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Reading is the key to self-improvement. We get inspired, motivated and access knowledge that helps us evolve more efficiently.

But there is a little problem: once you read a book, the information fades away over time.

Underline is here to help you progress faster. It's scientifically proven that writing down ideas and inspirational quotes can boost your creativity, stop your brain from overthinking, and contribute to your self-improvement. This app is just helping you remember more from what you read. You can save your favorite paragraphs with a simple scan. Underline lets you enjoy a vast variety of book summaries filled with motivational quotes, interesting ideas, and clear and accessible goal lists.

Read more, remember more, and improve every day. With Underline you have no excuse not to.

Main benefits you get with Underline:
Book scanner: save ideas and quotes from books for free (with the help of the OCR technology) to reread and remember them;
Book tracker: keep notes safe and organise their books into your own digital library.
Daily motivation: read the inspirational quotes and notes from books shared by others;
Self-improvement: keep track of your reading list, set goals and reminders;
Productivity app: you can sync with Kindle to import your saved notes;
Quotes creator: create images with remarkable quotes or use one of our templates;
Social media app for book lovers: share your favorite quotes, annotated books or thoughts with others;
… and many more.

Do I need a book app?
The answer is simple: yes, because we forget almost 90% of what we read!
Underline is the book summaries app to keep and share the knowledge from your favorite readings.
Start with the scanner, choose your favorite paragraphs, and share them with a little help from our quote creator.

Even if you want to check out some ideas, create a reading list, or become an active person in our community. You will find this book app to be a perfect motivation tool for your self-improvement.

Download now and try it!

P.S. Underline is a pretty young app, so we need all the help we can get! Share a thought or some quirky idea and we’d be more than happy to hear you out. You can reach us at hello@getunderline.com or on social media.

What’s New

Version 1.16

We've improved text extraction speed & made the text selection easier:
- Faster process. Text extraction now takes a maximum of 5 seconds.
- More accurate. Text detection is now significantly more accurate, across multiple languages.
- Auto-rotate picture. The app now detects the curve of the text lines and rotates the picture to make it easier to use the text selection (crop)
- Fixed bugs. No more memory leaks, making the entire text extraction process more fluent and natural.

Ratings and Reviews

4.0 out of 5
20 Ratings

20 Ratings

Snsd_Rainie ,

Great app to have if you want to store book electrically

Dear developer,

I am a very lazy person. So I want things work efficiently. I find out this app work efficiently among the bunch of scan apps on AppStore.
Great way to copy books. On iPad Pro, the screen size is not actually fit. Once the photo is taken from the book, there is a way to export texts through other apps. What I want hope is that I could export those texts into GoodNotes. It will save much time. I hope so. I hope you guys can corporate with GoodNotes or something like that to make this feature that I suggested.

Soundaryab12 ,

Great app but lacking export functionality

I love the features of the app - I’m surprised an app like this exists, with all the features I was looking for. But, it doesn’t let me export data (or maybe it does and I don’t know?) out of it so I can store it on a note taking web app to view on my computer. There is only one email address to give feedback and that seems to be a wrong one. Idk how else to give feedback.

Developer Response ,

Thank you for your review! We are sorry about the feedback email address but thank you for pointing it out. We will fix it right away, but in the meantime, you can send us a note at hello@getunderline.com. As for the export data request, it may be something we'll consider in the future. Aside from this, if you think Underline is a great app perhaps can you reconsider your review? Thank you again!

Ctll033 ,

No tech support

Had a question about how to edit text that was inaccurately scanned into a note (no, too many errors to correct using just an iPhone keyboard). Never got response.

Also, instructions are lacking on how to scan pages from a book without creating a zillion individual notes (or how to consolidate those notes into one manuscript).

NOT happy. Deleting app.

Developer Response ,

Hello! We are sorry that you had some issues with the Underline app. We are still working on improving the app, as we are pretty young, as a team and also as a product, so we might have some parts where we still need to work on. For the email part, there was an issue that we weren't aware of, so please send us a note to hello@getunderline.com. Your feedback is extremely valuable, even if you are no longer using Underline. Thank you again for your time and maybe, someday, you will be back in the Underline Community!


Book Vitals Inc.
127.9 MB

Requires iOS 12.3 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Infrequent/Mild Mature/Suggestive Themes
Infrequent/Mild Profanity or Crude Humor


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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