Neptune Weather
Live 3D radar & storm alerts
Free · In‑App Purchases
A proprietary self correcting forecast. Volumetric, high resolution radar. Simplistic design that still serves the weather enthusiast. The next generation of weather app.
Neptune has been built from the ground up to provide the most accurate and local weather forecast possible. It maintains simplicity without sacrificing the details that make a weather application useful. Neptune ingests a wide variety of raw weather models from around the world and monitors their forecasts against what actually happens. Neptune's forecast engine creates a precise prediction tailored to your location, and it’s designed to learn and get better over time. After a few days of forecasting and observing, Neptune will publish its accuracy against the National Weather Service to prove it's worth.
VOLUMETRIC RADAR
Neptune ingests raw volumetric radar data from the leading, most up-to-date sources and displays it against true to life terrain. Watch a timelapse of storms growing from the ground up and use Neptune's radar tools to cut apart layers of the storms at different elevations. Neptune offers both high resolution raw radar data, and pre-filtered radar data. Neptune also offer's HRRR and GFS data all built into the maps functionality for extended visual forecasts and analysis.
MAPS AND OVERLAYS
In addition to radar, Neptune offers temperature, precipitation, dynamic wind, lightning, and cloud overlays. The underlying map was custom built from the ground up to show detailed terrain features and elevation changes. This allows storms to be displayed at real scale against perfectly recreated mountains and ravines.
FORECAST CONFIDENCE
Instead of showing you an arbitrary probability, Neptune publishes a confidence band for its forecast fields to display the agreement between the models it ingests. This allows you to visualize model convergence and divergence and get a feel for the true range of possibilities being predicted. Neptune automatically tunes its final prediction; however, it also aims to be transparent enough to show its work.
BUILT-IN QUERY TERMINAL
If interacting with a UI isn’t your style, or you prefer to have data in a custom format, Neptune provides a query terminal with its own built in query language to access its weather data. The syntax is easy to learn and suggestions are provided for you; however, you can also query in plain text using Apple’s on device LLM to translate it into a weather query and interpret the output. Query historical data as far back as the data goes for your location or put together custom forecasts based on only the fields that you want. You can create preset commands to quickly run a query that you find useful.
HAIL AND ROTATION ALERTS
Neptune uses leading data sources to warn you of any nearby hail or rotational activity. It monitors the live, high resolution radar in your area to be as accurate as possible and increase its chances of providing plenty of reaction time.
AND A TON MORE
-Astronomy and solar storm data
-U.S. Army Core of Engineer reservoir data
-Tide, wave, and ocean climate data
-Seasonal forecasts
-Detailed historical analysis
-Fully customizable
ONGOING SUPPORT AND INNOVATION
Neptune is a brand new weather application and this is just the beginning. Our team is dedicated to providing ongoing, meaningful updates to Neptune for the foreseeable future. Stay tuned for what’s to come!
OUR COMMITMENT TO TRUE PRIVACY AND CUSTOMER SATISFACTION
Unlike other weather applications, Neptune will never sell or distribute ANY of your data. For more details, see our privacy policy below.
Neptune requires a subscription after a one-month free trial.
Neptune Monthly: $12.99/month
Neptune Yearly: $79.99/year
Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless turned off at least 24 hours before the end of the current period. Manage or cancel in your Apple Account settings after purchase. Any unused portion of a free trial is forfeited when a subscription is purchased.
Privacy Policy: https://neptuneweather.io/privacy.html
Terms of Use: https://neptuneweather.io/terms.html
• 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.
The developer, Aleph Collective LLC, 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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Aleph Collective LLC
- Size
- 10.3 MB
- Category
- Weather
- Compatibility
Requires iOS 26.5 or later.
- iPhone
Requires iOS 26.5 or later. - iPad
Requires iPadOS 26.5 or later. - Mac
Requires macOS 26.5 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.5 or later. - Apple Watch
Requires watchOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Neptune Monthly $9.99
- Neptune Yearly $59.99
- Copyright
- © 2026 Aleph Collective LLC