App enhancement I have a App code where i want some new features like another app

This is our android app [login to view URL] i wanna integrate some feature from another app. [login to view URL] Create Bookmarks: By using this feature you can easily save your current page (with your suitable title) if you want to view this current page in future. So don’t worry if you forget that important current page, just bookmark current page with a suitable title then it will save in bookmarks folder and then your find that page easily. Very helpful feature for students during exams revision. Crop pages and sections: By using this feature you can easily cut a required content area or portion from a page by simply moving 9 boxes grid area to your specific content then re-size the grid to fit with your content and then save this cut image to see this important content/information in future if required. Create Notes: By using this magic feature your can easily mark or highlight important points or information or content by simply selecting your favorite color of marker from app option and then mark or highlight to prepare your own notes. You can easily do this on your hard copy notes but this app also provide you the same function to make your important notes. So again don’t worry if you don’t have a real marker or highlighter, use this app and do the same this my your figure touch/dragging. Maintain Study History: Some times many people face a problem called “Battery End” while study on mobile. What is “Battery End” problem? Explain you from a short example. For example you are studying a book page on mobile but suddenly your mobile’s battery ends then your plugin the charger and turn on your mobile but many time you forget the last visited page. This is a problem and we solve this problem to include this feature in this app. By using this app your last visited page will automatically save before your battery ends and don’t worry if your battery ends while study. After you next turn on this app, you easily find the last visited page.