The Apex Legends Status mobile app provides you all kind of useful information for Apex Legends.
The app allows you to track your player statistics, including your match history, progression and other misc data. You can also find the map rotation for all modes available in game.
A wide range of leaderboards are available, covering all stats in game, on top of live ranked leaderboards for each platform.
Keep track of the various Apex issues within the app.
You can also find the current crafting rotation, showing all available items in Replicators in game.
Pick rates gives you all pick rates for each legends in the current season.

See the ranked status using the Predator LP cap, giving you the LP threshold to reach Apex Predator, or the ranked distribution, showing you the percentage of players within each rank.