wind notifications, Nautical charts

**Features:** macOS Compatibility, Siri integration, Apple Watch app, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus | $3.99 | per month |
| Plus | $5.49 | per month |
| Gold | $14.99 | per month |
| Pro | $14.99 | per month |
| Pro - Pay As You Go (auto-renewing) | $19.99 | per month |
| Gold | $21.99 | per month |
| Plus | $44.99 | per year |
| Plus | $44.99 | per year |
| Pro | $119.99 | per year |
| Gold | $179.99 | per year |

**What reviewers like**

- 🚀 Easy to navigate
- 🚀 Accurate wind forecasts
- 🚀 Helpful for planning
- 🚀 Great data and graphics
- 🚀 Reliable and trustworthy

**What reviewers complain about**

- 🐛 Occasional inaccurate forecasts
- 🐛 Crashes or freezes
- 💰 Expensive subscription
- 🔍 Difficult to find specific locations
- 🔍 Confusing interface at times

**Reported bugs**

- Recent update caused app to crash
- Favorites list not working properly
- Wind direction arrow pointing incorrectly

**Requested features**

- Add more local weather stations
- Improve map and location search
- Provide more forecast models
- Add support for Apple Watch
- Fix wind direction arrow issue


## Frequently asked questions

### Is WeatherTrack GRIB free?

WeatherTrack GRIB costs $9.99, and also offers in-app purchases.

### Is SailFlow free?

SailFlow is free to download, with in-app purchases available.

### Which has better reviews, WeatherTrack GRIB or SailFlow?

SailFlow is rated higher. WeatherTrack GRIB averages 4.7 out of 5 from 161 ratings, while SailFlow averages 4.7 from 5.9K ratings.

### Do WeatherTrack GRIB or SailFlow have ads?

Neither WeatherTrack GRIB nor SailFlow shows ads.

### Which is updated more often, WeatherTrack GRIB or SailFlow?

WeatherTrack GRIB ships an update every 6 weeks, and SailFlow every 3 weeks. Most recently, WeatherTrack GRIB was updated on November 10, 2026 and SailFlow on November 10, 2026.

### Which is more popular, WeatherTrack GRIB or SailFlow?

WeatherTrack GRIB currently peaks at #106 in the App Store charts, and SailFlow at #39. Chart position reflects recent download velocity rather than total install base.

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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.*