My RetroAchievements is an app that provides you all your achievements, games, top 10 leaderboard from the site RetroAchievements.org.
It has dark theme so It doesnt hurt your eyes, you can check easily your progress while playing, just open your achievements and touching the update button on top right of the screen you can check if your update was unlocked.
You can add games to your "Want To Play" list.