ダウンロード Polar APK無料

Polar is an advanced reading and annotation tool that allows users to build a non-linear knowledge base from reading. It can be used for PDFs, EPUBs, and web pages.

Polar's main features include:
- document organization and prioritization
- document management with flagging, tagging, archiving, metadata, and more
- reading for PDFs, EPUBs, and web pages
- annotations, area highlights, commenting, flashcards from annotations, pagemarks, and more
- flashcard review using a native spaced repetition algorithm
- syncing with Anki flashcards

Polar is available for download for free and comes with 1 GB of free storage. Polar is also available for web and desktop. Your documents are synced automatically. Web pages can be captured using the Chrome extension.