Codemistry builds fast, mobile-friendly websites, Android and iOS apps and custom CRM software, and keeps them running with website maintenance and redesign services. We work with businesses and startups all over India, operating 100% online.
Next.jsWebsites
ReactWeb apps
FlutterMobile apps
Android & iOSMobile apps
Node.jsBackend
LaravelBackend
TypeScriptCode quality
Tailwind CSSDesign
MySQLDatabase
PythonAI & automationFrom your first website to a full business app and CRM, one team designs, builds and maintains it, with clear pricing from day one.
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Fast, mobile-friendly, SEO-ready websites for businesses, shops, schools, clinics and startups: business sites, portfolios, e-commerce stores and custom web applications.
Android and iOS apps built with Flutter and React Native, from a lean MVP to a full product with login, payments, push notifications and an admin panel.
Custom CRM and business management software built around how your team actually works: leads, sales pipeline, follow-ups, billing, staff roles and reports.
Monthly website and app maintenance: security updates, backups, uptime monitoring, bug fixes, speed tuning and content changes, so your site never falls behind.
Turn an old, slow or outdated website into a modern, fast, mobile-friendly one: redesign, speed optimisation, SEO fixes and new features without losing your existing content.
Add AI to your website or business: customer-support chatbots, lead-capture bots, WhatsApp automation and workflow automation connected to your CRM.
In three years our team has delivered websites, apps and software for businesses of every size. These are the kinds of projects we build most often.
Professional websites for shops, service businesses, manufacturers and consultants that bring in enquiries from Google.
Online stores with product catalogue, cart, UPI and card payments, order management and delivery tracking.
Institute websites, admission forms, student and fee management, results and notice boards.
Doctor and clinic websites, appointment booking, patient records and reminder messages.
Property listing portals, tour and travel booking websites and enquiry management.
Lead tracking, follow-ups, quotations, staff targets and reports for growing sales teams.
Building something else? We work across every industry.
Tell us your ideaStraight answers, a fixed written quote and a team that stays with you after launch.
Partha Halder owns and runs Codemistry. Every project has a clear point of contact and the owner stays accountable for delivery.
Designers, web developers, app developers and testers work under one roof, so your website, app and CRM fit together.
You get a written quotation before any work starts and pay in milestones as work is delivered. No hidden charges.
You own the source code, design, domain and data. We hand everything over, so you are never locked in.
We work online over WhatsApp, phone and video, which keeps projects fast, affordable and transparent. For big projects we schedule dedicated video calls.
Free bug-fix support after delivery, then optional monthly maintenance for updates, backups and security.
Share your idea on WhatsApp, a call or the quote form. We ask the right questions and suggest the best approach.
We send a written quote with scope, timeline and milestone payments. Work starts only after you approve it.
We design and build in stages and share preview links, so you can check progress and give feedback throughout.
We launch on your domain, hand over code and admin access, and support you after launch.
Codemistry works online with businesses and startups all over India, from Delhi NCR, Mumbai, Bengaluru and Hyderabad to Kolkata, Guwahati and smaller towns. We build websites, apps and CRM software for clients anywhere in the country. Our team is based in Kalyani, West Bengal, and clients with larger projects can schedule a meeting with us.
Tell us about your website, app or software idea. We reply within 24 hours with suggestions and a price estimate. No obligation.
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Quick answers about pricing, timelines, meetings and ownership.
Codemistry is a web and app development agency. We build websites, Android and iOS mobile apps and custom CRM software, and we provide website maintenance and website redesign/upgrade services. We also add AI chatbots and automation to existing websites and businesses.
Websites start from ₹5,000 for a portfolio site and ₹10,000 for a business website. Mobile apps start from ₹15,000 for an MVP, custom CRM software from ₹10,000, and maintenance plans from ₹1,999 per month. Every project gets a fixed written quotation before work begins, with no hidden charges.
Yes. We work with businesses and startups across India, from Delhi, Mumbai, Bengaluru and Hyderabad to Kolkata and smaller towns. All projects are handled fully online over WhatsApp, phone and video calls.
We work 100% online, which keeps costs low and communication fast. We collaborate smoothly over WhatsApp, phone and scheduled video calls to plan requirements and review progress in detail.
A business website usually takes 1 to 3 weeks. Custom web applications and CRM software take 3 to 8 weeks, and mobile apps 4 to 10 weeks depending on features. You get a timeline with milestones in your quotation.
Yes. Once the project is paid for, you own 100% of the source code, design and data. We hand over the code, admin access and documentation, so you are never locked in with us.
Yes. Every project includes free bug-fix support after launch. After that you can choose a monthly maintenance plan for updates, backups, security and changes, or contact us only when you need something.
Still have a question?
Message us and we will reply within 24 hours.
Get a free quotation for your website, mobile app or CRM software. Clear pricing, milestone payments and full ownership of your project.
