# Otio: AI Research Assistant — Chat with PDFs, papers & notes > AI research assistant for organizing, querying, and summarizing documents. (iPhone/iPad app by Frontdoor Labs Ltd.) - Source: https://appshunter.io/ios/app/otio-ai-research-assistant/id6763363776 (this page in markdown: same URL + `.md`) - Developer: [Frontdoor Labs Ltd](https://appshunter.io/developer/1895281290) - Category: Productivity, Education - Price: Free with in-app purchases - Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 16.0 · 88 MB - Languages: American English, Arabic, German (Germany), Persian, European Spanish - Released: 2026-05-20 - Data updated: 2026-07-21 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/otio-ai-research-assistant/id6763363776/reviews.md ## What is Otio? Otio helps you bring scattered PDFs, links, notes, files, and recordings into one connected research library. Ask questions across your materials, generate summaries and drafts, and organize work into focused Spaces with AI chats that understand your context. With Otio in your pocket, you can: · Ask questions across your research library and get answers grounded in your sources, with citations you can tap. · Upload PDFs, Word documents, EPUBs, links, notes, images, audio, and videos. · Chat with selected files, links, or notes to explore specific materials in depth. · Summarize long papers, reports, articles, transcripts, and saved web pages. · Generate outlines, briefs, study notes, and first drafts from your research. · Search the web inside Otio — read pages, save sources, and bring them straight into chat. · Organize work into color-coded Spaces for papers, clients, classes, projects, and topics. · Import files from Google Drive, Dropbox, Box, OneDrive, Mendeley, Zotero, and Telegram. · Choose from top AI models — GPT, Claude, Gemini, Grok, DeepSeek, and more. · Listen to AI answers with built-in Read Aloud. · Generate AI images and edit them in the same chat. BUILT FOR DEEP WORK Whether you're reviewing academic papers, preparing client research, studying for exams, writing reports, or trying to make sense of too much information, Otio helps you move from scattered inputs to clear thinking. Otio helps you: ▸ Build a searchable library from your files, links, and notes ▸ Find answers without digging through every document manually ▸ Turn research into summaries, outlines, and drafts ▸ Keep chats and materials organized by project ▸ Capture ideas and sources before they get lost ▸ Work with your own knowledge, not just generic AI responses TRUSTED BY RESEARCHERS, STUDENTS, AND KNOWLEDGE WORKERS Otio is designed for people who read, collect, and create from large amounts of information. It helps you stay organized, understand faster, and write with the sources you already trust. SUBSCRIPTIONS Otio Free includes agentic AI, web research, and access to top AI models. Lite and Go unlock heavier upload limits, cloud connectors, multi-step research workflows, more Spaces, and Read Aloud. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions auto-renew unless turned off at least 24 hours before the end of the current period. Manage or cancel anytime in Settings → Apple ID → Subscriptions. Download Otio and start thinking faster. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://otio.ai/privacy ## Key features - Ask AI questions across research library - Upload PDFs, documents, links, and more - Summarize long papers and web pages - Generate outlines and first drafts - Organize work into color-coded Spaces - Import from cloud storage and reference managers - Choose from top AI models ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Otio Lite Yearly | $84.00 | per year | | Otio Lite Monthly | $7.00 | per month | | Otio Pro Yearly | $539.00 | per year | | Otio Pro Monthly | $90.00 | per month | | Otio Go Yearly | $219.00 | per year | | Otio Go Monthly | $36.00 | per month | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/otio-ai-research-assistant/id6763363776/reviews.md ### 5/5 — Otio Has Become My Primary Research Workspace as a Working Researcher *2026-05-21* As a researcher managing dozens of PDFs, academic papers, technical reports, video lectures, interview transcripts, and notes across multiple projects, I’ve tried many AI tools. Most deliver generic, ungrounded answers. Otio AI Research Assistant stands out as the one that truly solves real research pain points. After months of daily use, it earns a full 5 stars.  Here are what I liked most: • Chat Across Your Entire Library with Verified Citations
Upload batches of papers, documents, and videos. Ask synthesis questions like “What are the main methodological contradictions in these 12 studies?” or “Extract findings on Y from sources after 2023.” You get clear answers tied to exact pages or timestamps—no hallucinations, just honest gaps flagged when sources lack support. Essential for publishing and defending work.  • Dedicated Spaces for Each Project
Every literature review, grant proposal, systematic review, or analysis gets its own isolated workspace. Sources, chats, and context stay separate. No more re-uploading or lost threads like in ChatGPT or NotebookLM. This persistent organization is a game-changer.  • Accurate, Layered Summarization
A 60-page paper or 90-minute transcript yields a tight executive summary plus expandable details on limitations, quotes, or data. Follow-ups stay grounded. I now process 30–50 papers for literature reviews in a fraction of the old time, spotting themes and contradictions fast.  • Practical AI Writing
Generate outlines, method sections, briefs, and drafts directly from your sources. Switch between models for precision or creative synthesis. Output stays faithful, slashing fact-checking time.  • Seamless Workflow
Easy imports from Google Drive, Dropbox, Mendeley, Zotero, and more. Mobile highlight-to-ask and quick capture let me add sources on the go. The clean iOS interface supports deep focus without distractions.  Large batches take a few minutes to process, and heavy use benefits from paid plans. It complements—not replaces—specialized stats software or reference managers. Still, it wins on persistence, multi-source synthesis, and citation reliability.  If you collect, synthesize, and write from messy information streams, Otio delivers real value. It has cut my weekend work and boosted output quality and speed. Trusted by over 200,000 researchers and professionals, it’s built for serious intellectual labor.  Strongest recommendation. Download Otio, create a Space, and feed it your current project. You’ll feel the difference immediately. Perfect for: AI research assistant for academics, chat with PDFs, AI literature review tool, research paper summarizer with citations, and persistent AI workspace for researchers. This is the one that sticks. Five stars. ## Frequently asked questions about Otio ### What is Otio? Otio is an AI research assistant designed to help users organize scattered research materials like PDFs, links, and notes into a connected library. It allows users to ask AI questions across their documents, generate summaries and drafts, and keep projects organized. ### What file types can I upload to Otio? Otio supports a wide range of file types including PDFs, Word documents, EPUBs, links, notes, images, audio, and videos. It also integrates with cloud storage services like Google Drive, Dropbox, Box, and OneDrive, as well as reference managers like Mendeley and Zotero. ### Does Otio have ads? No, Otio does not have advertisements. The application is free to use with optional subscription plans for enhanced features. ### How does Otio's subscription model work? Otio offers a free tier with core AI features and web research. Paid subscriptions (Lite, Go, Pro) unlock higher upload limits, cloud connectors, multi-step research workflows, more Spaces, and Read Aloud functionality. Subscriptions auto-renew unless canceled at least 24 hours before the current period ends. ### What AI models does Otio use? Otio allows users to choose from a selection of top AI models, including GPT, Claude, Gemini, Grok, and DeepSeek, to power its research and summarization capabilities. ### Can I use Otio offline? The provided information does not specify offline functionality. However, features like web research and cloud integrations suggest an active internet connection is generally required for full functionality. ### How often is Otio updated? The latest version of Otio is 1.0.10, which was last updated on June 23, 2026. This indicates a relatively frequent update schedule, suggesting ongoing development and improvements. ### What is the age rating for Otio? Otio has an age rating of 4+, making it suitable for a wide range of users. It is available on iPhone and iPad devices. ## Version history (last 5 releases) ### 1.0.14 — 2026-07-15 Bug fixes and improvements. ### 1.0.12 — 2026-07-13 Bug fixes and improvements. ### 1.0.11 — 2026-07-07 Bug fixes and improvements. ### 1.0.10 — 2026-06-23 Bug fixes and improvements. ### 1.0.9 — 2026-06-19 Bug fixes and improvements. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-21.*