Castex is a mobile app development company in Paris. We design, build and publish Android and iOS apps, and the servers behind them, in the language that suits each part of the job.
Kotlin is our first choice for native Android.
fun main(From the first sketch to a published app and the backend it relies on.
QrScanner and QrScanner Pro share a core we built once and tuned for both products.
Point, scan, done. A scanner for everyday codes that gets out of the way.
An Android app for people who scan a menu, a parcel label or a Wi-Fi code a few times a week and want the result immediately.
Android package: com.qrscan.code.appmobile.app
Read the QrScanner case studyScanning plus creating. A toolkit for people who work with codes every day.
An Android app for small businesses, event staff and anyone who scans in bulk, creates their own codes and needs to export what they collected.
Android package: com.qrscanner.code.appmobile.pro
Read the QrScanner Pro case studyAn app is several programs working together. Each layer has a language that fits it.
A conversation about what the app should do, who it is for and what already exists. No preparation needed on your side.
A written scope with the platforms, technologies, milestones and price for your project, based on what we learned in the call.
User flows and a clickable prototype you can try on your phone before development begins.
Short cycles, each ending with a working build you can install and give feedback on.
Automated and device testing, store preparation, submission and a staged rollout.
Updates for new platform requirements, fixes and new features, on terms agreed in advance.
Tell us what it should do and who it is for. We reply from [email protected] with questions or a time for a call.