HoneyBook hiked prices 89%. AND.CO shut down. Bonsai got acquired. Three freelancer tools died in two months. Stampwerk replaces the 80% that matters at $12/mo instead of $59. AI writes full proposals from 5 inputs. Not template-fill. Structured output from Llama 3.3 70B. Accepted proposal auto-generates a contract. Signed contract auto-creates a Stripe invoice. Overdue? A 3-step daemon sends escalating reminders so you never chase clients. 30-second onboarding. Free tier included.

I kept finding the same security bugs in AI-generated code. Copilot autocompletes SQL injection. Cursor pastes keys in files. Default patterns, not edge cases. Existing tools don't serve solo devs. Snyk is $25+/mo. Semgrep needs custom rules. Critik scans with regex/AST, then AI reviews each finding with full file context. It knows eval() in a test isn't eval(user_input) in a handler. pip install critik && critik scan . Open source. Free tier. No config.