Rainwater App
Rainwater App is the smart rainwater harvesting and tank monitoring app that shows you real-time tank levels, satellite-driven rainfall forecasts, and helps reduce sewage overflows.
10x more detailed than typical weather apps
No smoothing, no averaging so you can spot narrow gaps other apps miss.
Rainwater App 100m Radar Resolution
1km Radar Resolution
Latest Releases
May 2026
A new premium layer shows total rainfall over the past 1, 3, 12, 24, or 48 hours. Tap any spot on the map for the exact amount. Built from weather radar only - measured, not forecast.
Learn more
Apr 2026
At your saved locations, freshness shows at a glance - green, yellow, or red. Tap any spot on the map to see the exact minute it was last scanned. 1200+ radars worldwide, and no other weather app is honest enough to show you this.
Learn moreWhen every drop matters, so does every pixel.
You get a granular, real-time view you can actually act on.
Raw data from professional weather radars worldwide. No third-party feeds, no reprocessed sources. The same radar output meteorologists work with, at original quality.
1200+ data sourcesWe stitch hundreds of radar images into one map at up to 100-meter resolution. You see precipitation down to individual streets, not just a general rain zone across your city.
100m resolutionRadar servers are polled every 2-5 minutes. Other apps often update every 30 minutes or less frequently. In fast-moving storm conditions, that gap may change everything.
2-5 min update speedSet alerts by location, precipitation type and intensity. Official national weather warnings included. Custom thresholds, multiple locations, no unwanted notifications.
Noise-freeRainwater Intelligence
Rainwater App connects weather radar data to your rainwater tank so you can monitor levels in real time, make informed water-use decisions, and help reduce sewage overflows.
Track your rainwater tank levels live through the app. See current volume, refill history, and get alerts when a storm is expected to top you up or when reserves are running low.
Our satellite-driven rainfall estimates give you an accurate picture of how much water is heading your way. Combine radar nowcast with tank intelligence to plan every drop.
Every litre of rainwater you use for irrigation, flushing, or washing is a litre that stays out of the stormwater system. Smarter rainwater management helps prevent overflows and eases pressure on community infrastructure.
More About Radar
Our own short-term forecast based on radar data. Updates every 10 minutes for accurate near-future rain tracking.
Tap anywhere on the map to get instant access to layer-specific data for the selected location.
See where rain is moving with static arrows - perfect when animations lag or connection is slow.
See how much rain has fallen over the past 1 to 48 hours. Tap any spot for the exact amount.
Pick from multiple radar color palettes. From classic blue to vivid storm visuals - your map, your style.
Review radar from the past 48 hours. Track how storms evolved and where they came from.
Rainwater App collects radar data from 90+ countries. One of the widest radar networks worldwide.
How it works
The interface is intentionally fast to read. You should know what to do before the rain arrives.
See the latest radar picture with a live overview of rain, dry gaps, and movement.
Tap any location to inspect nowcast, freshness, totals, and motion direction at street level.
Leave early, wait it out, or reroute. The goal is the same: avoid getting surprised by five-minute rain.
Use cases
Leave five minutes earlier or later based on the real gap in the storm.
See whether the rain is arriving before pickup or clearing before you head out.
Track events, walks, and errands with a view that shows the short-lived dry window.
Check where storms are moving across routes, not just what the forecast said hours ago.
Privacy, no trade-offs
It is never stored or sold.
FAQ
If you want a free rainfall app with radar-first tracking, Rainwater App is a strong choice. This rain app shows live rain movement, gaps, and nowcast detail so you can make faster decisions.
Rainwater App is built for rain-first planning. This rain app focuses on radar detail, near-term movement, and exact location visibility instead of only broad forecast summaries.
Rainwater App is a strong option for rain forecast checks because it combines radar nowcast, short-term movement, and detailed map layers to show what is likely to happen next.
Yes, Rainmeter is free software, but it is a desktop customization tool for Windows rather than a rainfall forecast app. If you want weather radar and rain tracking, Rainwater App is the relevant rain app.
Rainwater App is a smart rainwater harvesting and tank monitoring app that helps you track your rainwater tank levels in real time. It uses satellite-driven rainfall data to forecast when your tank will refill and helps you reduce sewage overflows by making smarter use of stored rainwater.
Yes, Rainwater App is designed specifically for monitoring rainwater tank levels in real time. The app connects weather radar and satellite rainfall data to your tank so you can see current volume, track refill history, and get alerts when a storm is expected to top you up or when reserves are running low.
Satellite rainfall estimates give you an accurate picture of how much water is heading your way, even in areas without ground-based weather stations. Rainwater App combines satellite data with radar nowcast to predict tank refill events, so you can plan irrigation, conserve water during dry spells, and make informed decisions about your rainwater harvesting system.
Yes. Every litre of rainwater you use for irrigation, toilet flushing, or outdoor cleaning is a litre that stays out of the stormwater system. Rainwater App helps you monitor your tank levels and optimise your rainwater usage, reducing the burden on community drainage infrastructure and helping prevent sewage overflow events.
Rainwater App offers a free version with core features including real-time tank monitoring and radar access. Premium subscriptions unlock additional features such as advanced satellite data layers, extended historical insights, and custom alert thresholds. You can download the app for free from Google Play or the App Store.
Get the app
Download Rainwater App and get the radar detail, freshness, and near-future motion you need to decide with confidence.
Trusted. Rated. Loved.
2M+
4M+
gives me a heads up before a storm hits so I know to get my cats inside and cover my windshield from trees and branches etc. great app. even free version but the quarterly subscription is well worth it.
Great weather app. It does its job well. Obviously, the paid plan has more options and is more valuable. But the free one is very functional.
It shows very precisely.. Once it even showed a forming storm cell and a moment later the storm appeared
Great app for weather forecasting! I've had it for a while now and have already recommended it to friends! I open the app almost every day to check the weather forecast!
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About Us
We geek about radar detail and understanding how precipitation actually behaves.
We built Rainwater App for ourselves first, trusting that others who care about the same details will feel at home.
Make radar data usable for everyday weather navigation. An unexpected five-minute shower can ruin a day: the commute you timed perfectly, the meeting you can't show up soaked to, the one small errand you needed to get right.
We want to help people juggling tight schedules navigate their day with a little more peace and confidence.
What is Rainwater App
Rainwater App is the all-in-one rainwater harvesting app designed for homeowners, gardeners, and property managers who want to make the most of every drop. Unlike basic rainfall radar tools, Rainwater App connects live weather data directly to your rainwater tank monitoring needs. You can view your tank levels in real time, understand how much rainwater you have stored, and plan your usage accordingly.
What makes Rainwater App different from other rainwater management apps is our use of satellite-driven rainfall estimates. While most apps simply show you a weather radar map, Rainwater App processes that data alongside your tank's capacity and historical refill patterns to give you actionable insights. You will know when a storm is likely to refill your tank and when you need to conserve water.
Rainwater App also helps reduce sewage overflows in your community. By using stored rainwater for irrigation, toilet flushing, and outdoor cleaning, every litre you draw from your tank is a litre that does not enter the stormwater system. When more households adopt smart rainwater tank monitoring, the collective impact on urban drainage infrastructure is significant. Fewer overflows mean cleaner rivers, reduced flood risk, and lower water treatment costs for everyone.
Whether you are new to rainwater harvesting or managing a large-scale collection system, Rainwater App gives you the tools to monitor, predict, and optimise your water usage. Download the Rainwater App today and take control of your rainwater harvesting system.