# Summio > Summio is an AI reading companion for the Web and iOS. It turns eligible catalogue books, public YouTube videos with usable transcript context, compatible public articles, and compatible text-based PDFs into structured summaries with chat grounded in the summary and available source context. Available in 27 interface languages. ## What Summio is Summio is an **AI reading companion for the Web and iOS**. It generates editorial summaries of: - **Books** — structured summaries and available source context for supported catalogue titles searched by title or author - **YouTube videos** — supported public lectures, podcasts, and talks with available transcript context - **Long articles** — compatible public newsletters, magazine pieces, and web essays - **PDFs** — compatible text-based research papers, reports, and manuals up to 50 MB and 1,000 pages; image-only scans need OCR before upload Eligible summaries can include chapter structure, quotes, key ideas, a glossary, takeaways, and source citations when available. You can choose one of three depth levels — short, medium, or detailed. ## Key features - **Dialogue** — chat with available source context for a summary. Citations point to relevant passages when available. - **Companion training** — recall and review activities generated from eligible saved summaries. - **Library** — eligible saved summaries associated with a signed-in account for search and revisit. The Web app is online; offline iOS availability depends on content already saved on that device. - **27 interface languages** — English, Russian, Spanish, French, German, Portuguese, Italian, Japanese, Korean, Simplified Chinese, Traditional Chinese, Arabic, Turkish, Polish, Ukrainian, Dutch, Swedish, Danish, Norwegian, Finnish, Czech, Hungarian, Indonesian, Malay, Filipino, Kazakh, Uzbek. - **15 selectable tones** — casual, formal, academic, friendly, professional, humorous, motivational, storytelling, technical, conversational, instructional, persuasive, analytical, descriptive, and concise. - **Source citations** — citations point to relevant source sections or passages when available. ## Platform - Web portal: https://app.summio.org - iOS app: App Store distribution for supported Apple devices. - Web authentication supports email and password or Sign in with Apple. - Eligible Web purchases are processed through Stripe; purchases made in the iOS app are processed by Apple. ## Plans and billing - **Free tier** — a defined summary allowance; current source eligibility and limits are shown in the product. - **Premium** — paid plan with higher eligible limits and features. - **Max** — paid plan with higher eligible limits, detailed depth, and additional features. Current price, allowance, trial, and renewal terms are shown at checkout. Subscriptions auto-renew until cancelled. Manage or cancel through the provider used for purchase: App Store subscription settings for Apple purchases, or the Web billing portal for eligible Stripe purchases. ## Common comparisons - **vs Blinkist** — Summio supports eligible catalogue books, public YouTube videos with usable transcript context, compatible public articles, and compatible text-based PDFs. Verify Blinkist's current catalogue, formats, platforms, and terms on its site. - **vs Headway / Shortform / Mentorist** — Summio supports eligible catalogue books, public YouTube videos with usable transcript context, compatible public articles, and compatible text-based PDFs. Verify each provider's current catalogue, formats, platforms, and terms on its site. - **vs general AI assistants on a PDF** — Summio keeps eligible saved summaries in a signed-in library and offers chat with the summary and available source context. Verify other providers' current document, retention, and plan details on their sites. ## Privacy posture - We do not sell personal information. - See the Privacy Policy for how personal content is handled and for third-party AI provider terms. - Web accounts can use email and password or Sign in with Apple. See the Privacy Policy for the identifiers handled by each account method. - Payment details are handled by Stripe for eligible Web purchases or Apple for iOS App Store purchases; Summio receives the transaction and subscription identifiers needed to operate the account. - iOS marketing attribution may use AppsFlyer and Apple SKAdNetwork. Access to IDFA is gated by App Tracking Transparency consent. - Account deletion completes within 30 days. Full privacy policy: https://summio.org/privacy ## Links - Homepage: https://summio.org - Web app: https://app.summio.org - iOS App Store: https://apps.apple.com/app/id6746345451 - Privacy Policy: https://summio.org/privacy - Terms of Use: https://summio.org/terms - Support / FAQ: https://summio.org/support - Sitemap: https://summio.org/sitemap.xml ## Contact - Privacy: privacy@summio.org - Support: support@summio.org ## Frequently asked - **Is Summio free?** Yes — a free tier is available in the Web and iOS products. Premium and Max are paid subscriptions; current terms appear at checkout. - **Does Summio summarise YouTube?** Yes — paste an eligible public video, lecture, podcast, or talk URL. Supported videos with available transcript context can be summarised into a structured reading. - **Does Summio work with PDFs?** Yes — upload a compatible text-based PDF up to 50 MB and 1,000 pages. Image-only scans need OCR before upload; see the Privacy Policy for data handling and provider terms. - **What languages does Summio support?** 27 interface languages. For eligible sources, you can select a supported output language that differs from the source language. - **Is Summio a Blinkist alternative?** It may fit readers who want structured summaries for eligible catalogue books, public YouTube videos with usable transcript context, compatible public articles, and compatible text-based PDFs. Verify Blinkist's current product on its site before comparing. - **Does Summio work offline?** Generating summaries and using AI chat requires the internet. The Web app is online; offline access in the iOS app depends on content already saved on that device. - **How accurate are Summio's AI summaries?** Citations point to relevant source sections or passages when available. AI can still err — Summio is a reading companion, not a substitute for the original work for medical, legal, financial, or academic decisions. - **Can I cancel my subscription anytime?** Yes — use App Store subscription settings for Apple purchases or the Web billing portal for eligible Stripe purchases. Access normally continues through the paid period, subject to the provider terms shown at checkout. - **Is there an Android version?** A native Android app is not currently advertised. The Web portal is available from a compatible browser, and a native iOS app is available for supported Apple devices. - **Where is Summio based?** Built by a small team. Operates globally; data may be processed in the United States and the European Union with Standard Contractual Clauses safeguards.