Four tafsirs cover every verse: Tafsir Ahsanul Bayaan (Bengali, id 165), Tafsir Abu Bakr Zakaria / King Fahd (Bengali, id 166), Ma'arif al-Qur'an (English, id 168) and Al-Tafsir al-Wasit (Arabic, id 93). While reading, tap any verse to open its tafsir page.
API: GET https://quran.sorenchat.com/api/tafsirs lists them as JSON; GET https://quran.sorenchat.com/api/tafsir/{lang}/{id}/{SSSVVV}.txt serves one verse.
Example: tafsir of Surah 1, verse 1