Polar is an advanced document management and knowledge repository for students, knowledge professionals, and self-learners.
It includes tools to manage documents annotations, and simplify learning from digital sources. It includes flashcards and incremental reading powered by spaced repetition.
Your starting point in Polar is the document repository.
This holds all your reading in one place (epub, pdf, webpages), supports tags, folders, filtering for flagged or archived documents, etc.
You can also sort by any column to build reading queues and mix and match the above to build customize your repository.
When reading your documents with Polar you can create highlights, comment on highlights, (text & area highlights), annotate them, and manage them using the annotation viewer. The annotation viewer captures your highlights and annotations from all files.
Like the document repository, the annotation viewer allows you to filter the view, sort by columns, etc.
Polar supports both desktop and web and supports cloud sync and storage and sync of your across devices.
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Mobile includes both tablet and phones running iOS and Android. Polar supports mobile webapps (progressive webapps), with native apps in the works). They can be installed by visiting the website (and logging in) on your phone.
We have desktop apps for Windows, MacOS, and Linux which you can download here.
Polar is a cloud-based app. Every new user gets 1 GB of free storage. Your documents are available across all your devices. Up to 500 GB of storage is available when upgrading.