Chatmart – WhatsApp Orders and Bookings Manager Flutter App | Web

Chatmart turns a WhatsApp Business number into a shop counter and a booking desk. A customer messages the number and, without leaving the chat, browses a catalog, places an order, pays, and books a real appointment slot. They install nothing, open no link, and create no account.

What makes Chatmart different

Native in-chat forms. Chatmart implements WhatsApp Flows, Meta’s official in-chat form system. The customer fills in a structured form inside WhatsApp rather than tapping through to a web page. Payloads are encrypted with RSA-OAEP and AES-GCM exactly as Meta’s specification requires.

Live slot availability. The times offered to a customer are calculated at the moment they open the picker, against existing bookings, the service’s duration, staff capacity and the branch’s opening hours. A slot taken seconds earlier is not shown, so double-booking cannot occur.

One installation, many locations. Each branch has its own WhatsApp number, currency, language, opening hours, catalog and staff. Branch separation is enforced by a database-level query scope rather than per-screen filtering.

The gap this fills

WhatsApp is where a large share of small businesses already take orders, by hand, in an inbox. Tools exist for takeaway-style ordering. What has been missing is appointment capability: a salon, barber, clinic, tutor, garage or studio needs a customer to choose a real time from real availability, and needs that to be correct when two people book at once.

Chatmart handles both. Sell products, take bookings, or run the two together from the same installation and the same number.