PredictWind Offshore Weather vs Tideglass

The Offshore App allows you to seamlessly download multiple GRIB files for your coastal and offshore passages. Quickly download and view GRIB files, weather routes, GMDSS maps and text forecasts, AIS data and satellite imagery. Access all the world’s top ranking forecast models for reliable and accurate weather data, including ECMWF, SPIRE, UKMO, GFS and more. Our very own PWG & PWE models offer incredible accuracy and a record-breaking 1km resolution. In addition to forecasts, the Offshore App also provides a suite of powerful marine tools to save you time and keep you safe at sea. Weather Routing and Departure Planning is calculated in the PredictWind cloud at the highest resolution. The finished route is then sent back to your boat in an incredibly small file size which is ideal for low bandwidth satellite and SSB connections. The Offshore App works with Wi-Fi, mobile networks, and most satellite connections using an Iridium GO!, Globalstar or Optimizer device. ADDITIONAL FEATURES GRIB file viewer: High resolution forecasts maps with animated streamlines, wind barbs or arrows. Tables: The ultimate dashboard for detailed analysis. Graphs: Compare multiple parameters at the same time. GMDSS Forecasts: View either in the traditional text format or on a map. Destination Spot Forecast: Know exactly what the weather is doing at your destination. Live Observations: Know what’s happening right now out on the water. Ocean Data: See what’s happening under the waves with ocean and tidal currents, and sea temperature. GPS Tracking: Get a free customised GPS tracking page for your blog or website. AIS Data: View over 280,000 vessels worldwide on the AIS network.

Tideglass is a free, offline tide instrument for iPhone and Apple Watch. Designed like a vintage marine chronometer in brass and navy — no ads, no accounts, no internet required. FEATURES ◆ ~8,000 tide stations worldwide, all bundled in the app ◆ Pannable 24-hour chart with a static centre cursor — swipe to scrub ±7 days, with a magnetic snap when you cross "now" ◆ 30-day histogram: every day's maximum high and minimum low as paired bars, with the spring/neap pulse plain to see ◆ 12-month envelope: a smoothed year-at-a-glance view of the highs and lows around your spot ◆ Top-5 tide rankings: see the biggest highs and deepest lows in any visible window ◆ Sunrise, sunset, moon phase, and your nearest station's name at a glance ◆ Mechanical-drum readout for time and water level, with selection haptics as you scrub ◆ Apple Watch standalone — runs without iPhone, same instrument feel on the wrist PRIVACY ◆ Location is read only on device to find your nearest tide station — nothing is transmitted, stored, or shared ◆ No accounts, no analytics, no ads, no tracking DATA Tide harmonics derived from the open OpenWaters database (NOAA + TICON-4). Predictions are sub-hour accurate at most reference stations. Subordinate stations rely on time and height offsets from a parent station. RECREATIONAL USE ONLY. Not for marine navigation. Always consult official hydrographic publications for safety-critical decisions.