# GRIBview by Theyr — Digital precision weather

> High-resolution, professional-grade weather forecasts for maritime activities, with offline capabilities. (iPhone/iPad app by Theyr ltd.)

- Source: https://appshunter.io/ios/app/gribview-by-theyr/id1012875108 (this page in markdown: same URL + `.md`)
- Developer: [Theyr ltd](https://appshunter.io/developer/1012875107)
- Category: Weather, Navigation
- Price: Free
- Age rating: 4+
- Requires: iOS 11.0 · 250 MB
- Languages: English
- Released: 2015-07-23
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/gribview-by-theyr/id1012875108/reviews.md

## What is GRIBview by Theyr?

Our weather forecasts have been the professional mariners choice for over two decades. Today, the Theyr brand has become synonymous with accuracy.

Using the most advanced weather modelling to produce the most accurate forecasts available today, GRIBview by Theyr provides you with:

- The highest resolution weather forecasts built on super high-precision data from 10km down to 1km resolution on an hourly time step
- Free global forecast data for a highly compressed and very efficient overview of the oncoming weather
- One-click access to unrivalled granular and detailed forecast accuracy for your favourite sailing areas
- GRIB download functionality for further offline use during your maritime activities
- Free offline charts which don't require an Internet connection to view.

Our forecasts are used by many of the world’s best known maritime organisations, businesses and professionals. From the most successful Olympic sailing teams and Americas cup teams to the biggest commercial names in the industry.

Save and name your favourite areas for single click downloads of multiple parameters, view files offline at any time. Visit our home page www.theyr.com for more information.

## Key features

- High-resolution weather forecasts (1km-10km)
- Free global forecast data
- One-click access to favorite sailing areas
- GRIB download for offline use
- Free offline charts

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/gribview-by-theyr/id1012875108/reviews.md

### 1/5 — What happened to indicating "in-app purchases"??

*2016-01-16, version 1.2.1*

The app is not useful unless one subscribes to their data feed.

### 1/5 — Crash

*2015-11-29, version 1.1*

At first it worked now it instantly crashes.

## Frequently asked questions about GRIBview by Theyr

### What is GRIBview's primary function?

GRIBview provides professional-grade, high-resolution weather forecasts trusted by mariners. It offers detailed data down to 1km resolution and allows for GRIB file downloads for offline use.

### Is GRIBview free to use?

Yes, GRIBview is available for free. It offers free global forecast data and free offline charts, making professional weather information accessible without cost.

### Can I use GRIBview without an internet connection?

Yes, GRIBview supports offline use. You can download GRIB files for your favorite sailing areas and view free offline charts without requiring an active internet connection.

### What kind of weather data does GRIBview provide?

GRIBview offers highly accurate, high-resolution weather forecasts with data ranging from 10km down to 1km resolution on an hourly time step. This granular detail is crucial for maritime activities.

### Who uses GRIBview's weather forecasts?

GRIBview's forecasts are used by professional mariners, Olympic sailing teams, America's Cup teams, and major commercial maritime organizations, highlighting its industry-leading accuracy.

### What devices does GRIBview support?

GRIBview is available on iPhone, iPad, iPod, and Mac devices, offering broad compatibility for users across Apple's ecosystem.

### How often is GRIBview updated?

The latest version of GRIBview is 5.6.1, which was last updated on August 25, 2021. This indicates a history of development and maintenance for the application.

### What is the age rating for GRIBview?

GRIBview has an age rating of 4+, making it suitable for a wide audience, including younger users interested in weather information.

## Version history (last 1 release)

### 5.6.1 — 2021-08-25

We have added support for iphone and fixed several issues

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*