Engineering Services
App, website and software development for Indian businesses
We engineer the complete digital backbone for Indian retail stores, fashion boutiques, salons, and enterprises — customer ordering apps, lightning-fast web storefronts, GST billing counters, and private on-premise AI. All delivered at a fixed price agreed upfront with zero sales commissions.
One fixed price in writing — zero billing surprises
We do not bill by uncertain hourly rates or push opaque monthly retainer bloat. Whether you need a grocery delivery system with 3 synchronized apps or an air-gapped local AI agent server, you receive a single transparent quotation detailing exact timelines and deliverables before work begins.
Our core service domains
Every service is built custom for your brand, adhering to strict multi-tenant schema isolation and offline data resilience.
Mobile App Development
A real Android app for your shop or service — built, branded and published on Google Play under your name.
Website Development
A fast, mobile-first website that shows up on Google and turns searches into phone calls.
Billing & Invoice Software
Create a professional GST invoice in seconds, download the PDF, and know exactly who still owes you money.
Loyalty & Rewards
Give customers a reason to come back to you instead of the shop next door — without paying commission on every sale.
Society Management
Visitor entry, maintenance bills, notices and complaints — for the guard, the resident and the committee, in one system.
AI Agents
Software that does a specific job in your business — sorting bills, answering bookings, writing up products — instead of one more dashboard for you to fill in.
Private AI Setup
Ask questions of your own documents without a single file leaving your office — for the businesses that legally cannot use public AI tools.
How we deliver your software in 5 steps
A disciplined engineering lifecycle from initial workflow discovery to on-site hardware launch.
Discovery & Workflow Mapping
We analyze your physical store or business operations — inventory structure, order volume, staff workflows, and connectivity conditions — to define exact technical specifications.
Multi-Tenancy Schema Isolation
We provision a dedicated, isolated PostgreSQL database schema. Your customer records, pricing rules, and ledger history never mix with other tenants.
Native Flutter & Next.js Build
We engineer native Android mobile apps using Flutter (Riverpod state management, offline-first SQLite cache) and blazing-fast SEO web storefronts on Next.js.
Hardware Integration & Testing
We integrate physical peripherals including Bluetooth thermal receipt printers, handheld USB/Bluetooth barcode scanners, and automated WhatsApp order dispatch triggers.
On-Site Deployment & Staff Training
We configure admin tablets at your shop, train billing counter staff, verify live payment webhooks, and publish customer apps directly to the Google Play Store.
Need a custom technical roadmap?
Schedule a consultation with our engineering team to review your workflow and receive a detailed plan.
Technical specifications across services
Review the core technologies, deployment topologies, and hardware peripherals for each solution.
| Service Domain | Tech Stack | Deployment | Offline Mode | Hardware Compatibility |
|---|---|---|---|---|
| Mobile App Development | Flutter, Dart, Hive/SQLite | Google Play Store + APK | 100% Offline-First with Sync | Camera Barcode, Thermal Printer |
| Custom Websites | Next.js, React, Tailwind CSS | Cloudflare Pages Edge CDN | PWA Offline Caching | Responsive Mobile / Desktop |
| Billing & Invoicing | Flutter Desktop / Web, SQLite | Local PC / Android POS Tablet | Local DB with Auto-Sync | ESC/POS 58mm/80mm, Barcode Gun |
| Loyalty & Rewards (RPX) | PostgreSQL Append Ledger, RPC | Cloud Edge API + Merchant App | Cached Offline QR Scanning | Dynamic Customer Counter Display |
| Society Management | Flutter Guard App, Supabase | Android Guard Tablet + Mobile App | Local Gatepass Offline Queue | Dedicated Gatekeeper Tablet |
| Private On-Premise AI | Llama 3 / Mistral, Ollama, vLLM | Client On-Premise RTX GPU Server | 100% Air-Gapped Local Execution | NVIDIA RTX 4090 / A6000 Workstation |
Real businesses running on our software
Ashapura Super Store
GroceryFull retail digitization with 388 SKUs, 3 dedicated Flutter apps (Customer, Store Admin, Delivery Driver), and Bluetooth thermal billing.
Anidi Creation
FashionBespoke boutique catalog with 14-point custom tailoring measurement intake, automated WhatsApp order dispatch, and Cloudflare Pages CDN hosting.
Payal Salon
BeautyComplete salon management portal with live service catalog, direct WhatsApp appointment booking, and zero third-party commissions.
Why businesses choose Rupix Labs
- Fixed price agreed before we start — zero hourly billing surprises
- Built on production-hardened stacks running in live commercial storefronts
- You own your domain, Google Play developer listing, and full customer database
- Zero percent sales commission on your UPI and card transactions forever
- Hardware-tested on thermal ESC/POS receipt printers and barcode scanners
- Bilingual interface localization in Gujarati, Hindi, and English
Frequently Asked Questions
How does your fixed-price quoting work?
Before writing any code, we draft a detailed scope document listing all screens, database schemas, and hardware integrations. You receive one fixed price in writing. If a task takes longer than anticipated, you never pay extra.
Do you take any commission on our sales?
No. Unlike aggregator platforms that charge 15% to 30% per order, Rupix charges zero commission. 100% of customer payments route directly into your own bank account via your preferred UPI QR or payment gateway.
Who owns the domain, source code, and customer data?
You retain full ownership. Your website runs on your custom domain, your mobile apps are published under your company's Google Play Console developer account, and your customer database is exported whenever you require.
Can the apps work when store internet goes down?
Yes. Our mobile apps and billing systems are built offline-first using local encrypted SQLite databases. Billing counters can continue scanning barcodes, generating bills, and collecting cash without internet.
Do you provide on-site setup in Surat?
Yes. Because our engineering hub is in Surat, our team visits your store, salon, or office in person to configure thermal printers, barcode scanners, and train counter staff.
Based in Surat, Gujarat — On-Site Engineering
We engineer software for businesses nationwide, and we are locally headquartered in Surat — meaning our technical team can sit with you in person, test your counter hardware, and support your staff through deployment.