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Otio alternatives · AI Research

Otio alternatives with an Android app

The Otio listing does not include an Android app. 11 of the 69 other AI research tools in this directory list an Android app.

Otio has a free plan. Paid plans start at $7 per month (Lite), billed monthly or $84 per year. 7 of them are free or have a free plan.

11 tools · Listings checked up to Nov 13, 2026 · Where the facts come from

How each one differs from Otio

  1. ChatPDF

    Ask questions about PDFs and get answers with citations

    • ChatPDF starts at $89.99 per year or $14.99 per month (US App Store in-app purchase). Otio starts at $7 per month (Lite), billed monthly or $84 per year.
    • Only ChatPDF lists an Android app.
    • Only Otio lists a Linux app.
    • Only Otio lists a browser extension.
    ChatPDF vs OtioChatPDF pricing and details

  2. Eightify

    AI summaries and key insights for YouTube videos

    • Otio has a free plan. Eightify does not, though it has a free trial.
    • Only Eightify lists an Android app.
    • Only Otio lists a web app.
    • Only Otio lists macOS, Windows and Linux apps.
    Eightify vs OtioEightify pricing and details

  3. Mapify

    Turn PDFs, videos, web pages and audio into AI mind maps

    • Mapify starts at $5.99 per month, billed yearly ($9.99 billed monthly). Otio starts at $7 per month (Lite), billed monthly or $84 per year.
    • Otio has a free plan. Mapify does not, though it has a free trial.
    • Only Mapify lists an Android app.
    • Only Otio lists Windows and Linux apps.
    Mapify vs OtioMapify pricing and details

  4. Consensus

    AI search engine that answers questions from peer-reviewed papers

    • Only Consensus lists an Android app.
    • Only Otio lists macOS, Windows, Linux and iOS apps.
    • Only Otio lists a browser extension.
    • Otio also covers chat assistant and notes.
    Consensus pricing and details

  5. R Discovery

    Paper discovery app with an AI assistant, PDF chat and audio

    • R Discovery starts at $69 per year, or $12 billed monthly (US prices). Otio starts at $7 per month (Lite), billed monthly or $84 per year.
    • Only R Discovery lists an Android app.
    • Only Otio lists macOS, Windows and Linux apps.
    • Otio also covers notes and AI agents.
    R Discovery pricing and details

  6. Liner

    AI search with cited answers, research agents and a writer

    • Liner starts at $14.99 per month, billed annually ($17.99 billed monthly). Otio starts at $7 per month (Lite), billed monthly or $84 per year.
    • Only Liner lists an Android app.
    • Only Otio lists a Linux app.
    • Liner also covers long-form writing and highlights.
    Liner pricing and details

  7. AskYourPDF

    Chat with PDFs and other documents and get cited answers

    • AskYourPDF starts at $11.99 per month, billed yearly ($14.99 billed monthly). Otio starts at $7 per month (Lite), billed monthly or $84 per year.
    • Only AskYourPDF lists an Android app.
    • Only Otio lists macOS, Windows and Linux apps.
    • Otio also covers AI search, notes and AI agents.
    AskYourPDF pricing and details

  8. ReadCube Papers

    Reference library with an AI assistant for cited answers

    • ReadCube Papers starts at $95 per user / year, billed annually ($10 billed monthly). Otio starts at $7 per month (Lite), billed monthly or $84 per year.
    • Otio has a free plan. ReadCube Papers does not, though it has a free trial.
    • Only ReadCube Papers lists an Android app.
    • Only Otio lists macOS, Windows and Linux apps.
    ReadCube Papers pricing and details

  9. Zotero

    Free, open-source reference manager from a nonprofit

    • Zotero starts at $20 per year for 2 GB of file storage. Otio starts at $7 per month (Lite), billed monthly or $84 per year.
    • Only Zotero lists an Android app.
    • Only Otio lists a web app.
    • Only Otio lists a browser extension.
    Zotero pricing and details

  10. Paperpile

    Reference manager built around Google Drive, Docs and Word

    • Paperpile starts at $8.30 per month, billed annually. Otio starts at $7 per month (Lite), billed monthly or $84 per year.
    • Otio has a free plan. Paperpile does not, though it has a free trial.
    • Only Paperpile lists an Android app.
    • Only Otio lists macOS, Windows and Linux apps.
    Paperpile pricing and details

  11. Resoomer

    Free text summarizer and rewriting toolkit for documents

    • Resoomer is free. Otio starts at $7 per month (Lite), billed monthly or $84 per year.
    • Only Resoomer lists an Android app.
    • Only Otio lists macOS, Windows and Linux apps.
    • Resoomer also covers documents, grammar & style and text to speech.
    Resoomer pricing and details

Common questions

Which Otio alternatives have an Android app?

ChatPDF, Eightify, Mapify, Consensus, R Discovery, Liner, AskYourPDF, ReadCube Papers and 3 more list an Android app.

Does Otio have an Android app?

The Otio listing does not include an Android app. It lists Web, macOS, Windows, Linux, iOS and Browser extension.

Which of these AI research tools are free?

ChatPDF, Consensus, R Discovery, Liner, AskYourPDF, Zotero and Resoomer are free or have a free plan.

When was this checked?

Each listing shows its own date. On this page they run from Oct 5, 2026 to Nov 13, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Otio: the alternatives its listing names first, then the tools that share the most features with it.