This app was mentioned in 1 comment, with an average of 1.00 upvote
Indian Rail Info - https://play.google.com/store/apps/details?id=com.indiatravel.apps
Water your body - https://play.google.com/store/apps/details?id=com.northpark.drinkwater
AcDisplay (notification app, turns on screen [clock] for brief moment when you take phone out of pocket) - https://play.google.com/store/apps/details?id=com.achep.acdisplay
Internet Speed Meter Lite -https://play.google.com/store/apps/details?id=com.internet.speed.meter.lite
Shows current speed, logs usage on daily basis, very useful when using phone for transactions (you know whether Internet is working or not).