<s>
Yattee	B-Operating_System
is	O
a	O
free	B-License
and	I-License
open-source	I-License
unofficial	O
YouTube	B-General_Concept
client	O
for	O
iOS	B-Application
,	O
macOS	B-Application
and	O
tvOS	B-Operating_System
.	O
</s>
<s>
On	O
iOS	B-Application
and	O
tvOS	B-Operating_System
,	O
it	O
is	O
available	O
on	O
the	O
App	B-Application
Store	I-Application
,	O
from	O
the	O
official	O
GitHub	B-Application
repository	B-General_Concept
(	O
although	O
this	O
option	O
requires	O
sideloading	B-Protocol
)	O
and	O
on	O
TestFlight	O
.	O
</s>
<s>
The	O
macOS	B-Application
version	O
is	O
available	O
from	O
the	O
official	O
repository	B-General_Concept
and	O
in	O
Homebrew	B-Application
.	O
</s>
<s>
It	O
is	O
intended	O
to	O
be	O
used	O
as	O
a	O
"	O
privacy-respecting	O
"	O
alternative	O
to	O
the	O
official	O
YouTube	B-General_Concept
app	I-General_Concept
.	O
</s>
<s>
Yattee	B-Operating_System
was	O
originally	O
released	O
as	O
Version	O
1.0.0	O
on	O
12	O
November	O
2021	O
and	O
was	O
created	O
by	O
Arkadiusz	O
Fal	O
.	O
</s>
<s>
Yattee	B-Operating_System
does	O
not	O
use	O
the	O
official	O
YouTube	B-General_Concept
API	O
,	O
but	O
instead	O
utilises	O
the	O
Invidious	O
Developer	O
API	O
and	O
the	O
Piped	O
JSON	O
API	O
.	O
</s>
<s>
The	O
app	O
currently	O
uses	O
both	O
the	O
built-in	O
AVPlayer	B-Operating_System
and	O
mpv	B-Language
as	O
backends	O
.	O
</s>
<s>
Yattee	B-Operating_System
also	O
includes	O
SponsorBlock	B-Operating_System
,	O
a	O
popular	O
free	B-License
and	I-License
open-source	I-License
technology	O
that	O
automatically	O
skips	O
the	O
sponsored	O
segments	O
of	O
videos	O
.	O
</s>
<s>
Version	O
1.4	O
implemented	O
Return	O
YouTube	B-General_Concept
Dislike	O
,	O
an	O
open-source	B-License
extension	B-Protocol
that	O
re-adds	O
the	O
dislike	O
counter	O
to	O
the	O
app	O
.	O
</s>
