Question: I'm looking for an app that can translate PDF documents and provide language learning resources.

PDF GPT is a powerful AI-powered tool that provides capabilities like translation, summarization, and citation for PDF documents. It supports over 90 languages and works with various types of documents including books, legal papers, and research papers. The Pro version offers unlimited file uploads and chat features for $6/month, making it a cost-effective solution for frequent users.

For those focused on English language learning, eJOY is a comprehensive platform. It offers PDF translation, AI-assisted explanations, video summarization, and interactive learning games. With different pricing plans, eJOY caters to various needs, from basic to advanced English learning, making it suitable for students, professionals, and individuals aiming to improve their English skills.

Another noteworthy tool is Immersivetranslate, a free browser extension that translates web pages, documents, and video subtitles in several languages. It features instant translation of PDF documents while preserving formatting, which can be especially useful for researchers and students needing quick and accurate translations.