What exactly is Nibbler?
Nibbler turns the books, articles, and documents you mean to read into a five-minute daily habit. It breaks long content into bite-sized lessons and uses spaced repetition so the ideas actually stick.
How much time does it really take?
About five minutes a day. That's the whole point — short, consistent sessions beat long, rare ones for remembering what you learn.
How is this different from just reading?
Reading once means forgetting most of it within a week. Nibbler adds active recall and spaced review, bringing each idea back at the right moment so it moves into long-term memory. Read more on our science page.
What can I upload?
Books, PDFs, articles, and links. Your library becomes your personalised curriculum — you decide what you want to learn.
Can I really chat with my books?
Yes. Ask any book in your library a question and Nibbler answers using only what you uploaded — grounded in your content, never invented.
Is there a free trial?
Yes — you can try Premium free for 7 days. Cancel anytime before it ends and you won't be charged.
What does it cost after the trial?
Nothing — you automatically move to our free tier. We want everyone to enjoy Nibbler, so the free version stays free forever. Premium is there if you ever want more, but you're never pushed off a cliff when the trial ends.
Do you sell my data?
No. We don't sell your personal data. See our privacy policy for the full details.
Is there really a cat?
There is really a cat. Several, in fact. One of them is our mascot and takes the job very seriously.