Caltrain Droid is the top Caltrain app for Android.

Features:
- No network connectivity required
- Fare and Baby Bullet trains clearly indicated
- Information about timed transfers
- Spinner lets you quickly choose stations
- Next available train is highlighted
- View times, train numbers, and duration
- Easy access to Twitter live updates
From version Caltrain Droid 3.7.1:
v3.7 Schedule and fare updates for October 1, 2017
v3.7.1 Fixes to errors in schedule
All versions
October 6, 2017
September 29, 2017