It's a combination of a beautiful UI with useful information (it usually notifies me of delays before people are notified at the airport) and has on more than one occasion informed me of a cancellation while sitting at the gate already, so I got first dibs on trying to find a solution myself from that origin before everyone else starts being rebooked - or trying to get rebooked.

It also informs me of gate changes, equipment changes, expected delays based on the inbound aircraft being on time or being delayed, and if there are delays, oftentimes a reason why the delays are there (e.g. gate holds).

Otherwise it also has import/export functionality which makes it relatively easy to migrate data. For the fun of it, I also run https://github.com/johanohly/AirTrail locally at home and while it's a fun project that I like to see succeed it's not "quite there yet".

Lastly, it runs on iPad/iPhone/Mac with UIs for each platform, so I always have my upcoming flights and schedule at hand wherever I am in a native app.

I thought of giving MyFlightRadar24 a go, but I don't see why I would change.