"Pick my AI stack" is the request I hear most. Just tell me which tools to use for everything. No single app nails it yet, so here is the free playbook that gets you the same result in an afternoon: think in jobs, not tools. - A daily chatbot: ChatGPT or Claude on the free tier for daily questions. - A research tool: Perplexity for finding answers with citations. - An image generator: the free tier of one leading tool, learn it properly. - A meeting summarizer: whichever free tier covers your weekly call count. - A writing helper: usually covered by the daily chatbot already. The classic mistake is stacking paid subscriptions before the free tiers run out. Use the free version until you hit a real limit twice, then pay for exactly that tool. Most people need one subscription, not five. StackAudit recommends the optimal 3 to 5 tool AI stack for your profession with pricing and setup guides for $4.99 one-time unlock.