Here is a list of useful apps for students and teenagers. It is just a starting point, and I would appreciate if you could add any apps for students in the comments, and we will add them to our list.

APP
DESCRIPTION
ACT Test
The ACT (American College Testing) is a standardized test for high school achievement and college admissions in the United States produced by ACT, Inc.
Atlas by Collins
Atlas by Collins offers students a wealth of information through a series of beautiful maps.
Biology
Change your attitude towards biology with the help of Biology HSEB app.
Cru High School Playbook
If you minister to middle and high school students there is now “an App for that.”
Dropbox
Dropbox keeps documents in a single easy to access location. It is one of the most useful apps for storing the plethora of essays and documents that you accumulate throughout your high school years.
EdX – Online Courses Free courses in computer science, engineering, history, psychology, nutrition, big data, statistics and hundreds more.
Evernote This is user-friendly, allowing students to take notes, take photos and record videos to help them remember all sorts of things. One of the most useful apps for students
Flipboard An integral part to success in social studies is staying up to date with current events.
Google Translate Google Translate is one of the must-have apps for students, especially if you are studying a foreign language.
GroupMe GroupMe provides a simple and easy way to create group chats with all of your friends, whether they have the app or not.
iBooks Students generally use this for shorter readings for their classes.
Instapaper This is the kind of app that saves web pages for you to view later, even though you do not have access to the internet at the time.
iStudiez Pro This app belongs in the top ten, as it efficiently tracks assignments and due dates for all your classes.
Keynote If you ever need to make a presentation, Keynote has you covered. The app provides the templates, so all you need to do is add the information.
Learn Physics
Learn Physics is an app that helps to understand physics easily and fast with core concept tutorials, formulas calculator and quizzes.
Mathway Mathway can combine the performance of apps like Calculus Solved, College Algebra Solved and Algebra 2 Solved, all-in-one.
Mathway – Math Problem Solver With millions of users and billions of problems solved, Mathway is the world’s #1 math problem solver.
MindSnacks If you take a foreign language at school, the MindSnacksseries has you covered.
My Study Life My Study Life is a cross-platform planner for students, teachers and lecturers designed to make your study life easier to manage.
myHomework This free app enables you to monitor your class schedules and manages your assignments for all your lessons.
Netflix
Netflix allows you to stream all of your favorite TV shows and movies right to your iPad, free of ads.  Just in case you got nothing better to do in class….
Penn Foster Study Planner Download the Penn Foster Study Plan App to assist you with planning your exam schedule and keep you on track with your learning progress.
Penultimate If you prefer to take notes by hand, Penultimate is your fit as it’s the closest you’ll get to the feel of a pen and a notebook on the iPad.
Photomath – Camera Calculator Simply point your camera toward a math problem and Photomath will magically show the result with detailed step-by-step instructions.
RefMe RefME is a referencing app, enabling students to create bibliographies, citations, and references instantly by copying and pasting URLs.
Remind Remind, formerly Remind101, is a free text messaging app that helps teachers, students, and parents communicate quickly and efficiently.
Scanner Pro
This studying app allows you to scan documents quickly. You can then add them to cloud storage providers such as Google Drive and Dropbox, or to your camera roll. It is also able to find existing documents that you have previously photographed and convert them into PDFs.
Smithsonian Channel Being one of the most highly acclaimed history institutions, Smithsonian is sure to have amazing content in their app on every area of history.
Songza If you’re in need of tunes, Songza has you covered. With countless expertly made playlists that feature virtually every artist in your library.
TED TED talks have the power to suck you in for hours, and there are even speakers that are in high school.
US-History US-History helps unpack the complexity of America’s years from colonization up until the new millenium.
Wheeling High School App Wheeling High School App is the app for up-to-date Wheeling High School information created by the students for the students. (and staff and parents too).
Wolfram Alpha Wolfram Alpha allows users to find the answers to problems for various other subjects including physics and music.
YouTube I don’t need to tell you about Youtube. An endless source of advice and support. And some entertainment also…

If you know any other useful apps for students, please let us know in the comments and we will add them to the list….