gps4camera vs NextTransit

This little app is, at the heart, is just a GPS track recorder. While it's recording tracks, it has all the data necessary to show movement information. So a bike computer-like screen was added (although it should work for cars and other vehicles). In addition, there is a screen which shows the current date and time along with a QR code. Both are updated once a second. Use your camera to take a picture of the screen and this can be used to sync the phone time with the photos from the camera. Note, this app does NOT sync the phone's time directly with the camera. The idea is to take a photo with the QR code, parse the QR code and sync the QR code photo's time with the timestamp embedded in the QR code. A secondary script, qrfinder, is available (view the app settings -> how to for more info).

NextTransit is your station agent. It gives you real-time access to the next train at your selected stations. No more clicking and tapping through lists of train lines and stations. Set it up once and the next train time in each direction is always there at a glance. It even includes Home Screen Widget and a Lock Screen Widget so you always know when your next train is leaving. Supports 12 transit systems across six metro areas (with more on the way), including NYC/NJ/LI(MTA Metro-North, LIRR, NJ Transit), SF Bay Area (BART, Caltrain), Boston (MBTA Commuter Rail, The T), Philadelphia (SEPTA Regional Rail, NJ Transit, PATCO Speedline), Washington DC (WMATA Metrorail), and Chicago (CTA Rail, Metra).