Which Offers Better Annotation Tools, Kindle App Or Apple Books?

Wait, can you even get library audiobooks on Apple Books? I know Libby works with Kindle for ebooks, but for audio I always use the Libby app directly. Maybe the whole integration question is moot if you’re a library power user who lives in Libby’s own app for audio.

It depends entirely on what you're studying and where your books come from. If all your material is purchased from Amazon and you live inside their ecosystem, Kindle's integration is smoother. The annotations are tied to your account and appear in the Kindle app's notebook section, which is clean. But if you're pulling EPUBs from Project Gutenberg, academic repositories, or library apps like Libby, Kobo handles those natively with full annotation support. Kindle requires you to convert those files via Send-to-Kindle, which can sometimes strip formatting or not play nice with complex footnotes. For a truly flexible research setup where you don't control the source, Kobo offers more freedom right out of the box.

My anecdote: was reading a thriller on Apple Books on my iPad, got to a cliffhanger, had to leave, opened my iPhone on the train... and it was three chapters back. I had to skim to find my spot. Never had that heart-dropping moment with the Kindle app. That single experience made me switch back for anything I'm seriously invested in.

I’ve perfected the art of annotating books digitally. Highlighting is straightforward—just press and hold on a word, then drag to select the text. A menu pops up letting you highlight, add a note, or even share the passage. My favorite trick is using different highlight colors to categorize themes: yellow for key plot points, blue for beautiful prose, and pink for emotional moments. Notes are equally simple; tap ‘Add Note’ after highlighting and type your thoughts. The annotations sync across devices, so I can review them later on my phone or laptop. For deeper analysis, I rely on the ‘My Clippings’ feature, which compiles all highlights and notes into a single file. Exporting this to apps like Evernote or Notion helps me organize my thoughts for book clubs or reviews. Pro tip: if you’re studying, use the ‘Popular Highlights’ feature to see what others found noteworthy—it’s like a communal reading experience. The Kindle’s search function also lets you revisit specific annotations quickly, making it a powerhouse for serious readers.

I'm the kind of person who hoards PDFs the way some people hoard vinyl—notes in the margins, scribbles on diagrams, little arrows pointing to the important bits. For everyday reading and heavy annotation on any device, I usually reach for Xodo first. It's free, fast, and works on Android, iOS, Windows, and the web; it lets me highlight, underline, add sticky notes, draw freehand, and even sync with Google Drive or OneDrive so my highlights follow me between phone and laptop. When I need something desktop-native, Adobe Acrobat Reader (the free version) covers the basics reliably—highlights, comments, stamps—and Microsoft Edge's built-in PDF reader has surprisingly solid markup tools for quick edits on Windows. On macOS, Preview is my go-to for quick annotations and exporting flattened PDFs without fuss. If I'm on Linux, Okular gives me solid annotation features and a comfortable workflow. For power users on Windows, PDF-XChange Editor has a generous free feature set (just watch for features that add watermarks when you use advanced tools). For occasional online edits I keep PDFescape and Sejda bookmarked; they let me add comments and fill forms without installing anything. Foxit Reader is another cross-platform favorite—lightweight and fast with good free annotation options. For classroom or collaborative note-taking, tools like Hypothesis or Kami (limited free tier) are handy. My practical tip: pick one app for daily marking and pair it with cloud sync so your notes never get stranded—I've lost fewer marginalia that way, and it makes reviewing a whole lot less painful.

What about when you have a massive, 1000-page scanned PDF? Performance matters. I've found GoodNotes and PDF Expert handle huge files the best without becoming sluggish. Apps like Notability can sometimes choke. LiquidText, while brilliant, can also slow down with enormous documents as it builds its link database. Always test with a file representative of your typical workload. The smoothest writing experience won't help if the app freezes every time you turn a page in your textbook.

I use Kindle apps daily, and yes, they absolutely allow highlighting and annotating text. It's one of my favorite features because it makes studying or revisiting favorite passages so much easier. When I read 'The Name of the Wind', I highlighted countless quotes that resonated with me, and adding notes helped me remember why they stood out. The process is simple—just long-press on the text to highlight or tap the note icon to jot down thoughts. These annotations sync across devices, so whether I’m on my phone, tablet, or Kindle, my notes are always there. The ability to export highlights to apps like Evernote is a game-changer for organizing my reading insights.