Sun Abu Dawood Properly full book is implement with navigation bar where list of chapter and use save bookmarks are shown even their is setting where you can set the fonts of text type face and text size.
baab and full detail page with bookmarks and copying the text.

About Sun Abu Dawood

Sunan Abi Dawud is a collection of hadith compiled by Imam Abu Dawud Sulayman ibn al-Ash'ath as-Sijistani (rahimahullah). It is widely considered to be among the six canonical collections of hadith (Kutub as-Sittah) of the Sunnah of the Prophet (ﷺ). It consists of 5274 ahadith in 43 books.

Upcoming Update:
In upcoming update search with be added even more translation will be added.
more fonts will be added
you can add text with book mark as well.
Dark theme Will be added in it .