While working with a major theater chain, I was tasked with implementing Analytics into their Xamarin app. Part of that work included implementing Google Tag Manager. At a later date, I was again tasked with implementing Google Tag Manager but this time, into their Flutter app. I expected the implementation to be similar and definitely easier the second time around, but I found that to be false. The setup had some major twists and turns that I didn’t expect.

Although this was sometimes a frustrating challenge, I had fun figuring it out. Most companies running their apps with Xamarin will be moving their apps to a newer SDK like Flutter at some point. Flutter allows cross platform development for Android, iOS, Linux, macOS, Windows, Google Fuchsia, and Web from a single codebase and shared languages. So this move is almost inevitable.

In this post, I’ll take you through a step-by-step tutorial of transferring from Xamarin to Flutter. By the end, GTM will be in your Flutter app!