<s>
A	O
fitness	B-Application
app	I-Application
is	O
an	O
application	B-Application
that	O
can	O
be	O
downloaded	O
on	O
any	O
mobile	B-Application
device	I-Application
and	O
used	O
anywhere	O
to	O
get	O
fit	O
.	O
</s>
<s>
Fitness	B-Application
apps	I-Application
are	O
designed	O
to	O
help	O
with	O
exercise	O
,	O
other	O
types	O
of	O
physical	O
training	O
,	O
nutrition	O
and	O
diet	O
,	O
and	O
other	O
ways	O
to	O
get	O
fit	O
.	O
</s>
<s>
As	O
of	O
2015	O
,	O
the	O
number	O
of	O
health-related	O
apps	O
released	O
on	O
the	O
two	O
leading	O
platforms	O
,	O
iPhone	B-Application
operating	I-Application
system	I-Application
(	O
iOS	B-Application
)	O
and	O
Android	B-Application
,	O
had	O
reached	O
more	O
than	O
165,000	O
.	O
</s>
<s>
Fitness	B-Application
apps	I-Application
can	O
work	O
in	O
conjunction	O
with	O
wearable	O
devices	O
to	O
synchronize	O
their	O
health	O
data	O
to	O
third-party	O
devices	O
for	O
easier	O
accessibility	O
.	O
</s>
<s>
Through	O
using	O
gamification	O
elements	O
and	O
creating	O
competition	O
among	O
friends	O
and	O
family	O
,	O
fitness	B-Application
apps	I-Application
can	O
help	O
incentive	O
users	O
to	O
be	O
more	O
motivated	O
.	O
</s>
<s>
Running	O
and	O
workout	B-Application
apps	I-Application
allow	O
users	O
to	O
run	O
or	O
work	O
out	O
to	O
music	O
in	O
the	O
form	O
of	O
DJ	O
mixes	O
that	O
can	O
be	O
personalized	O
based	O
on	O
the	O
user	O
's	O
steps	O
per	O
minute	O
,	O
heart	O
rate	O
or	O
ideal	O
cadence	O
thus	O
boosting	O
and	O
enhancing	O
performance	O
during	O
exercise	O
.	O
</s>
