Start Taking Notes Today!

The best note-taking & PDF reader on iOS / Android for better study and research.

Flexcil free download on apple app store
Flexcil free download on google play store

Free Download on Apple App Store & Google Play Store Now!

Exclusively Selected by Apple

(Check us out at all Apple Stores)

Top 1 in Productivity & Free Apps

(in the Apple App Store)

Editor's Choice & Featured App

(by Apple Editors)

Advanced PDF Annotating and Note-taking Experience

Flexcil is a study toolkit that allows PDF annotation, notes creation, and convenient sharing with others.

“Our way of studying had not been revolutionized as much as technological advancement, until Flexcil was born.
–  Apple  –


All-in-One Studying Tool

Review and utilize PDFs to study effectively. Use PDF reader, digital note, annotation, and reference manager in one page.

Natural & Simple UX

Use simple Gestures UX to annotate PDF and organize notes efficiently without interruption.

Time is Gold

Save time to read, organize, and edit materials. Use the time saved to concentrate on your study.

Flexcil was selected by Apple as the best note-taking app

Check out our pre-installed Flexcil at every Apple Stores Worldwide.

Pen Gesture

You don’t have to go through Apple’s default complex process! With Flexcil, you can select text and images, and take notes by intuitive pen gestures.


PDF reader + Note taking

By combining PDF reader and digital note, you can view the PDF while dragging elements from it to your notes at the same time and organize them easily.


Boundless PDF Editing

Edit PDFs to your taste by merging, adding, and moving. You can also edit Notes as well!


Reaching data faster

All resources organized in Flexcil such as texts, images, and notes are linked systematically to trace your data easily and quickly. 


More Features

Apple Pencil

Supports the latest Apple Pencil and Double-tap function

Cloud Storage

Connect with various cloud storage services, including Dropbox, OneDrive, and Google Drive

Palm Rejection

Prevents unintentional palm and finger contact precisely and accurately

Cover & Paper Template

Personalize through a variety of colorful covers and note templates such as Plain, Lined, Legal, and Cornell.

Various Studying Toolkits

Use various toolkits for studying such as Shape, Capture, Ruler, and Lasso Tools

2 Page view

View two pages of a single document at once, which presents more comfortable and faster reading experience

What People are Saying

Great note-taking app!
Exactly what I am looking for

This is the app I’ve been waiting for so long. My favorite feature of this app is that it allows me to hand write notes on a separate notebook while reading and annotating a PDF document.
Flexcil does all I need. Many thanks to the developers!

John Smith

via the Apple App Store

Easy to use and helpful.

This app just easy and simple to use and it saves a lot of time where I just need to carry my iPad without heavy textbooks for my works.

Guiz Cheng

via the Apple App Store

Great app for researchers!

This is a purposely designed app for digital note taking and documents highlighting/underlying. The ultimate purpose for these activities is to assist learning, memory and information retrieval. Flexcil allows one to perform these activities with minimal effort using gestures and these gestures are easy to learn and intuitive.

iGo Jian

via the Apple App Store

Great app for reading + annotating + taking notes at the same time.

The app is great for reading + annotating + taking notes at the same time. I really like that I can freely move the notes anywhere on top of the PDF, annotate with gesture, move annotations around, share notes across different PDF files, look up words in the dictionary, keyword search in PDF, etc. I highly recommend the app!

Z Cui

via the Apple App Store

Our vision

Flexcil originally started because our team thought carrying books around was a hassle. Textbooks are big and heavy, and you have to switch them for each class. Losing a book or a notebook means losing all the data that you’ve organized on them.

The purpose and dream of Flexcil is to lighten the bags of students around the world by replacing thick and heavy paper texts with light, digital text-books. Technology has been improved extremely, but the way of studying has not caught up. With Flexcil, studying becomes enjoyable and easier.

We want to innovate the studying environment and experience by providing the best digital study tool.


Productivity Comes with Flexcil.