// Custom software & products
Custom Software Development in Delhi NCR
Software built around how your business actually works — plus two finished products you can install today: BillPro for GST billing and GymPro for gym memberships. Offline, installable, and your data stays on your own machine.
Custom software development in Delhi NCR
RS Labs builds custom software for businesses across Delhi NCR — Delhi, Noida, Gurgaon, Ghaziabad, and Faridabad. Two of those products are on this page: BillPro, GST billing software for retail shops, and GymPro, membership and billing software for gyms. Both started the same way most of our work does — a business running on spreadsheets, a bill book, and WhatsApp, losing hours a week to work a computer should be doing. You can buy either one, or we can build the equivalent for your own workflow.
What custom software replaces
Billing & invoicing
GST-correct invoices with automatic CGST, SGST, and IGST splits, HSN codes, unbroken invoice numbering, and reprints. BillPro does exactly this for retail counters today.
Membership & renewals
Members, plans, add-ons, dues, expiries, and receipts tracked automatically instead of in a register. GymPro is the shipped version of this for gyms and studios.
Inventory & stock
Know what you actually have, what's moving, and what to reorder — with barcode or IMEI lookup rather than a manual count.
CRM & customer records
One place for customers, history, and follow-ups, instead of contacts scattered across phones and notebooks that leave when a staff member does.
Reports & dashboards
The numbers that actually tell you how the business is doing — daily collection, outstanding dues, top items, period summaries — exportable to PDF for filing or for your accountant.
Workflow automation
The repetitive task somebody does every single day, done by software instead. Usually the fastest return on the whole project.
Desktop, web, or both
Not everything belongs in the cloud, and we won't pretend otherwise. A shop counter that must keep billing when the broadband drops needs installable desktop software with local data — which is why BillPro and GymPro are Windows applications built on Python and Qt with a local SQLite database and one-click backup. A business with several branches or staff who need access from anywhere is better served by a web application. Some need both, with a desktop client syncing to a central system. We work out which of those your business actually is before writing anything, rather than defaulting to whichever is easier to sell.
Buy a product, or have one built
Ready to install
BillPro and GymPro are finished products you can download and run today. No implementation project, no yearly licence to re-buy, and your data stays on your own machine.
Customised for your business
If a product is close but not exact, we adapt it — your fields, your reports, your invoice layout, your workflow.
Built from scratch
If your process is genuinely your own, we build software around it rather than asking you to bend your business to fit a template.
Honest advice first
If off-the-shelf software already solves your problem for less than we'd charge, we'll say so. Selling you a build you don't need costs us the relationship.
// Questions
Custom software — your questions
How much does custom software cost?+
It depends on the features, integrations, and number of users — anyone quoting a price before understanding your requirement is guessing. Tell us what you need and we'll give you a specific, itemised estimate, free. For BillPro and GymPro, pricing is shared on request rather than published here, because it depends on your setup.
Is BillPro or GymPro a monthly subscription?+
No. Both are installable software you run on your own PC — there's no yearly licence to re-buy and no monthly SaaS bill. Get in touch and we'll walk you through pricing for your shop or gym.
Does the software work without internet?+
Yes. BillPro and GymPro are fully offline desktop applications. Billing, receipts, reports, and printing all work with no connection, so the counter or front desk keeps running even when the broadband is down.
Where is my business data stored?+
On your own PC, in a local database. Nothing is uploaded to us or to any cloud service. You own your data — take backups from the Backup and Restore screen and keep a copy on a pen drive or external drive.
Are the GST invoices compliant?+
Yes. Invoices carry your GSTIN, HSN codes, and the correct CGST/SGST or IGST split based on the customer's state, with sales and GST summaries you can export to PDF for filing.
Can you customise BillPro or GymPro for my business?+
Yes — your fields, your report formats, your invoice layout, your workflow. Tell us where the standard product doesn't fit and we'll quote the change.
Can you replace the spreadsheet my business runs on?+
That's most of our work. If your orders, customers, stock, or dues live in Excel, WhatsApp, and notebooks that don't talk to each other, we digitise that workflow into one system. BillPro and GymPro both started exactly that way.
Do you provide support and updates?+
Yes. Support terms are agreed up front as part of the scope, so there's no surprise bill later. Both products are on their second and third releases, and updates are a free download from their pages.
Explore what else we build
If you're looking for custom software development in Delhi NCR — or you run a shop or gym and want billing software that works offline and keeps your data on your own machine — tell us what's slow, messy, or manual right now. We'll tell you what it would take to fix, free.
Start a project →