I will build a custom android app for your business

J
justin22_lan
J
justin22_lan
Justin C.
build a custom android app for your business
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build a custom android app for your business
Full Screen
Full Screen
build a custom android app for your businessbuild a custom android app for your businessbuild a custom android app for your business

About this gig

Need an Android app for your business? I build native Android apps in Kotlin, from the idea to a working APK or a published app on Google Play.


I am the developer of Kiosko, a point-of-sale (POS) app for small stores that is live on Google Play, with sales, inventory, customer credit, reports and backups.


What I can build for you:

  • POS, inventory and sales apps for stores, restaurants and bakeries
  • Booking, records and customer management apps
  • Apps with local database (offline), login, reports and PDF export
  • Cloud backend, push notifications, AdMob ads or in-app payments

Why work with me: I am a systems technician with a strong focus on security, so every app is built with security best practices from day one (safe data storage, input validation, no hardcoded secrets). You get clean, documented source code that you own.


I speak English and Spanish. Please message me before ordering so we can agree on the scope of your app.

  • App type

    • Native

  • Purpose

    • Restaurant
    • Shopping
    • Finance
    • Productivity tools
    • Custom
    • E-commerce

  • Expertise

    • Localization
    • Security
    • Ads & monetization
    • Data storage
    • Release management

  • Programming language

    • Java
    • Kotlin

  • Frameworks

    • Jetpack Compose
    • Android

  • Tools

    • Android Studio
    • Firebase

Get to know Justin C.

Justin C.

Web and Android App Developer for Small Businesses

  • FromColombia
  • Member sinceMar 2025
  • Avg. response time1 hour

  • Languages

    Spanish
Hi! I'm Justin, a Systems Technician from Colombia. I build websites, web apps and Android apps for small businesses. I developed and published "Kiosko", an Android POS app on Google Play (sales, inventory, receipts, customer credit), and a full web POS with inventory, accounting and debt tracking. Every project follows security best practices: secure logins, protected data and HTTPS. Clear communication, on-time delivery and support after delivery. Hablo español nativo. Message me and let's build your project!

My Portfolio

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