Plan and simulate your rainwater systems. Calculate appropriate sizing based on local precipitation and your roof or surface dimensions and condition.
RainPlan is your smart tool for designing and understanding rainwater collection systems for your home, garden, or property.
Rain is a valuable resource that often goes to waste. By capturing and storing it, you can improve water security, reduce stormwater runoff, and build resilience into your living spaces. Whether you’re designing a new system or upgrading an existing one, RainPlan helps you plan every step.
Features
- Map catchment areas such as roofs or paved surfaces. Automatically calculate area and estimate potential rainwater volume.
- Link cisterns to catchments to model water collection, storage capacity, and optional overflow or passive release.
- Add water uses (like irrigation or household needs) to simulate daily or seasonal demand and track performance.
- See your project at a glance with clear data visualizations and simple design tools.
- Start free with one project.
RainPlan+ (one-time purchase)
Unlock local historical precipitation data to simulate how your system performs across different weather patterns.
- Access up to 2 years of rainfall history.
- Create up to 5 projects.
RainPlan Pro (subscription)
For professionals designing or installing systems for clients:
- Simulate with up to 5 years of rainfall history.
- Create unlimited projects for multiple sites.
- Perfect for rainwater harvesting designers, landscape planners, and stormwater consultants.
RainPlan makes it simple to plan, size, and optimize your rainwater collection systems using real data from your location.
Capture the rain. Plan with confidence.