<s>
Chirp	B-Application
is	O
a	O
U.S.	O
based	O
audiobook	O
retail	O
service	O
.	O
</s>
<s>
As	O
of	O
May	O
2021	O
,	O
Chirp	B-Application
is	O
available	O
in	O
the	O
United	O
States	O
and	O
Canada	O
.	O
</s>
<s>
Chirp	B-Application
audiobooks	O
can	O
be	O
accessed	O
via	O
the	O
Chirp	B-Application
app	O
and	O
can	O
be	O
used	O
on	O
Android	B-Application
or	O
iOS	B-Application
.	O
</s>
<s>
Chirp	B-Application
's	O
parent	O
company	O
,	O
Pubmark	O
Inc.	O
,	O
is	O
headquartered	O
in	O
Cambridge	O
,	O
Massachusetts	O
.	O
</s>
<s>
Chirp	B-Application
was	O
launched	O
in	O
2019	O
,	O
and	O
is	O
owned	O
and	O
operated	O
by	O
the	O
founders	O
of	O
BookBub	O
,	O
an	O
online	O
book	O
discovery	O
service	O
.	O
</s>
<s>
Although	O
Chirp	B-Application
was	O
launched	O
more	O
recently	O
,	O
BookBub	O
and	O
its	O
parent	O
company	O
Pubmark	O
Inc	O
.	O
have	O
been	O
around	O
since	O
2012	O
,	O
when	O
it	O
was	O
founded	O
by	O
Josh	O
Schanker	O
and	O
Nicholas	O
Ciarelli	O
.	O
</s>
<s>
Built	O
in	O
Boston	O
named	O
BookBub	O
and	O
Chirp	B-Application
one	O
of	O
its	O
21	O
Boston	O
companies	O
to	O
watch	O
in	O
2021	O
.	O
</s>
