Android and iOS, your name on it, live in about a month.
Maintenance is not optional. It covers store policy changes, OS updates and engine improvements — without it the app quietly stops working within a year.
Your clients ask if you have an app. Building one properly means a mobile team, an astrology engine, store compliance and ongoing maintenance. Quotes come back at several lakh and six months.
Tell us roughly what you need. We reply within one working day, and we will say plainly if something cheaper suits you better.