Run your entire gym from one brain.
Front desk, billing, personal training, recovery, access, staff ops, retention and an AI owner's cockpit — one connected system instead of ten disconnected tools.
- 1
- — login for the whole gym
- 40+
- — workflows live in V1
- ₹0
- — hidden fees, your data yours
Why centralized wins
Scattered tools create blind spots. One kernel connects every role.
Scattered tools
- Register, Excel, 3 WhatsApp groups
- Missed renewals slip through
- PT schedules trapped on a phone
- Owner finds out too late
- Branches are islands
One Fitness Kernel
- Billing, dues & GST auto-tracked
- Every session in one record
- Weekly AI digest for owners
- AI churn call list for reception
- All branches, one truth
One source of truth
Members, money, sessions, and staff — synced in real time.
Owner's cockpit
Digest, retention risk, and revenue leaks without spreadsheet archaeology.
AI only works centralized
Churn lists, payment recovery, and insights need connected data.
Scales to many gyms
Tenant isolation, per-gym branding, and chain-wide analytics.
One platform, every role
Owner
Digest, revenue leaks, settings, and every front-desk action.
Receptionist
Intake, payments, dues, check-in, leads, and appointments.
Personal trainer
Assigned clients, session logs, requests, and progress.
Manager & floor
Attendance, staff, facility reports, and maintenance.
Maintenance
Tickets, WhatsApp updates, and facility issue tracking.
Member
Membership, classes, QR check-in, streaks, and reminders.
V1 — all live
Production-ready workflows shipping today.
Intelligence that pays for itself
AI tells reception who's about to quit
Risk scores and ranked call lists — before members ghost you.
Dues collect themselves
WhatsApp + UPI + email ladder — in-app first, high-value nudges when needed.
Weekly AI business digest, Monday 9am
Highlights, at-risk clients, and one operational recommendation.
Pricing
Billed annually · 2 months free
Sparkplug
₹4,999/mo
Single gym: billing, intake, check-in, member app.
Included from day one:
- Membership plans, GST invoices & UPI dues
- QR check-in with door access control
- Staff attendance & shift records
- Dues reminders & payment recovery
- Member app: streaks, receipts & reminders
Flywheel
₹9,999/mo
+ PT, recovery, classes, leads, maintenance.
Everything in Sparkplug, plus:
- PT scheduling, session logs & requests
- Recovery facility bookings
- Leads, intake & public self-serve join
- Class booking with waitlists
- Maintenance tickets, trainer scorecards & referrals
Afterburner
₹12,999/mo
Everything + all AI + branding + priority support.
Everything in Flywheel, plus:
- AI insights on every PT session
- Member risk scores & churn call list
- Revenue leak detector
- Weekly AI owner digest & Ask AI
- Transformation hub, per-gym branding & priority support
Constellation
from ₹29,999/mo
Chains: all branches, cross-location analytics, SLA.
Everything in Afterburner, plus:
- Every branch under one login
- Per-branch feature flags & role packs
- Platform console for the whole chain
- Verified tenant isolation on every request
- Guided onboarding, migration & SLA
Gets better every month
Afterburner & Constellation get every new feature first.
Questions Indian gym owners ask
Direct answers about billing, pricing, and how Fitness Kernel fits a single-location or multi-branch gym in India.
- What is Fitness Kernel?
- Fitness Kernel is gym management software built for Indian gyms. It connects front desk, GST billing, UPI dues, personal training, class booking, QR check-in, staff ops, and AI retention in one web app — sold by Vyuha Systems.
- Does Fitness Kernel support GST invoicing?
- Yes. Plans include GST-compliant membership invoices and rupee billing stored in integer paise. Your gym configures tax details; members receive receipts through the member app.
- How do members pay dues in India?
- Fitness Kernel tracks dues in INR and supports UPI-first recovery workflows with WhatsApp and email reminders. Payment recording and overdue lists are built into the admin dashboard.
- How much does Fitness Kernel cost?
- Published plans start at ₹4,999 per month (Sparkplug) and scale to Flywheel (₹9,999), Afterburner (₹12,999), and Constellation (from ₹29,999 for multi-branch chains). See the pricing section on this page for what each tier includes.
- Is each gym's data isolated?
- Yes. Every gym runs on a verified tenant subdomain with role-based access and tenant isolation enforced on each request. Staff only see data for their gym.
- Who builds and supports Fitness Kernel?
- Fitness Kernel is built and sold by Vyuha Systems, a Rajkot-based consultancy that designs business systems. WhatsApp us from this page (or email info@vyuhasystems.com) to book a demo.
Secure & isolated
Verified tenant isolation and role-based access on every request.
Your data, always yours
Export any time. No lock-in, no hostage pricing.
Built for India
GST, UPI, WhatsApp, and rupee-first money — integer paise throughout.
Ready to run your gym from one brain?
Message us on WhatsApp for a 20-minute walkthrough on your own gym's data — live in a weekend.