2sBrain vs DocuAsk

2sBrain — Your second brain, powered by AI. You read a lot but remember little? Documents, books, and notes scattered everywhere, slowly forgotten? 2sBrain turns them all into a personal knowledge base: AI reads for you, summarizes, connects knowledge across documents, and answers any question — based on exactly what you've added. ADD DOCUMENTS FROM ANY SOURCE • Scan books and paper documents with your camera — capture multiple pages in a row, AI analyzes instantly • Upload PDFs and many other file formats • Write notes in a rich text editor, insert images, one tap for AI analysis CHAT WITH YOUR OWN KNOWLEDGE BASE • Talk to the AI Assistant about your documents: summarize, explain, compare • Every answer comes with document sources and related concepts • Save valuable insights so your knowledge keeps growing and evolving over time KNOWLEDGE WIKI — CONNECTED KNOWLEDGE • AI extracts core concepts from each document • Concepts are cross-linked between documents into your personal knowledge graph • The more you add, the smarter your second brain becomes ANNOTATE & SIGN PDFS DIRECTLY • Highlight key passages and draw freely with a full pen kit: pencil, ink pen, marker, eraser, ruler, and custom colors • Add your signature to documents — sign contracts and forms right on your phone, no printing needed • Insert text notes anywhere on the page • Undo, erase, and edit freely; every change is saved right into the document • Feels like writing on real paper — but never gets lost LEARN LANGUAGES FROM WHAT YOU READ • Tap any word while reading for an instant definition, without leaving the page • Smart dictionary auto-detects the language: English, Chinese, Japanese, Korean, German, Vietnamese • Save words to vocabulary notebooks by topic • Review with flashcards — flip and swipe through your words SYNC ACROSS ALL YOUR DEVICES • Use it instantly without an account; your data stays safe on your device • Sign in to sync documents, notebooks, and chat history across devices 2sBrain is for students preparing for exams, engineers reading technical docs, language learners, and anyone who wants what they read to actually stick. Download 2sBrain for free — and start building your second brain today.

Stop searching through pages. Ask your PDF questions and get instant, accurate answers — powered by AI. DocuAsk lets you upload any PDF — contracts, research papers, textbooks, reports — and chat with it like a knowledgeable assistant. Every answer is grounded in your document, with page references so you can verify instantly. KEY FEATURES: Instant AI Chat Upload your PDF and start asking questions right away. No setup, no waiting. Cited Answers Every response shows exactly which page it came from — no guessing, no hallucinations. Any Document Type Contracts, research papers, manuals, textbooks, reports — DocuAsk handles them all. Multiple Documents Keep your important files organized and ready to query anytime. 100% Private Your documents are processed securely and never stored on external servers beyond what's needed to answer your question. Fully GDPR compliant. Perfect for: Students reviewing textbooks and papers Professionals analyzing contracts and reports Researchers extracting insights from long documents Anyone who needs answers from a PDF, fast Free to try — ask your first questions at no cost. Upgrade to Pro for unlimited questions and larger documents. Subscription terms: Payment will be charged to your iTunes Account. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Privacy Policy : https://vayronapps.com/privacy.html Terms of Use (EULA): Apple Standard EULA : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/