Update tháng 4: 3 micro-SaaS products của mình, tất cả powered by AI:

1. ReplyFast — AI email responder cho freelancers. MRR: $800. Stack: Next.js + Claude API.
2. QuizAI — tạo quiz từ PDF/YouTube cho teachers. MRR: $650. Stack: Next.js + GPT-4o-mini.
3. LogoSnap — AI logo generator cho SMEs VN. MRR: $550. Stack: Next.js + DALL-E 3 + Stable Diffusion.

Tổng MRR: $2,000. Solo founder, no employees, no funding.

Bí quyết: Mỗi product solve 1 specific pain point cho 1 specific audience. Không build "platform", build "tool". Ship fast, iterate based on user feedback.

Chi phí vận hành: Vercel Pro ($20) + Supabase ($25) + AI APIs (~$150) + domain ($30) = ~$225/month. Margin: ~89%.

Next goal: $5K MRR trước cuối năm. Đang build product #4: AI-powered Zalo chatbot builder cho SMEs VN.

Indie hacker life is good 🚀