MXTNote is a free PDF reader and note taking app. In spirit, its similar to the more commonly-known note taking method like Zettelkasten method
We keep the following sections
You can do markup on the PDF but we keep the page structure unchanged, so a quote is always valid. The simple notes serve as anchor point, links can be created between them, and they can be used to link positions in PDF or notebook. Some common use cases are
You can choose to work completely in offline mode, or, in online mode, your PDF and notes are synced and accessible in all your devices(In online mode, if you lost internet it will buffer your changes and sync later)
MXTNote is available as web app and android/IOS app. To use web app or mobile app in online mode, either sign up with free MXTNote account, or Sign in with google/apple.