Neon - Free tier: 10 projects, up to 0.5 GB storage, 190 compute hours Supabase - Free tier: 2 active projects, up to 0.5 GB storage, 50k MAU Cloudflare D1 (SQLite, not PostgreSQL) - Free tier: 5M rows read/day, 100k rows written/day, 5 GB storage - Paid: First 25B reads/month free then \$0.001/million, first 50M writes/month free then \$1.00/million, storage \$0.75/GB-month after 5 GB