MyStats for Android
That data can be your wake-up time, weight, number of cigarettes, temperature - anything valuable you want to memorize. You can get some statistics of the data you've entered - minimal, maximum and average values, total number of entries and number of entries per day. You can show your values on chart. In future there will be an option to export all the data to the spreadsheet file.
VERY TRIG USEFUL
by D####:
I think interface is not intuitive, and on nexus 5x graphs look just horrible, I almost can't see labels on x-axis (ie dates)