Summio

What Summio is

Summio turns eligible books, public YouTube videos, compatible public articles, and text-based PDFs into structured summaries. Readers can choose short, medium, or detailed summaries, then chat using the summary and available source context; citations appear when available. Its Companion prepares recall questions and memory practice from summary ideas, and can also use questions asked in chat. Summio is available on iOS and the web, and describes availability in 27 languages. PDFs must be text-based and no larger than 50 MB or 1,000 pages; image-only scans need OCR before upload. Public YouTube videos require usable transcript context, while articles and PDFs need accessible text. The free plan offers public summaries at no cost, and the first AI summary includes one translation and 10 chat questions. Premium and Max provide higher usage for the same supported reading workflow, but prices, billing periods, and trial terms are shown at checkout. Summio says personal information is not sold and personal content is not used to train Summio-owned models. After account deletion, personal data is removed within 30 days unless the law requires retention.

Who it suits

Summio suits readers who want to grasp a source’s main ideas and decide whether to read it more closely. It may also suit people who want recall questions and memory practice based on summaries.

Limits

The free plan provides public summaries at no cost; a first AI summary includes one translation and 10 chat questions. PDFs are limited to text-based files up to 50 MB and 1,000 pages, and image-only scans need OCR. Usable transcript context is required for public YouTube videos.

Getting started

1. Open https://summio.org/ or use Summio on iOS.
2. Choose an eligible catalogue book, public YouTube video, compatible public article, or text-based PDF.
3. For a PDF, make sure it is no larger than 50 MB or 1,000 pages; OCR image-only scans first.
4. Choose short, medium, or detailed summary depth.
5. Use chat with the summary and available source context, or try Companion recall questions.
6. Use the free plan or review Premium and Max terms at checkout.

Verdict

Summio brings summaries, source-based chat, and recall practice into one reading workflow. Check that a source has accessible text or transcript context before relying on it, and note that paid-plan pricing is shown at checkout.