Manga readers come

Any Android app suggestion to read free manga ?

mangadex.org

There's an app called mihon. You can literally download any source and read it.

tachiyomi

Not an app but
Manga4life or mangasee

Nice try Shonenjump employee

mihon

saebr [#4]

tachiyomi

edit: holy moly Mihon is just Tachiyomi but still in development I'm saved, use Mihon
Tachiyomi is a good option if you have an older phone

Manga4life for really good quality scans

installed mangazone 4 years ago, never changed it

kotatsu, most polished of the open source reader forks imo

oniyomi with dependancies, can pretty much any website you would normally use

EseemedRes1180 [#3]

There's an app called mihon. You can literally download any source and read it.

Extensions ?