16 apps every high school student needs to download immediately:

Any.Do

If you're the kind of person who loves making to-do lists, then you'll love this app. If you're not the kind of person who loves making to-do lists, become that person. To-do lists are incredibly helpful for productivity and getting things done, especially if you're super busy. Any.Do is simple and straightforward. You can make lists for today, tomorrow, and other days. When you're done with a task, click on it, and it will disappear.

30/30

Are you the kind of person who has trouble doing things quickly? If so, then you need this app. 30/30 is a task manager aimed to help with your productivity. It times you to make sure you're getting everything done. It's really easy to use, and it's really wonderful to look at.

RefME

One of the worst things about homework and writing papers is sourcing, especially in today's day and age. RefME helps you figure out how to source, collect and organize your sources, and then exports your bibliography into a Word document.

The Homework App

You could write all of your homework down in a notebook or planner, or you could put it in this app. I suggest the app. It will be by your side all the time, meaning you can't lose it. It's really easy to use and allows you to color code to keep everything organized. There's a calendar and even a space to keep info on your teachers, like contact information. You can write in what your homework is, when it's due, and other notes that you need. This is a definite must-have to be the most organized student ever.

Grammar Up

As spell check pops up on basically everything, knowing how to spell is sadly becoming less important. Unfortunately, grammar is still very important and is much more tricky than spelling - auto-corrections are not always right. Enter this app. Grammar Up is basically a huge multiple-choice quiz that will help you understand grammar so much better. Becoming familiar with proper grammar is incredibly important. Get yourself this app 

The Chemical Touch

Taking chemistry this year? Sorry :( In all seriousness, you need this. It provides a full periodic table of elements with additional information. It's great for any science class, not just chemistry. If you need more info, it connects you to a Wikipedia page for any element. Having this in your phone rather than on a paper you could easily lose is incredibly helpful.

Graphing Calculator

Graphing calculators are super expensive. This app is not. Forget carrying around a bulky calculator you could easily break - download it onto your phone. It's not free, but it's worth it, and is probably actually necessary to pass math class.

Studious

Android users, you might want to download Studious: it's a planner, timetable, and map all in one. You can put your whole class schedule in there so that you have it at your finger tips in one spot. You can also share your schedule with friends and have them see yours as well. The planner allows you to stay organized and keep on top of your assignments. And if you're a college student lurking around this post, Studious offers maps of lots of universities that will ensure you never get lost.

Google Sheets

Google Drive is my favorite thing in the entire world because it allows you to access documents no matter where you are. Google Drive is an app you should have, but Sheets is a definite must-have. Sheets allows you to edit your Google documents, while Drive only lets you view them. The best thing about Sheets is that you can share these documents with other people and you can all be in there at once.

Duolingo

You probably need to take a foreign language, so download Duolingo to help you out. It helps you learn languages for free using quizzes and questions. It helps you spell and pronounce words as well. Even if you're not in school, this is just such a great way to learn!

Math Formulas

If math is not your best subject, then you definitely need all the help you can get. It helps teach you formulas and equations, storing your favorites for future reference. Use this to get through homework, studying, and maybe even class.

Shakespeare In Bits

Every high school student learns Shakespeare at one point or another. I love Shakespeare, but I have no problem admitting it can be really difficult to read and get through. This app introduces you to the stories in "bits," letting you learn things in a much more fun and easy way.

Sleep Cycle

Sleep is just as important as schoolwork... in fact, it's the key to getting through high school. If you have trouble sleeping, you need the Sleep Cycle app. You download this, place it near you on your bed, and then it analyzes your sleep cycles. It wakes you up in your lightest sleep phase in a 30-minute alarm window that you choose. This helps you get up much easier, without hitting snooze. So, say you want to get up between 6 and 6:30... put that in, and the app will ring the alarm at the exact moment of your lightest sleep. Genius!

Spruce

This app doesn't have to do with schoolwork, but it does have to with your health, which is more important. It's no secret that high school students have acne. Spruce is designed to help you figure out what's going on and how to treat it without making time out of your busy schedule for the doctor. You snap a picture of yourself, get linked to a dermatologist, and then get a consultation through the phone.

StudyBlue

Flashcards make studying a lot easier. They can also be annoying to create and they're really easy to lose. That's why StudyBlue is so great. It's an app that lets you create your own flashcards and quizzes, or choose from the millions already in the library. It's one of the best ways to study no matter where you are!

Venmo

If you're the kind of person who is always lending or borrowing money to friends/family members, you need Venmo. It's the best. It connects to your bank account, allowing you to pay people through the phone instead of in cash.