Pick the driest time to head out: compare three possible start times side by side using the same official hourly forecast.
Window Compare places three possible start times side by side using the same official hourly forecast. See the highest hourly rain probability, coverage and alert availability before choosing a plan.
HOW TO USE THE UPGRADE
1. Select a location and open Rain Window → Compare windows.
2. Choose the duration and start-time spacing. Review all three windows from the same NWS forecast snapshot.
3. Inspect coverage and timestamps. A lower-peak candidate is identified only when all three windows have complete, fresh data.
4. Freeze and share a report with source, time, hourly evidence and availability limits.
Animated radar, saved locations, Rain Window, timeline controls, map tools and the offline field guide remain available.
WHAT TO KNOW
Official hourly comparisons cover supported US locations and need network access. The highest hourly precipitation probability is not a combined probability for the outing. Missing, partial, stale or future-dated data prevents a preferred-window result. Ties remain ties. An unavailable alert response is not no alerts. Radar observations apply to near-now windows only, and provider data may be delayed or unavailable.
iPhone and iPad. No account required.
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
A clearer App Store name and search details. No other changes in this update.
Version 4.0.1
The developer, Robert Corbin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Robert Corbin
Size
40.2 MB
Category
Weather
Compatibility
Requires iOS 17.0 or later.
iPhone Requires iOS 17.0 or later.
iPad Requires iPadOS 17.0 or later.
Mac Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.