ePathshala, part of the digital India campaign, is an “online school”. It provides learning resources for schools as well as individual students — either still in school or studying independently. It covers the entire curriculum prescribed by different Indian education boards.
The NCERT (National Council of Educational Research and Training) is a government organisation established in 1961. It assists and advises the central and state governments on matters related to school education.
You can download the ePathshala mobile app here. You can also download NCERT textbooks from their website.