<s>
Keep	O
is	O
a	O
Chinese	O
mobile	B-Application
fitness	B-Application
app	I-Application
.	O
</s>
<s>
A	O
December	O
2018	O
report	O
published	O
by	O
Sootoo	O
Institute	O
found	O
that	O
there	O
were	O
38.8million	O
downloads	O
of	O
Keep	O
between	O
July	O
and	O
September	O
,	O
making	O
it	O
"	O
the	O
most	O
downloaded	O
fitness	B-Application
app	I-Application
in	O
China	O
"	O
.	O
</s>
<s>
A	O
December	O
2018	O
report	O
published	O
by	O
Sootoo	O
Institute	O
found	O
that	O
there	O
were	O
38.8million	O
downloads	O
of	O
Keep	O
between	O
July	O
and	O
September	O
,	O
making	O
it	O
"	O
the	O
most	O
downloaded	O
fitness	B-Application
app	I-Application
in	O
China	O
"	O
.	O
</s>
<s>
1	O
fitness	B-Application
app	I-Application
'	O
Keep	O
 '	O
and	O
went	O
back	O
to	O
the	O
gym	O
"	O
.	O
</s>
<s>
Research	O
firm	O
CB	O
Insights	O
wrote	O
in	O
a	O
2017	O
report	O
that	O
"	O
Many	O
fitness	O
mobile	B-Application
apps	I-Application
offer	O
convenience	O
,	O
but	O
Keep	O
has	O
differentiated	O
itself	O
by	O
integrating	O
social	O
media	O
and	O
e-commerce	O
within	O
its	O
app	O
.	O
</s>
