No.
You don't need a CRM.
Why
You're running a chiropractic clinic in Mumbai with roughly 50 WhatsApp and Instagram DM inquiries per month — that's about 12 per week. The issue you named is losing track of who's been replied to, which is a simple visibility gap, not a pipeline complexity problem. No CRM will fix a habit of leaving messages unread or switching between apps without marking them.
What you actually need
- WhatsApp Business App (free) — use the built-in Labels feature to tag every inquiry as "New", "Replied", or "Booked"; this alone solves your "who's been replied to" problem on WhatsApp.
- Instagram Quick Replies (free) — set up 2–3 saved replies inside Instagram's settings so every DM gets an instant acknowledgment within seconds, eliminating the "did I respond?" anxiety.
- A habit — the daily 10-minute sweep — once each morning and once each evening, open both apps, label or clear every conversation, and move anyone who hasn't booked into a follow-up.
Do this today
Open WhatsApp Business right now, tap the Labels icon, and create three labels: "New Inquiry", "Replied", and "Booked Appointment", then tag every open conversation you have. Within 15 minutes you'll have a live view of every pending inquiry from your 50 monthly leads — no spreadsheet, no software subscription.
What to ignore
You do not need Wati, AiSensy, or Interakt at this stage — those WhatsApp API tools are built for clinics running hundreds of conversations with staff teams, and they start around ₹2,500–₹5,000/month for something you can do free. Zoho Bigin and Freshsales reps will tell you this is a pipeline problem; it isn't. It's a labeling habit you don't have yet.
What doing nothing costs you
A conservative 10% slippage on your 50 inquiries means roughly 5 lost leads per month. Assuming a ₹800 average first-visit consultation in Mumbai, that's around ₹48,000/year walking out before you even reply.
When to revisit this
When you hire a second person who also handles inquiries and you start stepping on each other's replies — that's when a shared inbox tool becomes worth paying for.