Our salespeople will not use another app.+
That is a fair constraint and it shapes the design. Salespeople keep working in WhatsApp; the recording happens behind the scenes from conversations that already exist. The people who open the app are usually the ones who need the whole pipeline view.
Will personal chats be readable?+
No. Only the business numbers you designate are connected, never personal accounts. Conversations outside those numbers never enter the system.
We already have a CRM.+
If that CRM allows writing data from outside, conversations can feed it without replacing anything. The usual problem is not the absence of a CRM but a CRM nobody fills because filling it is manual.
Can a team spread across cities use it?+
Yes. Opportunities and work open in a browser from anywhere, and access follows role and territory, so each person sees the part they are responsible for.