Costly is a behavioral accountability app for iPhone and Mac that connects your focus to real, measurable stakes. This is the official landing page showcasing the app's features, philosophy, and roadmap.
- Scroll-linked animations - Text content follows scroll on desktop
- Responsive design - Optimized for all screen sizes (mobile, tablet, desktop)
- Loading animations - Smooth page load transitions
- Interactive elements - Bouncing buttons and hover effects
- High-resolution assets - Crisp images for all devices
- Hero Section - Main value proposition with animated elements
- Philosophy Section - Dynamic text generation with scroll locking
- About Section - Interactive card system explaining how Costly works
- Roadmap Section - Development timeline with progress indicators
- Contact Section - Icon-based contact options and quick navigation
- Hardware detection - Optimized rendering based on device capabilities
- Smooth scrolling - Custom scroll behaviors and animations
- Icon-based navigation - Clean, modern interface elements
- Waitlist integration - Email collection for early access
- Next.js 15 - React framework with App Router
- TypeScript - Type safety and better development experience
- Tailwind CSS - Utility-first CSS framework
- Liquid Glass UI - Custom design system for minimalistic aesthetics
- Vercel - Hosting and deployment platform
# Install dependencies
npm install
# Run development server
npm run dev
# Build for production
npm run build
# Start production server
npm startCostly is a behavioral accountability app that:
- Connects focus sessions to real financial stakes
- Uses Stripe for secure payment processing
- Implements native iOS app blocking via FamilyControls
- Provides goal-based reward withdrawal system
- Built with Convex, Clerk, and Plaid integration
Contact:
- Email: hello@costly.live
- LinkedIn: xiaojerry
- GitHub: @costly-dev
This project is automatically deployed to Vercel when changes are pushed to the main branch.
Live URLs:
- Primary: https://costly.live
- Vercel: https://itscostly.vercel.app
This project is proprietary software. All rights reserved.