MandalBook is a customizable accounting app from The Marcus Studio, designed for Ganesh mandals and other community festival committees. It helps volunteers manage contributions, donations, sponsorships, and expenses in one place, with entries organized under categories suited to each mandal’s needs. Users can generate receipts bearing the mandal’s name and share them directly with donors through WhatsApp. A live dashboard gives committee members visibility into income, spending, and balances, while role-based permissions support presidents, treasurers, and volunteers.

The app also provides member management, festival-specific accounts, separate cash and bank or UPI balances, and downloadable PDF and Excel reports. Its audit trail records changes, and entries are archived rather than permanently deleted. Google sign-in, Marathi, Hindi, and English language options, offline entry with later synchronization, and in-app assistance support day-to-day use. MandalBook offers up to ₹50,000 in contributions at no charge, with no card or commitment required. The company also says it can tailor the app to a mandal’s workflows and develop additional features as needed.