This is not an official Metro app; I am not affiliated with Metro in any way. Transit Tracker+ - LA is an ad-free version of Transit Tracker - LA with a few additional features. Transit Tracker - LA allows riders to take advantage of the the API for tracking Metro buses in the Los Angeles County area. Transit Tracker - LA also includes the ability to download route schedules.
It's free of charge to get the installation package of Transit Tracker+, also, you can have a look at users' reviews on Droid Informer. The app works fine on Android 4.1 and above. The download of this application doesn't contain viruses or any kind of malware. Hillman apps is the developer of the tool which is related to the Maps & Navigation category.
Transit Tracker+ has been downloaded and set up by over 5 users and the most recent update is dated Sep 25, 2020. The app was rated 4 on Google Play.