Case study · Cryptocurrency Exchange Platform

Koyn

A modern cryptocurrency exchange platform for selling digital assets with instant Naira settlements.

Product showcaseLive system
Koyn crypto wallet app held on a smartphone

Project overview

Cryptocurrency Exchange Platform

A modern cryptocurrency exchange platform enabling users to sell digital assets, receive instant Naira settlements, manage utility payments, and enjoy a fast, secure trading experience across mobile and web.

Android & iOS ApplicationsResponsive Web PlatformLanding WebsiteAdmin & Sub-admin Dashboards

At a glance

Project snapshot

The product, platforms, market, and engineering responsibility behind the engagement.

MetricDetails
IndustryFinTech
Product TypeCryptocurrency Exchange Platform
StatusLive
Launch Year2023
MarketNigeria
Google Play Downloads10K+
Google Play Rating⭐ 4.0/5 (1.1K+ reviews)
Apple App StoreAvailable on iPhone & iPad
App Store RatingPublic listing available (rating varies by storefront)
Platforms DeliveredAndroid • iOS • Web
Product EcosystemMobile App • Responsive Web Platform • Landing Website • Admin Dashboard • Sub-admin Dashboard
Abango's RoleFull-Stack Engineering (Frontend & Backend), Product Development

Google Play publicly displays download counts, ratings and review totals. Apple publishes the app listing but does not publicly provide download figures, and ratings may vary by country storefront.

Delivery detail

Scope and engineering impact

SCOPE / 01

Engineering delivered

  • Android & iOS Applications
  • Responsive Web Platform
  • Landing Website
  • Admin & Sub-admin Dashboards
  • Frontend & Backend Engineering
  • API Integrations
  • Wallet Infrastructure & Continuous Product Enhancements
SCOPE / 02

Product capabilities

  • Cryptocurrency Trading
  • Crypto Wallet & Instant Withdrawals
  • Crypto-to-Naira Conversion
  • Airtime, Data & Utility Payments
  • Multi-Asset Digital Currency Support
  • KYC & User Authentication
  • Referral & Rewards
  • Transaction Management
  • Push Notifications & Customer Support
SCOPE / 03

Project highlights

  • 10K+ Android Downloads
  • 1.1K+ Google Play Reviews
  • Available on Android, iOS & Web
  • Supports major cryptocurrencies including Bitcoin, Ethereum, USDT, USDC, BNB, Solana & Litecoin
  • Automated wallet funding with instant crypto-to-Naira settlements
  • Integrated airtime, data, TV, and electricity bill payments
  • Built with enterprise-grade security, KYC, and administrative controls
  • Demonstrates Abango's expertise in engineering scalable blockchain-powered fintech platforms
SCOPE / 04

Engineering impact

Koyn showcases Abango's expertise in building blockchain-powered fintech solutions that combine secure cryptocurrency trading, wallet infrastructure, and everyday digital payment services within a unified ecosystem. The platform delivers fast, reliable transaction processing through scalable mobile, web, and enterprise administration systems.

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