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App$$$Cheap: Roughly under $50, or under $15/month.

Perplexity

A search tool that answers in prose and cites the pages it read

Ask a question and it answers in prose, with numbered citations, rather than a page of links to open yourself. A live search runs underneath, so current questions land better than they do with a plain chat assistant. The basic level is free. Summaries can still misread the page they point at.

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App entry · notes paraphrased from cited sources, quoted excerpts copied from the transcript they link to. Not medical advice. Not affiliated with, endorsed by, or reviewed by anyone listed. How this works.