"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.
Every stack needs five jobs covered: a daily chatbot, a writing helper, an image generator, a research tool, and a meeting summarizer. The free tiers cover all five right now. A chatbot app like ChatGPT or Claude for daily questions, Perplexity for research with citations, free tiers of the creative tools. Write down your five jobs, assign one free tool to each, and you have got a stack. That is the whole method a pick my AI stack app free would use, minus the download. An AI tool comparison quiz app on iOS or Android can help order the candidates if you are stuck.
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 discover they need one subscription, not five. The stack that survives is the boring one: two or three tools you open daily, everything else deleted. This is also where a mobile app to track tool migration progress earns its keep later, when you swap a paid tool out.
Revisit quarterly. Tools change fast, prices change faster, and January's best stack is rarely October's best. Fifteen minutes every three months keeps you from paying for last year's winner.
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