e-SIMCompare: Smart Travel Connectivity, Reinvented
A next-generation web platform that lets travelers find, compare, and purchase the best global e-SIM data plans in seconds. Built to ensure you're never disconnected, whether you're a digital nomad, business traveler, or adventurer on the move.
Project Overview
The Vision
At Pristren, we believe travel shouldn't mean being disconnected. That's why we built e-SIMCompare — a next-generation web platform that ensures instant connectivity across 190+ countries with real-time plan comparison from top providers. Whether you're a digital nomad, business traveler, or adventurer on the move, e-SIMCompare delivers AI-driven recommendations that optimize cost, data, and duration, with a localized experience featuring multi-language and regional pricing support. The result? Travelers find the perfect e-SIM in minutes, not hours, save up to 40% on roaming costs, and enjoy smooth, secure, and multilingual access worldwide.
Technical Details
e-SIMCompare is a comprehensive travel connectivity platform that brings together multiple e-SIM providers (Airalo, Holafly, Grameen, Airtel, etc.) to deliver accurate, real-time pricing and plan details across 190+ destinations. The platform features an intelligent comparison engine with smart filtering by country, travel dates, data needs, price, and validity. AI-driven filters highlight top options by cost, data-per-price value, or duration, while the built-in usage guide assists travelers in choosing the right plan based on estimated online activity. The multi-language and multi-currency interface ensures accessibility for global users with regional pricing and automatic exchange rate updates. Built with MERN stack, TypeScript, Tailwind CSS, and Zod for validation, the architecture is responsive, API-driven, and performance-tuned for speed and reliability. This isn't just an app — it's how Pristren is redefining travel connectivity with intelligence, transparency, and care.
Impact & Results
Travelers find the perfect e-SIM in minutes, not hours. Save up to 40% on roaming costs with smooth, secure, and multilingual access worldwide.
How It Works
Travelers select their destination country and travel dates to narrow down available plans
The platform aggregates real-time data from multiple e-SIM providers using API integrations
AI algorithms analyze user requirements and rank plans by cost-effectiveness, data allowance, and validity period
Users compare filtered options side-by-side with automatic currency conversion and regional pricing
After selection, users are redirected to the provider's purchase page with pre-filled information for seamless checkout
Key Features & Capabilities
Instant connectivity across 190+ countries
Real-time plan comparison from top providers (Airalo, Holafly, Grameen, Airtel)
AI-driven recommendations optimizing cost, data, and duration
Localized experience with multi-language and regional pricing
Seamless integration with fast, real-time updates
Responsive, API-driven architecture for speed and reliability
Challenges & Solutions
Challenges
- •Aggregating real-time data from multiple provider APIs with different formats
- •Ensuring accurate currency conversion and regional pricing
- •Managing API rate limits while maintaining fast response times
- •Providing intelligent recommendations without user account data
Solutions
- ✓Built unified data transformation layer with Zod validation for all provider APIs
- ✓Implemented caching strategy with automatic exchange rate updates
- ✓Used Redis for rate limiting and request queuing across providers
- ✓Developed stateless AI recommendation engine based on usage patterns
Technology Stack
Built with a modern technology stack designed for performance, scalability, and maintainability.