Statistic of VK messages for user
Show messages statistic for last 100, 200, 500 ... all messages.
Also can show messages stat for last 1, 2, 3, 4, 6, 8, 12, 24, 48, 168, 720 hours.
https://play.google.com/store/apps/details?id=com.qwert2603.vkmessagestat
