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Keenious alternatives · AI Research

Keenious alternatives with an iPhone and iPad app

The Keenious listing does not include an iPhone and iPad app. 15 of the 69 other AI research tools in this directory list an iPhone and iPad app.

Keenious has a free plan. Paid plans start at $10 per month, billed annually ($20 billed monthly). 10 of them are free or have a free plan.

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

The 12 closest to Keenious

  1. Zotero

    Free, open-source reference manager from a nonprofit

    • Zotero starts at $20 per year for 2 GB of file storage. Keenious starts at $10 per month, billed annually ($20 billed monthly).
    • Only Zotero lists macOS, Windows, Linux, iOS and Android apps.
    • Only Keenious lists a web app.
    • Zotero is open source, according to its own site.
    Zotero vs KeeniousZotero pricing and details

  2. SciSpace

    AI research platform for literature review and reading papers

    • SciSpace starts at $12 per month, billed annually ($20 billed monthly). Keenious starts at $10 per month, billed annually ($20 billed monthly).
    • Only SciSpace lists an iOS app.
    • Only SciSpace lists a browser extension.
    • SciSpace also covers AI agents.
    SciSpace pricing and details

  3. 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). Keenious starts at $10 per month, billed annually ($20 billed monthly).
    • Only ChatPDF lists macOS, Windows, iOS and Android apps.
    ChatPDF pricing and details

  4. Anara

    AI research assistant that cites the exact source passage

    • Anara starts at $8 per seat / month, billed yearly ($10 billed monthly). Keenious starts at $10 per month, billed annually ($20 billed monthly).
    • Only Anara lists macOS and iOS apps.
    • Only Anara lists a browser extension.
    • Anara also covers web clipper and AI agents.
    Anara 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). Keenious starts at $10 per month, billed annually ($20 billed monthly).
    • Only R Discovery lists iOS and Android apps.
    • Only R Discovery lists a browser extension.
    R Discovery pricing and details

  6. Otio

    AI research workspace for chatting across many sources

    • Otio starts at $7 per month (Lite), billed monthly or $84 per year. Keenious starts at $10 per month, billed annually ($20 billed monthly).
    • Only Otio lists macOS, Windows, Linux and iOS apps.
    • Only Otio lists a browser extension.
    • Otio also covers notes and AI agents.
    Otio 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). Keenious starts at $10 per month, billed annually ($20 billed monthly).
    • Only AskYourPDF lists iOS and Android apps.
    • Only AskYourPDF lists a browser extension.
    • Keenious also covers AI search.
    AskYourPDF pricing and details

  8. Liner

    AI search with cited answers, research agents and a writer

    • Liner starts at $14.99 per month, billed annually ($17.99 billed monthly). Keenious starts at $10 per month, billed annually ($20 billed monthly).
    • Only Liner lists macOS, Windows, iOS and Android apps.
    • Only Liner lists a browser extension.
    • Liner also covers AI agents, long-form writing and highlights.
    Liner pricing and details

  9. alphaXiv

    arXiv reading and discovery site with an AI research assistant

    • alphaXiv starts at $8 per month (alphaXiv Go). Keenious starts at $10 per month, billed annually ($20 billed monthly).
    • Only alphaXiv lists an iOS app.
    • Only alphaXiv lists a browser extension.
    • alphaXiv also covers highlights.
    alphaXiv pricing and details

  10. ReadCube Papers

    Reference library with an AI assistant for cited answers

    • ReadCube Papers starts at $95 per user / year, billed annually ($10 billed monthly). Keenious starts at $10 per month, billed annually ($20 billed monthly).
    • Keenious has a free plan. ReadCube Papers does not, though it has a free trial.
    • Only ReadCube Papers lists iOS and Android apps.
    • Only ReadCube Papers lists a browser extension.
    ReadCube Papers pricing and details

  11. Eightify

    AI summaries and key insights for YouTube videos

    • Keenious has a free plan. Eightify does not, though it has a free trial.
    • Only Eightify lists iOS and Android apps.
    • Only Eightify lists a browser extension.
    • Only Keenious lists a web app.
    Eightify pricing and details

  12. Paperpile

    Reference manager built around Google Drive, Docs and Word

    • Paperpile starts at $8.30 per month, billed annually. Keenious starts at $10 per month, billed annually ($20 billed monthly).
    • Keenious has a free plan. Paperpile does not, though it has a free trial.
    • Only Paperpile lists iOS and Android apps.
    • Only Paperpile lists a browser extension.
    Paperpile pricing and details

3 more that list an iPhone and iPad app

All 15 in one table

Common questions

Which Keenious alternatives have an iPhone and iPad app?

Zotero, SciSpace, ChatPDF, Anara, R Discovery, Otio, AskYourPDF, Liner and 7 more list an iPhone and iPad app.

Does Keenious have an iPhone and iPad app?

The Keenious listing does not include an iPhone and iPad app. It lists Web.

Which of these AI research tools are free?

Zotero, SciSpace, ChatPDF, Anara, R Discovery, Otio, AskYourPDF, Liner and 2 more 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 Keenious: the alternatives its listing names first, then the tools that share the most features with it.