In testing on TestFlight

Sibyl Folio

A reading and research app that works the way a good editor would.

Tell Sibyl what you want to understand: a subject, a question, a hunch. She asks what she needs to know, as many questions as it takes, and then goes and finds real articles from real sources. What comes back is an issue: a small, curated magazine on your topic that you read in a calm, distraction-free reading pane.

What you can do

Your key, your data

Sibyl Folio has no accounts and no servers of ours. You add your own Anthropic API key, and the app talks to Anthropic directly; you pay Anthropic for what you use, and a running ledger shows what each issue cost. Your library and settings live on your device.

Requirements

iPhone and iPad
iOS 17.0 or iPadOS 17.0, or later
Mac
macOS 14.0 or later
Also needed
An Anthropic API key from console.anthropic.com
Price
Free
Privacy
Privacy policy