If you're looking for a mobile app that gives you uncensored access to information from around the world, Perplexity is a good option. This AI-powered answer engine offers immediate answers to any question and supports English, French, German, Japanese, Korean, Simplified Chinese, Spanish and Hindi. File upload and analysis, AI-generated image tools and the ability to customize AI models make Perplexity good for individuals, researchers, students and professionals who need reliable sources of information. A basic tier is free but limited, but the Pro tier offers unlimited Pro searches and bigger file uploads for $20 per month.
Another good option is Semantic Scholar, a free AI-powered research service that lets scholars search for and read relevant scientific papers. It's got a mammoth catalog of more than 219 million papers across all scientific fields, along with powerful search tools, brief summaries and tools to cite papers and subscribe to research feeds. Semantic Scholar is good for researchers and developers who need a broad, free, subscription-free source of scientific information.
For a broader span of knowledge, Wolfram|Alpha is a computational knowledge engine that offers answers and insights in many subjects. It covers math, science, technology, society and everyday living, doing calculations, generating reports and offering image processing and file uploads. It's good for practical uses like work, school and home, and a premium version offers immediate access to its full abilities.