Description
Summio is an AI reading companion available on the web and iOS that creates structured summaries from four source types: eligible catalogue books, public YouTube videos with usable transcript context, compatible public articles, and compatible text-based PDFs. Users can choose a summary depth of short, medium, or detailed, so the output matches how much context they need.
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Beyond summaries, Summio includes a Dialogue feature that lets users chat with a summary and its available source context, with citations shown when available, and a Companion training mode that generates recall questions and memory practice from summaries users have already finished. Saved summaries are kept in a signed-in library that syncs across supported devices, and the interface supports 27 languages.
Summio is positioned as a companion to reading rather than a replacement for the original work, helping people decide what deserves a closer read. It offers a free tier plus paid Premium and Max plans with higher usage limits. Web purchases are processed through Stripe and iOS purchases through Apple, and summaries are generated using third-party AI providers.
- CategoryAI Summarizers
- Pricing ModelFreemium
- DeploymentCloud
- PlatformsWeb, iOS
Summio's Core Features
AI summaries of eligible catalogue books
Summaries of public YouTube videos with transcript context
Summaries of compatible public articles
Summaries of text-based PDFs (up to 50 MB / 1,000 pages)
Adjustable summary depth (short, medium, detailed)
Dialogue chat grounded in summary and source context
Companion training with recall questions and memory practice
Signed-in library synced across devices in 27 languages
How to use Summio?
Pick a source: Choose a catalogue book, paste a YouTube or article link, or upload a text-based PDF.
Choose the depth: Select short, medium, or detailed depending on how much context you need.
Read the summary: Review the structured summary of the material.
Ask questions: Use Dialogue to chat with the summary and available source context.
Save and review: Keep summaries in your library and use Companion training to reinforce recall.
Summio's Use Cases
- Deciding what to read
- Video digests
- PDF review
- Study and recall
- Research triage





