<s>
Aptoide	B-Application
is	O
an	O
online	O
marketplace	O
for	O
mobile	B-Application
applications	I-Application
which	O
runs	O
on	O
the	O
Android	B-Application
operating	I-Application
system	I-Application
.	O
</s>
<s>
In	O
Aptoide	B-Application
,	O
unlike	O
the	O
Android-default	O
Play	O
Store	O
,	O
there	O
is	O
not	O
a	O
unique	O
and	O
centralized	O
store	O
;	O
instead	O
,	O
each	O
user	O
manages	O
their	O
own	O
store	O
.	O
</s>
<s>
The	O
software	O
package	O
is	O
published	O
by	O
Aptoide	B-Application
S.A.	O
,	O
a	O
for-profit	O
company	O
incorporated	O
in	O
2011	O
,	O
and	O
headquartered	O
in	O
Lisbon	O
,	O
Portugal	O
.	O
</s>
<s>
There	O
are	O
several	O
versions	O
of	O
the	O
Aptoide	B-Application
app	O
:	O
Aptoide	B-Application
for	O
smartphones	B-Application
and	O
tablets	B-Device
,	O
Aptoide	B-Application
TV	O
an	O
edition	O
for	O
smart	O
TVs	O
and	O
STBs	O
,	O
Aptoide	B-Application
VR	O
and	O
Aptoide	B-Application
Kids	O
developed	O
for	O
children	O
's	O
devices	O
.	O
</s>
<s>
The	O
Android	B-Application
application	I-Application
used	O
to	O
access	O
the	O
stores	O
is	O
open	O
source	O
,	O
and	O
there	O
are	O
several	O
forks	O
such	O
as	O
F-Droid	B-Application
.	O
</s>
<s>
The	O
concept	O
is	O
inspired	O
by	O
the	O
APT	B-Application
packaging	O
manager	O
,	O
which	O
can	O
work	O
with	O
multiple	O
sources	O
(	O
repositories	O
)	O
.	O
</s>
<s>
The	O
name	O
Aptoide	B-Application
is	O
formed	O
from	O
the	O
words	O
"	O
APT	B-Application
"	O
(	O
the	O
Debian	O
package	O
manager	O
)	O
and	O
"	O
oide	O
"	O
(	O
the	O
last	O
syllable	O
of	O
"	O
Android	B-Application
"	O
)	O
.	O
</s>
<s>
Aptoide	B-Application
started	O
as	O
a	O
proposal	O
of	O
Paulo	O
Trezentos	O
at	O
the	O
2009	O
Caixa	O
Mágica	O
Summer	O
Camp	O
.	O
</s>
<s>
The	O
proposal	O
was	O
accepted	O
and	O
later	O
became	O
what	O
today	O
is	O
Aptoide	B-Application
.	O
</s>
<s>
The	O
idea	O
behind	O
Aptoide	B-Application
came	O
from	O
different	O
sources	O
.	O
</s>
<s>
In	O
the	O
end	O
of	O
2010	O
,	O
it	O
was	O
launched	O
in	O
the	O
Bazaar	O
Android	B-Application
site	O
.	O
</s>
<s>
Bazaar	O
Android	B-Application
provided	O
the	O
possibility	O
for	O
the	O
users	O
to	O
create	O
their	O
own	O
store	O
.	O
</s>
<s>
In	O
August	O
2012	O
,	O
Aptoide	B-Application
and	O
Bazaar	O
Android	B-Application
brands	O
were	O
merged	O
to	O
allow	O
a	O
better	O
communication	O
.	O
</s>
<s>
In	O
2011	O
,	O
Aptoide	B-Application
S.A.	O
was	O
incorporated	O
in	O
Lisbon	O
,	O
Portugal	O
,	O
as	O
a	O
spin-off	O
of	O
CM	O
Software	O
.	O
</s>
<s>
In	O
2011	O
,	O
F-Droid	B-Application
was	O
forked	O
from	O
Aptoide	B-Application
.	O
</s>
<s>
In	O
2013	O
,	O
Aptoide	B-Application
received	O
a	O
total	O
of	O
750,000	O
euros	O
in	O
seed	O
funding	O
from	O
Portugal	O
Ventures	O
.	O
</s>
<s>
The	O
investment	O
has	O
allowed	O
Aptoide	B-Application
to	O
grow	O
its	O
team	O
,	O
currently	O
having	O
over	O
60	O
employees	O
.	O
</s>
<s>
In	O
2014	O
,	O
Aptoide	B-Application
filed	O
a	O
European	O
Union	O
Antitrust	O
complaint	O
against	O
Google	B-Application
,	O
claiming	O
that	O
Google	B-Application
creates	O
obstacles	O
for	O
users	O
to	O
install	O
third-party	O
app	O
stores	O
,	O
links	O
essential	O
services	O
with	O
Google	B-Application
Play	O
(	O
thus	O
blocking	O
,	O
again	O
,	O
these	O
third-party	O
app	O
stores	O
)	O
,	O
and	O
blocks	O
access	O
to	O
Aptoide	B-Application
websites	O
in	O
its	O
Chrome	O
Web	O
browser	O
.	O
</s>
<s>
In	O
May	O
2015	O
,	O
Aptoide	B-Application
announced	O
that	O
it	O
would	O
start	O
its	O
operations	O
in	O
Asia	O
by	O
opening	O
an	O
office	O
in	O
Singapore	O
.	O
</s>
<s>
In	O
2017	O
,	O
Aptoide	B-Application
announced	O
that	O
it	O
would	O
be	O
working	O
with	O
AppCoin	O
and	O
"	O
enter	O
the	O
digital	O
currency	O
business	O
with	O
the	O
plainly	O
named	O
AppCoins	O
.	O
</s>
<s>
Aptoide	B-Application
client	O
allows	O
one	O
to	O
search	O
,	O
browse	O
and	O
install	O
applications	O
in	O
the	O
Android	B-Application
phone	I-Application
.	O
</s>
<s>
Aptoide	B-Application
is	O
available	O
in	O
17	O
languages	O
.	O
</s>
<s>
To	O
install	O
Aptoide	B-Application
,	O
the	O
user	O
has	O
to	O
retrieve	O
the	O
APK	O
(	O
installable	O
file	O
)	O
from	O
the	O
official	O
site	O
.	O
</s>
<s>
The	O
installation	O
is	O
not	O
available	O
through	O
Google	B-Application
Play	O
Store	O
due	O
to	O
4.5	O
Non-compete	O
clause	O
of	O
Google	B-Application
Play	O
Developer	O
Distribution	O
Agreement	O
.	O
</s>
<s>
This	O
is	O
the	O
same	O
clause	O
that	O
blocks	O
the	O
Amazon	O
Appstore	O
application	O
from	O
being	O
available	O
through	O
Google	B-Application
Play	O
.	O
</s>
<s>
Installing	O
Aptoide	B-Application
requires	O
users	O
to	O
allow	O
the	O
installation	O
from	O
"	O
Unknown	O
sources	O
"	O
in	O
Android	B-Application
settings	O
.	O
</s>
<s>
After	O
the	O
installation	O
of	O
Aptoide	B-Application
,	O
the	O
user	O
can	O
add	O
stores	O
(	O
repositories	O
)	O
.	O
</s>
<s>
When	O
a	O
store	O
is	O
added	O
using	O
the	O
URL	O
of	O
the	O
store	O
,	O
Aptoide	B-Application
retrieves	O
the	O
list	O
of	O
the	O
applications	O
and	O
stores	O
it	O
locally	O
.	O
</s>
<s>
In	O
June	O
2011	O
,	O
Aptoide	B-Application
Uploader	O
was	O
released	O
as	O
a	O
"	O
sister	O
"	O
application	O
from	O
the	O
same	O
development	O
team	O
.	O
</s>
<s>
Aptoide	B-Application
Uploader	O
is	O
an	O
Android	B-Application
app	O
that	O
allows	O
users	O
to	O
upload	O
to	O
an	O
existent	O
Aptoide	B-Application
store	O
.	O
</s>
<s>
Aptoide	B-Application
Uploader	O
uses	O
the	O
available	O
Aptoide	B-Application
Webservices	O
to	O
upload	O
the	O
application	O
.	O
</s>
<s>
For	O
the	O
user	O
that	O
wants	O
to	O
backup	O
their	O
apps	O
to	O
a	O
private	O
store	O
,	O
it	O
is	O
advisable	O
to	O
use	O
Aptoide	B-Application
Apps	O
Backup	O
that	O
keeps	O
a	O
record	O
of	O
the	O
apps	O
that	O
are	O
backed	O
up	O
.	O
</s>
<s>
All	O
the	O
applications	O
in	O
stores	O
are	O
managed	O
using	O
a	O
backoffice	O
in	O
the	O
Aptoide	B-Application
site	O
.	O
</s>
<s>
Aptoide	B-Application
Apps	O
Backup	O
uses	O
the	O
webservices	O
to	O
upload	O
the	O
APK	O
file	O
to	O
the	O
store	O
.	O
</s>
<s>
To	O
know	O
what	O
applications	O
are	O
already	O
backed	O
up	O
,	O
Aptoide	B-Application
Apps	O
Backup	O
uses	O
the	O
info.xml	O
XML	O
file	O
available	O
in	O
the	O
store	O
.	O
</s>
<s>
The	O
communication	O
between	O
the	O
Android	B-Application
client	I-Application
applications	O
and	O
the	O
store	O
is	O
done	O
using	O
a	O
XML	O
file	O
called	O
info.xml	O
.	O
</s>
<s>
Aptoide	B-Application
usage	O
was	O
reported	O
as	O
follows	O
:	O
</s>
