OnLog apk content rating is Everyone and can be downloaded and installed on android devices supporting 14 api and above.
"Who ? When ? How many minutes ? Are you curious about the online reports at Whats|App ? Even if you block it , you can still get online notification OnLog discover all Whats|App online activities during the day.Get the report Get instant online notification Free trial
Instant notifications , detailed statistics and analytics , last seen times , online durations , 2 number , blocked number ( if last - seen turned off)"