How can I access veryfit app database on my device? I have installed VeryFit2.0 app on my mobile.I want to see previous days heart beat data but there is no option.Is there are way by which I can get in to the database of the app as I know its an offline app ?
Responding about the database location:  The database on the sd card looks like a backup of sorts.  The real database is found in the system : System/data/data/com.veryfit/multi 
I found it using android studio.  However if your phone is not rooted you can't access the directory.  But if you use adb you can create a backup of that folder on your computer: adb backup -noapk com.veryfit.multi 
Once you have the backup.ab you need to unpack it.  I used Android Backup Extractor .  That will give you a .tar file that you can open and explore the database using sqlite3  
Links where I found this info: 
access data inside data/data/  https://stackoverflow.com/questions/13006315/how-to-access-data-data-folder-in-android-device

extracting an ab file  https://stackoverflow.com/questions/18533567/how-to-extract-or-unpack-an-ab-file-android-backup-file