Craffr (B2B lead monitoring tool) is retired.Get the code →or tryFree Reddit Lead Finder

Product Builder

Building B2B SaaS from 0→1. Detailed case studies, open-source tools, honest post-mortems.

Free Tools

Open-source, no signup required

Find targeted Reddit leads with AI-powered intent detection

Calculate optimal freelance rates based on expenses and goals

Analyze and optimize your email response patterns

Data-driven supply chain & operations analysis

Two product experiments from 0→1. Full transparency on decisions, outcomes, and learnings.

PROBLEM

Freelancers miss high-intent leads buried across Reddit, HN, and Indie Hackers — by the time they find them, someone else has already replied.

BUILT FOR

Solo freelancers and small agencies ($5K-50K projects)

KEY DECISIONS

AI lead scoring vs keyword matching, two-process architecture for rate limits, pricing model experimentation

OUTCOME

50 trial users, 0 paid conversions → retired product. Full post-mortem inside.

PROBLEM

Micro-sellers in emerging markets (home bakers, small vendors) need a storefront but can't afford Shopify and their customers live on WhatsApp.

BUILT FOR

Small merchants in India with <100 products, no tech skills

KEY DECISIONS

WhatsApp-first checkout vs in-app, Supabase vs Firebase, freemium vs paid-first

OUTCOME

Working product with cart, checkout, payments. Pivoted to property listing. Lessons on ICP validation inside.