Just keep it as a memory

The preferred tracker when mobile was popular

Free 150,000 events/month, supports custom domains + free SSL, suitable for beginners and advanced users, developed by a Chinese team, QQ customer service, deep integration with Google, Facebook, and TikTok Ads.

Expensive but powerful, it can be installed on your own server.

It's supposedly a very powerful tracker, but I haven't had the chance to try it out.

Powerful features, but requires a learning curve.