Case Studies

Explore FiftyFive’s Success Stories

Flutter, OCR APIs, Payment Gateways

Car Rental Platform Development

A cross-platform car rental mobile application supporting booking, identity verification, and payments. The system consolidated rental workflows, integrated OCR-based ID validation, geolocation, notifications, and third-party services, and applied clean architecture with backend services, integrations, and QA across iOS and Android.

Next.js, Flutter, Node.js

Recruitment Platform Development for Sustainability Hiring

Cross-platform recruitment platform supporting green-industry hiring through AI-driven matching and secure workflows. Included web and mobile applications, backend services, integrations for notifications and email, authentication, and QA, enabling structured pipelines, personalized recommendations, and GDPR-aligned data management.

Flutter, Node.js, OpenAI LLM

AI-Based Menstrual Health Management Platform

The mobile application supports menstrual cycle tracking and symptom logging with personalized insights. Work included cross-platform Flutter development, backend services in Node.js, AI-driven recommendations, secure data storage with Firebase, and fraud prevention using Local_Captcha capabilities.

React Native, .NET, PlayByPoints

Bookings, Communication, and Analytics Platform for Padel

The platform supports court bookings, real-time player communication, and AI-based match analytics.

Flutter, C#, Kotlin

Sweden Energy Systems Mobile Applications and Controller Software

Mobile applications and controller software supported ventilation system operations through scheduling, alarms, trend views, and role-based access. The work upgraded core software, strengthened hardware integration, validated connectivity modes, and established QA workflows and CI/CD processes.

Flutter, AI/ML, Blockchain

AI breath monitoring platform

AI-driven wellness platform capturing breath and ECG data via Apple Watch, processing signals in real time, and generating personalized insights. Included mobile frontend, backend data pipelines, AI analysis, blockchain-based data ownership, and secure integrations across devices and services.

Flutter, Solidity, Web3.js

Digital Publishing Platform for Journalist Verification

A blockchain-based digital publishing platform that verifies journalist identities and authenticates articles using smart contracts. The system added gas-free transactions, NFC passport verification, cross-platform mobile and web applications, backend services, blockchain integrations, and secure data handling.