
PropTech MVP Built in 6 Months, Client Raised €2.2M
We built Breeze — a real estate marketplace with smart matching algorithms, multi-platform integration, and geodata optimization that reduced API costs by 2x-5x. The client successfully raised €2.2M seed funding after launching the MVP we delivered in 6 months.
Geodata APIs can be expensive at scale. We engineered a caching and prediction system that cut API costs by up to 5x while making the app 40% faster.
🎯The Challenge
Finding apartments in Germany's competitive rental market is notoriously difficult. Tenants spend weeks searching across fragmented platforms, while landlords struggle to manage listings across multiple sites and filter through hundreds of unqualified inquiries.
Breeze needed to build a revolutionary platform that would streamline this process with smart matching algorithms, but faced a critical technical challenge: geodata APIs (for distances, points of interest, and travel time) were expensive and slow — each user request would multiply costs exponentially as the platform scaled.
💡Our Solution
We built native iOS and Android apps using our mobile app development expertise with React Native, alongside a responsive web platform. The dual-role system allows users to operate as tenants or landlords seamlessly.
To solve the geodata cost problem, we engineered smart caching strategies, batched API requests from 7 to 1 per apartment, introduced a map grid clustering concept, and built a prediction algorithm that calculates transportation time with 10-15% accuracy in just 50ms — compared to 7 seconds without optimization. This reduced API bills by 2x-5x while improving app performance by 40%.
About the Client
Breeze
Breeze is a Berlin-based PropTech startup revolutionizing Germany's rental market with a smart platform that connects tenants and landlords efficiently.
Operating across 100+ German cities with expansion planned for Austria and Switzerland, Breeze combines smart matching algorithms with map-based search and integrated instant messaging. Learn more about our MVP development approach for startups.
By the Numbers
- €2.2M RaisedSeed funding after MVP launch
- 100+ CitiesCoverage across Germany
- 6 MonthsMVP development time
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Transformation Overview
Traditional Process
Digital Solution

Key Features Delivered
A comprehensive PropTech platform combining smart matching algorithms, geodata optimization, and powerful search features for Germany's rental market.
Smart Matching Algorithm
Advanced algorithm matches tenant preferences with property features, scoring compatibility and surfacing best matches first based on location, budget, amenities, and lifestyle requirements.
Smart Location Search
Map-based discovery with custom radius settings, POI proximity analysis (schools, public transit, shopping centers), and accurate commute time calculations to workplace or preferred destinations.
Integrated Messaging
Real-time chat between tenants and landlords with automated responses, document sharing capabilities, viewing request scheduling, and application status tracking—all within the app.
Landlord Analytics Dashboard
Comprehensive performance tracking with listing view metrics, applicant quality scores, response rate analysis, market positioning insights, and competitive pricing recommendations.
Intelligent Notifications
Smart push alerts for new property matches, viewing requests, application status updates, price drops on saved properties, and emerging market opportunities tailored to user preferences.
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Application Process Flow
Discovery & Planning
Defined dual-role system architecture and API optimization strategy
We conducted comprehensive discovery workshops with the Breeze team to understand the German rental market dynamics, user personas (tenants vs landlords), and technical challenges. Mapped out the dual-role system architecture where users can switch between tenant and landlord modes seamlessly, and identified the geodata API cost problem as a critical optimization target.
Native Mobile Development
Built iOS and Android apps with React Native for fast time-to-market
Developed native mobile applications using React Native to share code across iOS and Android while maintaining native performance. Implemented map-based property search, instant messaging, user profiles, and push notifications. The cross-platform approach reduced development time by 40% compared to native iOS and Android separately.
Geodata Optimization
Engineered smart caching and prediction algorithms to reduce API costs
Built a sophisticated geodata optimization system including: request batching to reduce 7 calls to 1 per apartment, map grid clustering to group nearby requests, intelligent caching layer, and a custom prediction algorithm for transportation time that achieves 10-15% accuracy in just 50ms. This reduced third-party API costs by 2x-5x while improving performance by 40%.
Multi-Platform Integration
Connected with ImmoScout24, eBay Kleinanzeigen, and other German platforms
Integrated with APIs of major German real estate platforms to enable automatic listing distribution. Landlords can post once on Breeze and have their property appear on ImmoScout24, eBay Kleinanzeigen, ImmoWelt, and other sites simultaneously. Built synchronization logic to handle updates, deletions, and applicant tracking across platforms.
Launch & Funding Success
Platform launched and client raised €2.2M seed funding
Successfully launched iOS and Android apps on App Store and Google Play. The platform quickly gained traction with 20,000+ daily active tenants and 1,000+ apartments listed daily. The technical excellence and market validation helped Breeze raise €2.2M in seed funding in April 2023, validating the product-market fit and our development approach.
Technology Stack
We selected proven technologies optimized for cross-platform mobile development, scalable backend infrastructure, and cost-effective geodata operations. React Native enabled us to build iOS and Android apps from a single codebase, while our custom caching layer dramatically reduced third-party API expenses.
Technologies
React Native
React
Node.js
PostgreSQL
AWS
NGINX
FaQ

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Real Estate Marketplace Development Timeline
Discovery & Architecture
Technical audit, no commitmentMVP Launch
Core features and user testingFull Platform
Mobile apps, optimization, scale
Oleg Kalyta
Founder & AI Lead