This app provides highly accurate, localized weather forecasts using advanced data analysis and a unique forecast engine. It features volumetric radar, detailed map overlays, and a query terminal for custom data access. Receive alerts for severe weather like hail and rotation.
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August 25, 2026
• Promo codes — got one from a Neptune partner? Enter it when creating your account for extended free access. • Your account screen now shows your trial status with the days remaining. • Reliability improvements to sign-up and subscriptions.
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Neptune ingests global weather models, monitors their predictions against actual events, and uses a proprietary engine to create precise, location-tailored forecasts. It aims to publish its accuracy against the National Weather Service to demonstrate its reliability.
Yes, Neptune offers live 3D volumetric radar data displayed against realistic terrain. You can watch storms develop from the ground up and use tools to examine storm layers at different elevations.
Neptune is ad-free, allowing for an uninterrupted weather viewing experience. The app is free to download and use, with optional in-app purchases available.
Instead of simple probabilities, Neptune displays a confidence band for its forecast fields. This visualizes the agreement between different weather models, giving users insight into the range of possible outcomes.
Neptune provides alerts for nearby hail and rotational activity, utilizing high-resolution live radar data for timely warnings. It also offers a wide range of other data, including astronomy and ocean climate information.
Yes, the built-in query terminal allows you to access historical weather data for your location as far back as available. You can also create custom forecasts based on specific data fields.
Neptune is available on Mac, Apple Watch, iPhone, and iPad, ensuring you can access weather information across your Apple ecosystem.
Neptune offers monthly and yearly subscription plans, both including a one-month free trial. The monthly plan is $12.99, and the yearly plan is $79.99.