Unattended payments at the bay
- Contactless tap and swipe at every bay, fast enough that nobody reaches for quarters
- Redeems promotions on-screen, with a QR code to join a subscription in the app
Self-serve car wash · retrofit
Modernize self-serve payments without rebuilding the wash.
Retrofit existing self-serve equipment with Rain Pay terminals, Stormbox controllers, and MonsoonOS software: unattended payments, remote starts, subscriptions, app workflows, and operator reporting.
Book a 20-minute demo
Leave your details and how many bays you run. We will call or email to set a time.
Designed for retrofit environments · compatible timers and relay-based bays
Upgrade payments, keep your equipment.
Your bays, timers, and plumbing stay. Rain Pay replaces or supplements coin-op and legacy readers, and one platform runs your bays, vacuums, and vending.
Every site and machine is different. We look at your equipment and recommend a retrofit path only where it is a practical fit.
Three parts, one system.
Retrofit control
- Connects payment and app workflows to compatible timers and relay-based bays
- Starts and stops compatible equipment through authorized workflows
Operator visibility
- Pricing, sessions, customers, and revenue reporting in one place
- Memberships and subscriptions billed to a saved card
- Optional app and customer accounts on top of walk-up card payments
- Several self-serve sites from one admin, with per-location reporting
Self-serve car wash FAQs.
Do I have to replace my timers?
Not necessarily. Stormbox controllers are designed for retrofit environments and connect to compatible timers and relay-based workflows. Whether your specific timer is a fit is evaluated before any quote.
Can this work with older equipment?
Often, where the equipment can be started through a control signal. We confirm it for your site during discovery.
Can this support vacuums?
Yes. Operators run Rain Pay at vacuum stations alongside self-serve bays on the same platform.
Can I manage multiple sites?
Yes. MonsoonOS supports multi-location operations with per-location reporting and employee access, so you can manage several self-serve sites from one admin.
Can I still support walk-up customers?
Yes. Rain Pay terminals take card and app payments at the bay with no app download required, so walk-up customers can pay and start a wash directly.
Book a 20-minute demo.
Tell us about your bays, timers, and current payment setup. We review your site details before the call so the demo fits your operation.