Products & Tools I've Built
Live SaaS apps and AI tools I designed, built, and deployed end-to-end. Each one has its own terms — open it to see what applies. Need something custom? Let's talk.
Products & Tools
Everything below is live and maintained by me. Some need a sign-up, and pricing varies by tool.
QueueSlip
Running late? Send one shareable link with a live ETA, reason and checkpoint updates — privacy-safe, auto-expires, no app, no signup.
Bulk QR Code Generator
Paste a list of URLs or import a CSV and instantly generate QR codes in bulk — customize colors, add a logo, and download all as a ZIP.
AI Exam Sprint Planner
Paste your syllabus and get a day-by-day study plan with AI quizzes — track streaks, readiness score, and sprint to your exam date.
Class2Questions
Upload any lecture file — PDF, PPTX, DOCX — and instantly get categorised MCQ, short-answer, and long-answer exam questions with flashcards, topic coverage map, and Anki/CSV export.
Text to PDF
Convert any text to a professional PDF document with formatting and styling options.
AirCare India — Live AQI Checker
Check real-time air quality index for 800+ Indian cities — get PM2.5 breakdowns, 24h trend charts, and AI-powered health tips based on your planned activity.
Meta Tag Generator — AI-Powered SEO Tags
Generate perfect SEO, Open Graph & Twitter Card meta tags instantly — live previews for Google, Facebook & X, AI suggestions, JSON-LD structured data, and copy-ready code.
Frequently Asked Questions
What to expect before you open a tool.
It depends on the tool. Some are free to use, some are ad-supported, and others run on a subscription or credit-based plan. Each tool states its own terms — open it to see what applies.
Some tools work straight away with no sign-up. Others need an account so your data, history, or credits can be saved to you. The tool will tell you before you start.
I do — Niraj Kumar. Each one is designed, built, deployed, and maintained by me end-to-end. They are live products, not demos or screenshots.
Yes, please do. Send me a note through the contact page with the tool name and what happened, and I'll look into it.
Yes. If you need a SaaS product, AI tool, or automation built from scratch, or a variation of one of these, go to the contact page and tell me what you have in mind.
Need a Custom Product?
Have an idea for a SaaS, AI tool, or automation system? I'll design and build it from scratch to fit your exact requirements.