<s>
KakaoGroup	B-Protocol
(	O
Hangul	B-Operating_System
:	O
카카오그룹	O
)	O
is	O
a	O
free	O
private	O
group	O
communication	O
app	O
launched	O
by	O
South	O
Korean	O
company	O
Kakao	O
in	O
2013	O
.	O
</s>
<s>
While	O
other	O
competing	O
apps	O
have	O
built-in	O
public	O
group	O
chat	O
functions	O
,	O
the	O
group	O
chats	O
in	O
KakaoGroup	B-Protocol
are	O
private	O
.	O
</s>
<s>
KakaoGroup	B-Protocol
operates	O
alongside	O
Kakao	O
's	O
public	O
messaging	O
service	O
,	O
KakaoTalk	B-Protocol
,	O
allowing	O
users	O
to	O
sync	O
their	O
messages	O
between	O
the	O
two	O
.	O
</s>
<s>
The	O
app	O
is	O
available	O
for	O
both	O
iOS	B-Application
and	O
Android	B-Application
mobile	I-Application
phones	I-Application
and	O
can	O
also	O
be	O
accessed	O
through	O
the	O
KakaoGroup	B-Protocol
website	O
.	O
</s>
<s>
In	O
addition	O
to	O
group	O
messaging	O
,	O
KakaoGroup	B-Protocol
offers	O
media	O
sharing	O
to	O
private	O
groups	O
,	O
a	O
group-specific	O
news	O
feed	O
,	O
and	O
support	O
for	O
the	O
popular	O
Kakao	O
Emoji	O
.	O
</s>
