Automotive
Australia
4 Months
Agile
5 Experts

Objective

While building CarnaWash, following were our key objectives.

Make it stupidly easy

Register and book a wash in under 30 seconds.

Build a payment system so smooth

users forget it exists.

Grow Without Hiccups

An app that scales from 10 to 10,000 users without breaking a sweat.

Solid Feedback Loop

Customers can give their feedback through the same app to improve the service.

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Challenges

The challenges were too many since building it wasn’t just about coding, it was also about changing habits of users. Here are the challenges we faced:

Car wash customers usually need to wait in long queues. Apart from that they often need to handle cash payments, and bear with inconsistent service quality.

Instead of traditional manual onsite operation, the car wash industry needed an app-driven system that could offer contactless payments, location-based access, and an intuitive customer experience.

Integrating the app with multiple car wash locations across Australia required seamless communication between backend systems, payment gateways, and on-site hardware.

The transition from a traditional car wash model to a subscription-based, fully automated, onsite system demanded a highly scalable infrastructure that could handle growing user demand while minimising operational challenges.

Getting customers used to waterless, onsite car washing.

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Our Solution

We tackled these challenges carefully and creatively, and created the following solutions.

With the CarnaWash app, users can quickly schedule a car wash service at their preferred time and location, eliminating the need for physical visits and reducing wait times

CarnaWash app boasts an intuitive design, making it easy for users to select services, schedule appointments, and manage payments without any hassle

CarnaWash app integrates secure, contactless payment options, allowing customers to pay digitally within the app.

Built a simple rating system to register your complaints and feedback.

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Solution Design

We built the app with strong foundations, room to expand, and plenty of testing with real users.

Project Specs & Design

  • Developed high-fidelity prototypes in Figma and validated usability with a focus group of non-technical users to ensure universal accessibility.
  • Prioritised intuitive UI/UX design with large touchpoints and minimal navigation layers to accommodate diverse user environments.

Backend & Infrastructure

  • Implemented Node.js for backend development to support high concurrency during peak usage periods.
  • Deployed AWS auto-scaling infrastructure to dynamically adjust resources based on real-time demand.

Mobile App Development

  • Engineered a cross-platform application using Flutter to maintain feature parity and performance across iOS and Android.
  • Integrated offline functionality via local storage to ensure uninterrupted service in low-connectivity scenarios.

QA & Testing

  • Conducted rigorous load testing with 500+ simulated users to validate system stability under peak traffic conditions.
  • Performed environmental stress testing across extreme temperature ranges to guarantee hardware-software compatibility.

Deployment & Training

  • Delivered streamlined video training modules to onboard car wash operators, reducing onboarding time by 65%.
  • Established a dedicated support line during launch to resolve operational issues, resulting in fewer than 15 critical tickets.

Benefits

The results? We made CarnaWash so successful that it became the No. 1 car wash app in Australia. Here are the benefits that stand out.

No more queues

Users spend less time waiting than it takes to microwave leftovers.

Happy customers

Ratings jumped 4.8/5 after we added “Wash Again?” one-tap rebooking.

Seamless Payment Experience

Subscriptions reduced payment errors by 70% and became handy for the guy who keeps forgetting his wallet.

Real-time Monitoring

Real-time dashboards show which bays earn their keep and which need a kick in the gears.

Consistency

The app can handle any vehicle in any condition without a groan.

Technology Stack

For CarnaWash, we utilized Flutter and Angular for a seamless and responsive frontend, while Node.js powered the backend for efficient service handling. Stripe was integrated for secure payment processing, and Google Maps API enhanced location-based services. MySQL ensured reliable data management, while AWS EC2 provided scalable deployment. Additionally, Figma streamlined the design process for a polished user experience.