<s>
Cydia	B-Device
is	O
a	O
graphical	B-Application
user	I-Application
interface	I-Application
of	O
APT	B-Application
(	O
Advanced	B-Application
Package	I-Application
Tool	I-Application
)	O
for	O
iOS	B-Application
.	O
</s>
<s>
It	O
enables	O
a	O
user	O
to	O
find	O
and	O
install	O
software	O
not	O
authorized	O
by	O
Apple	O
on	O
jailbroken	B-Application
iPhones	B-Device
,	O
iPads	B-Device
and	O
iPod	B-Device
Touch	I-Device
devices	O
.	O
</s>
<s>
It	O
also	O
refers	O
to	O
digital	O
distribution	O
platform	O
for	O
software	O
on	O
iOS	B-Application
accessed	O
through	O
Cydia	B-Device
software	O
.	O
</s>
<s>
Most	O
of	O
the	O
software	B-Application
packages	I-Application
available	O
through	O
Cydia	B-Device
are	O
free	O
of	O
charge	O
,	O
although	O
some	O
require	O
purchasing	O
.	O
</s>
<s>
Cydia	B-Device
is	O
developed	O
by	O
Jay	O
Freeman	O
(	O
named	O
"	O
saurik	O
"	O
)	O
and	O
his	O
company	O
,	O
SaurikIT	O
.	O
</s>
<s>
The	O
name	O
"	O
Cydia	B-Device
"	O
is	O
a	O
reference	O
to	O
the	O
moth	O
genus	O
Cydia	B-Device
,	O
notably	O
the	O
Codling	O
Moth	O
(	O
Cydia	B-Device
pomonella	O
)	O
.	O
</s>
<s>
Cydia	B-Device
provides	O
a	O
graphical	B-Application
user	I-Application
interface	I-Application
(	O
GUI	B-Application
)	O
to	O
jailbroken	B-Application
users	O
using	O
Advanced	B-Application
Packaging	I-Application
Tool	I-Application
(	O
a	O
package	B-Application
manager	I-Application
)	O
repositories	O
to	O
install	O
software	O
unavailable	O
on	O
the	O
App	O
Store	O
.	O
</s>
<s>
Cydia	B-Device
is	O
based	O
on	O
APT	B-Application
,	O
ported	O
to	O
iOS	B-Application
as	O
part	O
of	O
Jay	O
Freeman	O
's	O
Telesphoreo	O
project	O
.	O
</s>
<s>
Apps	O
are	O
installed	O
in	O
the	O
same	O
location	O
as	O
Apple	O
's	O
own	O
applications	O
,	O
in	O
the	O
/Applications	O
directory	B-Application
.	O
</s>
<s>
Jailbroken	B-Application
devices	O
can	O
also	O
still	O
buy	O
and	O
download	O
apps	O
normally	O
from	O
the	O
official	O
App	O
Store	O
.	O
</s>
<s>
Some	O
jailbreaking	B-Application
tools	O
install	O
Cydia	B-Device
automatically	O
,	O
while	O
others	O
may	O
not	O
.	O
</s>
<s>
Some	O
of	O
the	O
packages	O
available	O
through	O
Cydia	B-Device
are	O
standard	O
applications	O
,	O
while	O
most	O
packages	O
are	O
extensions	O
and	O
modifications	O
for	O
the	O
iOS	B-Application
interface	O
and	O
for	O
apps	O
in	O
the	O
iOS	B-Application
ecosystem	O
.	O
</s>
<s>
Some	O
Cydia	B-Device
repositories	O
host	O
open	O
source	O
packages	O
as	O
well	O
as	O
paid	O
modifications	O
for	O
jailbroken	B-Application
devices	O
.	O
</s>
<s>
These	O
modifications	O
are	O
based	O
on	O
a	O
framework	O
called	O
Cydia	B-Device
Substrate	O
(	O
formally	O
MobileSubstrate	O
)	O
.	O
</s>
<s>
Many	O
ports	O
of	O
existing	O
POSIX-compliant	O
command	O
line	O
tools	O
are	O
available	O
on	O
Cydia	B-Device
as	O
well	O
,	O
including	O
bash	B-Operating_System
,	O
coreutils	B-Application
and	O
OpenSSH	B-Language
,	O
meaning	O
the	O
device	O
could	O
potentially	O
be	O
used	O
as	O
a	O
full-fledged	O
BSD	B-Operating_System
workstation	O
,	O
although	O
missing	O
some	O
development	O
tools	O
.	O
</s>
<s>
In	O
March	O
2009	O
,	O
the	O
now-defunct	O
blog	O
TUAW	O
(	O
The	O
Unofficial	O
Apple	O
Weblog	O
)	O
announced	O
that	O
the	O
Cydia	B-Device
Store	O
,	O
the	O
in-app	O
software	O
purchasing	O
system	O
for	O
Cydia	B-Device
,	O
had	O
opened	O
for	O
sales	O
.	O
</s>
<s>
Cydia	B-Device
stopped	O
accepting	O
Amazon	O
Payments	O
in	O
2015	O
,	O
leaving	O
PayPal	O
as	O
the	O
sole	O
payment	O
option	O
.	O
</s>
<s>
After	O
a	O
bug	O
related	O
to	O
PayPal	O
's	O
digital	O
token	O
authorization	O
was	O
discovered	O
via	O
TechCrunch	O
,	O
Freeman	O
decided	O
to	O
shut	O
down	O
the	O
Cydia	B-Device
Store	O
on	O
December	O
16	O
,	O
2018	O
.	O
</s>
<s>
The	O
risks	O
in	O
jailbreaking	B-Application
are	O
mixed	O
.	O
</s>
<s>
Advocates	O
offer	O
that	O
developer	O
tools	O
installed	O
from	O
Cydia	B-Device
can	O
help	O
add	O
extra	O
security	O
.	O
</s>
<s>
Cydia	B-Device
Substrate	O
,	O
the	O
code	O
injection	O
library	O
usually	O
installed	O
alongside	O
Cydia	B-Device
,	O
will	O
detect	O
if	O
an	O
installed	O
package	O
causes	O
SpringBoard	O
to	O
crash	O
,	O
and	O
will	O
reboot	O
it	O
with	O
all	O
third-party	O
packages	O
temporarily	O
disabled	O
.	O
</s>
<s>
Freeman	O
first	O
released	O
Cydia	B-Device
in	O
February	O
2008	O
as	O
an	O
open-source	O
alternative	O
to	O
Installer.app	B-Operating_System
on	O
1.1	O
.	O
</s>
<s>
In	O
August	O
2009	O
,	O
Wired	O
reported	O
that	O
Freeman	O
claimed	O
about	O
4	O
million	O
,	O
or	O
10	O
percent	O
of	O
the	O
40	O
million	O
iPhone	B-Device
and	O
iPod	B-Device
Touch	I-Device
owners	O
to	O
date	O
,	O
have	O
installed	O
Cydia	B-Device
.	O
</s>
<s>
On	O
December	O
15	O
,	O
2010	O
,	O
SaurikIT	O
filed	O
a	O
dispute	O
with	O
World	O
Intellectual	O
Property	O
Organization	O
against	O
Cykon	O
Technology	O
Limited	O
of	O
Kowloon	O
,	O
Hong	O
Kong	O
over	O
the	O
rights	O
to	O
the	O
domain	O
name	O
"	O
Cydia.com	O
 "	O
,	O
which	O
was	O
registered	O
in	O
2002	O
.	O
</s>
<s>
As	O
of	O
April	O
2011	O
,	O
Cydia	B-Device
had	O
a	O
$10	O
million	O
in	O
annual	O
revenue	O
and	O
4.5	O
million	O
weekly	O
users	O
and	O
according	O
to	O
Freeman	O
's	O
$	O
250,000	O
net	O
annual	O
profit	O
.	O
</s>
<s>
On	O
August	O
18	O
,	O
2011	O
,	O
SaurikIT	O
filed	O
a	O
lawsuit	O
against	O
Hong	O
Kong	O
owner	O
of	O
Cydia.com	O
regarding	O
the	O
same	O
domain	O
name	O
.	O
</s>
<s>
On	O
December	O
24	O
,	O
2013	O
,	O
Cydia	B-Device
was	O
updated	O
to	O
run	O
on	O
iOS	B-Operating_System
7	I-Operating_System
and	O
iOS	O
7.1	O
.	O
</s>
<s>
On	O
October	O
22	O
,	O
2014	O
,	O
the	O
Chinese	O
jailbreaking	B-Application
team	O
,	O
Pangu	B-Operating_System
Team	I-Operating_System
,	O
released	O
a	O
jailbreak	B-Application
for	O
iOS	B-Operating_System
8.0	I-Operating_System
-	O
8.1	O
.	O
</s>
<s>
In	O
response	O
,	O
Saurik	O
quickly	O
updated	O
Cydia	B-Device
to	O
1.1.13	O
,	O
which	O
added	O
support	O
for	O
iOS	B-Operating_System
8	I-Operating_System
and	O
pushed	O
the	O
update	O
to	O
apt.saurik.com	O
for	O
manual	O
download	O
.	O
</s>
<s>
On	O
February	O
26	O
,	O
2018	O
,	O
CoolStar	O
launched	O
the	O
initial	O
release	O
of	O
Electra	O
,	O
giving	O
access	O
to	O
Cydia	B-Device
from	O
iOS	B-Application
versions	O
11.0-11.1.2	O
.	O
</s>
<s>
Alongside	O
Electra	O
for	O
iOS	B-Application
11	O
,	O
CoolStar	O
released	O
several	O
patches	O
for	O
Cydia	B-Device
,	O
creating	O
a	O
Cydia	B-Device
version	O
compatible	O
with	O
the	O
Electra	O
jailbreak	B-Application
,	O
as	O
Electra	O
had	O
been	O
released	O
while	O
Saurik	O
was	O
still	O
working	O
on	O
updates	O
for	O
Cydia	B-Device
.	O
</s>
<s>
Saurik	O
eventually	O
released	O
the	O
update	O
,	O
and	O
pushed	O
the	O
update	O
to	O
iOS	B-Application
devices	O
running	O
iOS	B-Application
11	O
with	O
Cydia	B-Device
at	O
the	O
time	O
.	O
</s>
<s>
CoolStar	O
's	O
patched	O
version	O
of	O
Cydia	B-Device
turned	O
out	O
to	O
be	O
incompatible	O
with	O
Saurik	O
's	O
new	O
update	O
.	O
</s>
