Khata Book app is a new way of maintaining a khata book through a mobile app. The online khata book helps the local small and medium Kirana store owners to manage their sale khata and udhar khata digitally, helping them track the money. The old-school khata book diary is now maintained as a digital ledger. The Kirana stores that are also known as the mom and pop stores constitute 90% of the grocery market in India. Therefore the Digital India initiative of the government can't leave them behind. The online khata book diary through the khata book app is a step to bring the MSMEs to another technically advanced stage. Digital khata helps resolve a lot of day-to-day troubles of these small store owners in maintaining the khata book diary.