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If you are building iOS apps, you can use the Swift PiwikTracker client (or the older Objective-C PiwikTracker) to send tracking data to your Matomo server.
Learn more and download Matomo iOS SDK on Github at github.com/matomo-org/piwik-sdk-ios.
If you are building Android apps, you can use the Android Java client to send tracking data to your Matomo server.
Learn more and download Matomo Android SDK on Github at github.com/matomo-org/piwik-sdk-android.
If you are building Mobile apps using Appcelerator Titanium, use the Matomo Analytics Module for Titanium to measure how users are navigating and consuming your apps.
Learn more and download the Matomo Module for Titanium at github.com/manumaticx/ti.piwik.
Learn more about our Matomo Tracking API PHP client on Github: github.com/matomo-org/piwik-php-tracker.
A Java client for the Matomo Tracking API is available on Github: github.com/matomo-org/piwik-java-tracker.
A C# client implementation of the Tracking API is available on Github at github.com/matomo-org/piwik-dotnet-tracker.