NoteTube — AI Study Tool for Students

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Key Highlights938 organic users in 4.5 months — zero paid marketing, 100% organic growthLive iOS and Android apps on App Store and Google Play with real install base and reviewsFull-stack monorepo — Next.js 15 web app, Expo React Native mobile, FastAPI backend5 AI providers integrated — OpenAI, Google Gemini, Anthropic, Meta Llama, MistralStripe Connect marketplace approved — rare and difficult to obtainPremium .ai domain — notetube.ai30,000+ AI-generated flashcards and 34,000+ quiz questions created by real usersSM-2 spaced repetition algorithm implemented end-to-endRebuild cost estimated at $100K–$150K — you're acquiring below replacement valueAbout the BusinessAn AI-powered learning platform where students upload any content — PDFs, YouTube videos, articles, images, or plain text — and the platform generates flashcards, quizzes, summaries, notes, and lets them chat with their content. Launched December 2025 by a solo full-stack founder. Operates as a Delaware C-Corporation with Stripe payments and Mercury business banking. The product sits at the intersection of AI tooling, EdTech, and the fast-growing creator-economy model for educators.Business ModelFreemium subscription — free plan offers 1 study session per month; Pro plan ($4.99/month or $49/year) unlocks unlimited sessions and all featuresMobile in-app purchases — live on both Apple App Store and Google PlayMarketplace scaffolding — Stripe Connect approved for educator-led content sales (not yet monetized; represents upside for the new owner)7-day free trial on Pro with card upfrontKey MetricsMetricTotal registered users938Launch dateDec 3, 2025Age at listing4.5 monthsNew users (Feb 2026)390New users (Mar 2026)301New users (Apr 2026, first 17 days)224Study sessions created1,054AI-generated flashcards33,857AI-generated quiz questions34,413Summaries generated3,565Notes created by users6,241Paid acquisition spend$0OperationsSolo-operated. Current time commitment is approximately 5–10 hours per week for bug fixes, user support, and minor feature work.Fully automated: deployments (Firebase App Hosting), error monitoring (Sentry), subscription billing (Stripe), usage tracking, push notifications, backups.Monthly operating cost: ~$370, broken down: Google Cloud Platform (Gemini API + Firebase + Cloud Run) ~$300, Supabase database ~$25, Google Workspace ~$10, domain amortized ~$3, and minor Stripe fees.All AI provider API keys live in the FastAPI service (security boundary); the Next.js and mobile apps only call the backend.Comprehensive documentation (CLAUDE.md, docs/APP_ARCHITECTURE.md, and ~20 other internal docs) makes the codebase transferable to a new owner immediately.Customers938 registered users, 100% acquired organicallyPrimarily students and self-directed learners across multiple geographies20 monthly active chat users in the last 30 days (chat is one of five learning modes; flashcard and quiz usage is substantially higher based on content volume)Typical user workflow: upload study material → AI generates flashcards / quiz / summary → review with spaced repetitionNo customer concentration risk — users are distributed, not dependent on any single accountFinancialsOperating since December 3, 2025. Full P&L attached to this listing.Trailing 4.5-month revenue: $64.69 USD (Stripe subscriptions)Trailing 4.5-month total expenses: $1,726Monthly burn: approximately $370, driven primarily by GCP/Gemini API usageCurrent MRR: ~$15 (untuned paywall — see Growth Opportunities)Paid subscribers via Stripe: 2–3 activeStripe fees: $0.40 total over 8 months (after a $5 Stripe-applied adjustment credit)Monetization is deliberately light during this period. The product shipped with a generous free plan and has not had paywall tuning, pricing experiments, annual plan promotion, or mobile IAP push. Revenue reflects product availability, not monetization effort.Growth OpportunitiesPaywall optimization — the free plan was recently tightened from 2 to 1 study session per month. First full month of data will reflect meaningfully higher conversion. Industry-standard conversion for AI study tools is 2–5% of free users → paid.Mobile in-app purchases — IAP is fully plumbed on iOS and Android but has not been aggressively promoted in onboarding. Mobile users convert 2–3x higher than web for consumption apps.Annual plan push — annual plan exists ($49/year vs. $4.99/month) but is not featured prominently. Standard 25–35% of paying users select annual, raising ARPU and reducing churn.Educator marketplace activation — Stripe Connect is approved and the marketplace scaffolding is built. Not yet launched. Turning on educator onboarding could unlock a second revenue stream (creator-economy model).Untapped distribution channels — zero spend on Product Hunt, Reddit, Indian EdTech communities, or paid acquisition. All 938 users are organic.SEO tailwinds — site has Schema markup, JSON-LD, sitemap, and a YouTube-summarizer landing page that drives organic traffic. A buyer with SEO skills could compound this quickly.International expansion — the AI pipeline supports multiple languages; no localized marketing has been attempted.Reason for SellingBuilt solo as a founder over 4.5 months. The product has reached genuine product-market fit on the usage layer — users generate tens of thousands of flashcards and quiz questions, and growth is sustained and organic. However, the product deserves a full-time operator who can invest in monetization, marketing, and marketplace activation. I'm handing it off cleanly with comprehensive documentation and 30 days of post-sale support.What's IncludedSource code — full monorepo on GitHub (web + mobile + backend)Domain — notetube.ai (premium .ai TLD)Supabase project — Postgres database with 938 users and all historical dataGoogle Cloud / Firebase project — hosting + Analytics history + Gemini API configurationStripe account — including rare Stripe Connect marketplace approvalApp Store Connect listing — iOS app with install base and reviewsGoogle Play Console listing — Android app with install base and reviewsBrand assets — logo, marketing copy, Warm Editorial design systemDocumentation — CLAUDE.md, architecture docs, marketplace strategy docs, and ~20 other internal referencesPost-sale support — 30 days of email + video support for the new owner, plus 1–2 onboarding calls