60 Days of StudyOS — 5,000+ Students, Not One Rupee on Ads

By StudyOS · 2026-07-16

One month ago, we told you 2,500 students had found StudyOS in 30 days, without a single ad.

Thirty days later, that number is past 5,000. Still zero rupees spent on advertising. Still just word of mouth — a parent telling another parent, a student sharing a link in a WhatsApp group, a teacher mentioning it in class.

We didn't expect month two to double month one. We're not going to pretend we saw it coming.

What changed since Day 30

Day 30 was about breadth — getting every class from 5 to 12 onto the platform as fast as we honestly could. Day 60 has been about depth, and about a few decisions that weren't fun to make but felt necessary.

Here's what's new:

• Class 11 and 12 Humanities, fully live — Political Science, History, Geography, Sociology, Psychology, all four subjects, notes grounded in the actual NCERT PDFs, not generic internet content
• Psychology added for Class 11 and 12 — a subject almost nobody builds proper content for
• Every subject went deeper — Assertion-Reason questions tripled, Case-Based Questions more than doubled, and every chapter now has structured notes instead of a plain summary
• We independently audited close to 42,000 questions, by hand and with AI cross-checking. Only 26 had a wrong answer key. We fixed all 26.
• We removed a feature — the "upload your own notes" tool wasn't reliable enough, so we shut it down rather than leave something broken live. We wrote about why.

The numbers, as of today

• 806 chapters, Class 5 to 12, every major subject
• 24,185 MCQs, graded Easy to Hard
• 10,637 Assertion-Reason questions
• 13,806 Case-Based sub-questions — the format that's now 25% of every CBSE paper
• 25,536 Q-Bank questions for exam-style practice
• 22,783 real past year board questions
• 2,110 daily practice sets
• 270 full mock papers, board pattern, board timing
• Just over 1,10,000 practice questions in total

What surprised us this month

The map got wider, not narrower. Chennai and Bengaluru still lead, but the spread is what struck us. Jaipur, Chandigarh, Lucknow and Dehradun in the north. Kolkata, Patna and Bhubaneswar in the east. Ahmedabad, Surat and Nagpur in the west. Coimbatore, Madurai and Kochi alongside the big southern metros. And outside India — Dubai and Sharjah, then Doha in Qatar, then Kuwait City. CBSE clearly doesn't stop at the border. Indian families abroad are using StudyOS too.

Trust compounds slower than growth, and that's fine. We spent real time this month on things nobody was forcing us to fix — auditing tens of thousands of questions we'd already shipped, shutting down a feature that wasn't good enough. None of that shows up in a signup chart. We think it matters more than what does.

What's still not done

A faster experience on slow connections. A proper mobile app, not just a website. More mock papers for classes below 10. We know the list, and it's still long.

One request, same as last time

If StudyOS has helped once — you, your child, a student you teach — tell one more person. That's the entire growth strategy, and so far it's the only one that's worked.

— Santanu & Anushri
Founders, StudyOS