<s>
Prismatic	B-Application
was	O
a	O
social	O
news	O
curation	O
and	O
discovery	O
application	O
for	O
various	O
Web	B-Application
browsers	I-Application
and	O
mobile	B-Application
devices	I-Application
running	O
iOS	B-Application
.	O
</s>
<s>
It	O
combined	O
machine	O
learning	O
,	O
user	B-Application
experience	I-Application
design	I-Application
,	O
and	O
interaction	B-General_Concept
design	I-General_Concept
to	O
create	O
a	O
new	O
way	O
to	O
discover	O
,	O
consume	O
,	O
and	O
share	O
media	O
.	O
</s>
<s>
Prismatic	B-Application
software	O
used	O
social	O
network	O
aggregation	O
and	O
machine	O
learning	O
algorithms	O
to	O
filter	O
the	O
content	O
that	O
aligns	O
with	O
the	O
interests	O
of	O
a	O
specific	O
user	O
.	O
</s>
<s>
Prismatic	B-Application
integrated	O
with	O
Facebook	B-Application
,	O
Twitter	B-Application
,	O
and	O
Pocket	B-Operating_System
to	O
gather	O
information	O
about	O
user	O
's	O
interests	O
and	O
suggest	O
the	O
most	O
relevant	O
stories	O
to	O
read	O
.	O
</s>
<s>
Prismatic	B-Application
initially	O
launched	O
in	O
2012	O
for	O
Web	B-Application
browsers	I-Application
and	O
the	O
iPhone	O
,	O
followed	O
by	O
the	O
release	O
of	O
an	O
iPad	O
app	O
on	O
December	O
19	O
,	O
2013	O
.	O
</s>
<s>
Prismatic	B-Application
was	O
produced	O
by	O
Prismatic	B-Application
,	O
Inc.	O
,	O
a	O
United-States-based	O
software	O
company	O
founded	O
in	O
2010	O
by	O
Bradford	O
Cross	O
and	O
Aria	O
Haghighi	O
and	O
headquartered	O
in	O
San	O
Francisco	O
,	O
California	O
.	O
</s>
<s>
The	O
Prismatic	B-Application
app	O
was	O
centered	O
on	O
a	O
feed	O
of	O
news	O
stories	O
.	O
</s>
<s>
Users	O
can	O
share	O
stories	O
to	O
connected	O
services	O
like	O
Twitter	B-Application
and	O
Facebook	B-Application
,	O
save	O
stories	O
for	O
later	O
reading	O
,	O
comment	O
on	O
stories	O
,	O
and	O
browse	O
tens	O
of	O
thousands	O
of	O
topics	O
.	O
</s>
<s>
Though	O
the	O
Prismatic	B-Application
app	O
was	O
featured	O
on	O
the	O
front	O
page	O
of	O
the	O
Apple	O
app	O
store	O
,	O
and	O
Prismatic	B-Application
received	O
$15m	O
funding	O
back	O
in	O
2012	O
,	O
the	O
industry	O
of	O
news	B-Application
aggregation	I-Application
apps	O
have	O
been	O
difficult	O
to	O
break	O
through	O
and	O
Prismatic	B-Application
had	O
to	O
close	O
their	O
doors	O
on	O
December	O
20	O
,	O
2015	O
.	O
</s>
<s>
Prismatic	B-Application
was	O
founded	O
by	O
Bradford	O
Cross	O
and	O
Aria	O
Haghighi	O
in	O
2010	O
.	O
</s>
<s>
Before	O
starting	O
Prismatic	B-Application
,	O
Cross	O
was	O
a	O
head	O
of	O
research	O
at	O
Flightcaster	O
,	O
a	O
Y	O
Combinator	O
funded	O
startup	O
.	O
</s>
<s>
Haghighi	O
received	O
a	O
BS	O
in	O
Mathematics	O
at	O
Stanford	O
and	O
completed	O
an	O
NLP	O
and	O
machine	O
learning	O
focused	O
PhD	O
at	O
UC	O
Berkeley	O
before	O
joining	O
Prismatic	B-Application
.	O
</s>
<s>
Prismatic	B-Application
released	O
version	O
2.0.0	O
on	O
Apple	O
's	O
App	O
Store	O
in	O
December	O
2013	O
.	O
</s>
<s>
Prismatic	B-Application
raised	O
$1.5	O
million	O
in	O
venture	O
financing	O
in	O
early	O
2012	O
from	O
investors	O
including	O
Battery	O
Ventures	O
and	O
Javelin	O
Venture	O
Partners	O
.	O
</s>
<s>
Prismatic	B-Application
had	O
been	O
positively	O
reviewed	O
by	O
multiple	O
news	O
outlets	O
,	O
including	O
The	O
New	O
York	O
Times	O
,	O
TechCrunch	O
,	O
Business	O
Insider	O
,	O
GigaOm	O
,	O
AllThingsD	O
,	O
and	O
PandoDaily	O
.	O
</s>
<s>
Apple	O
had	O
repeatedly	O
featured	O
the	O
Prismatic	B-Application
iOS	B-Application
app	O
.	O
</s>
<s>
Prismatic	B-Application
had	O
an	O
average	O
rating	O
of	O
4.5	O
stars	O
on	O
the	O
iOS	B-Application
App	O
Store	O
,	O
from	O
over	O
2,000	O
user	O
ratings	O
.	O
</s>
<s>
Prismatic	B-Application
primarily	O
used	O
Clojure	B-Language
and	O
ClojureScript	B-Language
in	O
production	O
.	O
</s>
<s>
Prismatic	B-Application
has	O
open-sourced	O
a	O
large	O
part	O
of	O
its	O
technology	O
stack	O
on	O
GitHub	B-Application
,	O
including	O
Plumbing	O
,	O
om-tools	O
,	O
Schema	O
,	O
fnHouse	O
,	O
and	O
hiphip	O
.	O
</s>
