Screenshots
Platform Screenshots
Live screenshots from the production deployment at invoice.zplys.ai
Platform Overview & Strategic Summary
Billo Invoice Management is a cloud-native, multi-tenant SaaS platform that enables Indian small and medium businesses to create GST-compliant invoices, automate payment collection, and manage their receivables — all from a single web application. The platform targets chartered accountants, accountants, freelancers, and service-based SMBs in India's 63M+ MSME market.
Built on modern async Python (FastAPI) with a Next.js frontend and deployed on Microsoft Azure, the platform is currently in production with its first vendor partner. The architecture is designed for multi-tenant scalability from day one, with vendor-level data isolation, per-vendor communication configuration, and a super-admin layer for platform operations.
Billo differentiates through WhatsApp-native communication, a unique proforma-to-invoice conversion workflow, automated 5-tone reminder escalation, and a client portal that requires no login — features that address real pain points for Indian SMBs that existing competitors either lack entirely or implement partially.
End-to-end cloud-native architecture with async I/O throughout. No legacy sync bottlenecks. Every layer is independently scalable.
Head-to-head comparison against Vyapar and Zoho Invoice — the two dominant players in the Indian SMB invoicing space.
| Feature | Billo | Vyapar | Zoho Invoice |
|---|---|---|---|
| Invoice Creation (GST) | Yes | Yes | Yes |
| Proforma Invoices | Yes | Yes | Yes |
| PI to Invoice Conversion | Yes Unique | No | No |
| WhatsApp Delivery | Yes | Partial | No |
| Automated Reminder Escalation (5 tones) | Yes | No | Partial |
| Client Portal (No Login) | Yes | No | Partial |
| Multi-Company Support | Yes | Yes | Yes |
| 11 Report Types | Yes | Yes | Yes |
| Service Catalog | Yes | Yes | Yes |
| Payment Tracking | Yes | Yes | Yes |
| Auto Receipt Generation | Yes | Yes | Yes |
| Email Templates (3 Themes) | Yes | Partial | Yes |
| Vendor Impersonation (Support) | Yes | No | No |
| Per-Vendor WhatsApp Config | Yes | No | No |
| SMTP White-Label Email | Yes | No | Yes |
| E2E Test Suite | 230+ Tests | Unknown | Unknown |
| Recurring Invoices | Phase 4 | Yes | Yes |
| Credit/Debit Notes | Phase 4 | Yes | Yes |
| Expense Tracking | Phase 5 | Yes | Yes |
| Inventory Management | Phase 6 | Yes | Partial |
| E-Invoicing (IRN) | Phase 7 | Yes | Yes |
| Payment Gateway (Razorpay) | Yes | Partial | Yes |
| Self-Service Signup + Free Trial | Yes | No | Yes |
| Theme Customization (8 themes + dark mode) | Yes | No | Partial |
| Smart Excel Import (Clients) | Yes | Yes | Yes |
| GSTIN Quick Fill | Yes Unique | No | No |
| Background Notifications (Non-Blocking) | Yes | Unknown | Yes |
| Invoice Cancellation | Yes | Yes | Yes |
| Notification Tracking (Email + WhatsApp) | Yes | No | Partial |
Nine key differentiators that position Billo uniquely in the Indian invoicing market.
Unique proforma-to-permanent invoice conversion with discount negotiation and side-by-side comparison. No competitor in the Indian market offers this workflow, which is critical for service-based businesses that routinely negotiate pricing.
Invoice delivery, payment receipts, and 5-tone escalating reminders via the WhatsApp Business API. In India, WhatsApp has 500M+ users — making it the most effective channel for payment collection.
True data isolation per vendor at the query level. Super admin impersonation for support with audit logging. Per-vendor email and WhatsApp configuration for white-label deployments.
FastAPI + asyncpg delivers high throughput with non-blocking I/O throughout the entire stack. No legacy synchronous bottlenecks. Built for concurrent workloads from the ground up.
Automatic CGST/SGST/IGST detection via Place of Supply logic. Udyam Number support for MSMEs. TDS deduction tracking. GSTIN, PAN, and IFSC validation at the schema level.
230+ automated tests (pytest), 14 E2E test suites (Playwright), CI/CD via GitHub Actions, and zero-downtime deployments. Quality is a first-class concern, not an afterthought.
Vendors can sign up, start their 14-day free trial, and begin invoicing within minutes — no sales call, no demo required. Subscription managed via Razorpay with automated renewal reminders.
8 professionally designed color themes with dark/light mode support. Users personalize the interface to match their brand or preference — a rare feature in the SMB invoicing segment.
Azure Container Apps (consumption plan), PostgreSQL Burstable B1ms, and no Redis or Celery dependency. The entire production stack runs at an estimated ~$50/month for initial scale — enabling aggressive pricing without margin compression. APScheduler runs in-process, eliminating the need for a separate worker tier.
Short video demos of key platform workflows, recorded from the live production deployment.
GST-compliant invoice with auto-calculation
Unique proforma-to-permanent conversion
Professional PDF-ready HTML preview
End-to-end payment recording
5-tone escalation configuration
11 report types with export
Self-service registration with 14-day trial
Plan management with Razorpay checkout
8 color themes with dark/light mode
Cancel with documented reason and audit trail
Phased delivery plan from Q2 2026 through 2027+, prioritizing features that drive retention and expand addressable market.
Key metrics that demonstrate engineering maturity and production readiness.
Enterprise-grade security controls designed for multi-tenant SaaS with Indian regulatory requirements.
JWT access + refresh token rotation. Short-lived access tokens (15 min), long-lived refresh tokens with server-side blacklisting.
bcrypt hashing with password history enforcement (last 5 passwords). Strength validation rules prevent weak credentials.
Every database query filters by vendor_id extracted from the authenticated user's JWT. Cross-tenant access is architecturally impossible.
Super admin impersonation is logged with timestamp, target vendor, and action. Full audit trail for compliance.
CORS restricted to known origins only. No wildcard access. API rejects requests from unauthorized domains.
Regex validators for GSTIN, PAN, IFSC formats. All request bodies validated before reaching business logic.
No plaintext secrets in code or configuration files. All credentials injected via Azure Container App environment variables.
Azure Managed Certificate with automatic renewal. All traffic encrypted in transit. HSTS-ready configuration.
Production infrastructure on Microsoft Azure with consumption-based billing and automated CI/CD pipeline.
Live screenshots from the production deployment at invoice.zplys.ai
