Andrew Miles Davis names his current favourite AI tool on this week's Cool Tools Tuesday, ChatGPT's Codex, detailing the range of applications he has built with it including a full CRM system, an invoice tracker, a goals-connected to-do list, a fitness interval timer, and a daily check-in app, and explaining why he prefers it to Claude Code on both consistency and credit efficiency. He also covers Edite, a simple image editing tool that offers one-click options for background removal, face swaps, age changes, style transfers, and professional headshots without needing to write a prompt. The episode closes with a free AI visibility checker that scores any website's presence across ChatGPT, Google AI Overviews, Gemini, Perplexity, and Copilot, generating a shareable infographic with a numerical score, key weaknesses, and top three recommended fixes. Subscribe to In AI Nutshell for three new tools every Tuesday with honest verdicts from someone building real things with them.