<s>
Assistant	O
is	O
an	O
intelligent	B-Protocol
personal	I-Protocol
assistant	I-Protocol
application	O
for	O
mobile	O
devices	O
developed	O
by	O
Speaktoit	B-Application
.	O
</s>
<s>
Originally	O
launched	O
in	O
October	O
2011	O
for	O
the	O
Android	B-Application
platform	I-Application
(	O
although	O
available	O
in	O
beta	O
in	O
March	O
2011	O
)	O
,	O
Assistant	O
had	O
since	O
come	O
to	O
iOS	B-Application
and	O
Windows	B-Protocol
Phones	I-Protocol
.	O
</s>
<s>
Assistant	O
used	O
natural	B-Language
language	I-Language
processing	I-Language
and	O
speech	B-Application
recognition	I-Application
to	O
interact	O
with	O
its	O
users	O
and	O
was	O
able	O
to	O
have	O
clarifying	O
conversations	O
.	O
</s>
<s>
Unlike	O
Apple	O
's	O
Siri	B-Application
,	O
Assistant	O
came	O
in	O
the	O
form	O
of	O
a	O
customizable	O
,	O
cartoonish	O
avatar	O
.	O
</s>
<s>
The	O
New	O
York	O
Times	O
recognized	O
Assistant	O
as	O
one	O
of	O
the	O
top	O
10	O
Android	B-Application
Apps	O
of	O
2011	O
.	O
</s>
<s>
6	O
top	O
grossing	O
app	O
in	O
the	O
Lifestyle	O
category	O
on	O
Google	B-Application
Play	I-Application
in	O
the	O
US	O
.	O
</s>
<s>
All	O
web	O
links	O
to	O
the	O
app	O
now	O
redirect	O
to	O
ai	O
's	O
website	O
.	O
</s>
