<s>
Daylio	B-Application
is	O
a	O
diary	O
and	O
mood	O
tracking	O
app	O
available	O
on	O
iOS	B-Application
and	O
Android	B-Application
.	O
</s>
<s>
The	O
iOS	B-Application
app	O
is	O
published	O
by	O
Relaxio	O
,	O
while	O
the	O
Android	B-Application
app	O
on	O
the	O
Google	B-Application
Play	I-Application
Store	I-Application
is	O
published	O
by	O
Habitics	O
.	O
</s>
<s>
Daylio	B-Application
's	O
most	O
basic	O
functionality	O
allows	O
users	O
to	O
enter	O
their	O
mood	O
on	O
a	O
five-point	O
scale	O
and	O
optionally	O
write	O
an	O
associated	O
journal	O
entry	O
.	O
</s>
<s>
The	O
app	O
employs	O
various	O
strategies	O
to	O
incentivize	O
frequent	O
entries	O
,	O
such	O
as	O
a	O
daily	O
streak	O
system	O
,	O
push	B-General_Concept
notifications	I-General_Concept
,	O
and	O
achievements	O
.	O
</s>
<s>
Daylio	B-Application
provides	O
several	O
statistics	O
displayed	O
in	O
charts	O
,	O
such	O
as	O
a	O
monthly	O
mood	O
line	O
graph	O
and	O
an	O
average	O
daily	O
mood	O
bar	O
chart	O
.	O
</s>
<s>
This	O
concept	O
of	O
displaying	O
a	O
mosaic	O
of	O
colored	O
mood	O
dots	O
was	O
originally	O
conceived	O
by	O
Camillede	O
Passion	O
Carnets	O
for	O
use	O
in	O
Bullet	B-Application
Journals	I-Application
.	O
</s>
<s>
While	O
many	O
of	O
Daylio	B-Application
's	O
basic	O
features	O
are	O
available	O
for	O
free	O
,	O
the	O
app	O
also	O
offers	O
a	O
paid	O
premium	O
option	O
.	O
</s>
<s>
This	O
adds	O
features	O
such	O
as	O
the	O
removal	O
of	O
ads	O
for	O
Android	B-Application
,	O
a	O
PIN	O
lock	O
for	O
iOS	B-Application
,	O
advanced	O
stats	O
,	O
automatic	O
backups	O
,	O
and	O
more	O
icons	O
and	O
emojis	O
.	O
</s>
<s>
Daylio	B-Application
has	O
received	O
generally	O
positive	O
feedback	O
,	O
specifically	O
related	O
to	O
its	O
ease	O
of	O
use	O
.	O
</s>
<s>
Daylio	B-Application
has	O
also	O
been	O
cited	O
by	O
LifeHacker.com	O
as	O
being	O
good	O
"	O
If	O
you	O
want	O
a	O
private	O
and	O
fast	O
micro	O
journal''	O
"	O
.	O
</s>
<s>
These	O
include	O
an	O
unwelcoming	O
sign	O
up	O
screen	O
,	O
in-app	O
permissions	O
related	O
to	O
sensitive	O
data	O
,	O
a	O
non-standardized	O
design	O
between	O
IOS	B-Application
and	O
Android	B-Application
platforms	I-Application
,	O
and	O
unclear/crowded	O
icons	O
.	O
</s>
<s>
However	O
,	O
their	O
conclusion	O
states	O
that	O
,	O
"	O
Overall	O
,	O
the	O
outcomes	O
reveal	O
that	O
the	O
Daylio	B-Application
mobile	O
app	O
is	O
effective	O
,	O
efficient	O
and	O
reliable	O
in	O
Use	O
.	O
</s>
