Slader FAQS

Your questions, answered.

Subscription FAQs

I thought everything on Slader was free!

All high school textbook solutions on Slader are free for all students. So is Slader Q&A.

As of 2020, unlimited textbook solutions in upper level, college textbooks are only available to users who subscribe to Slader College. (You can still get 5 free solutions per book every month without a subscription)

We understand how stressful school can be, and we know that you’ve got bills to pay too. We are committed to ensuring Slader is more affordable than the alternatives. And we will work hard every day to make sure your investment in our product is worth it. We appreciate your support.

What does the Slader College subscription get me?

The Slader College subscription will give you unlimited access to a large library of upper-level College content and solutions, an ad-lite experience for distraction-free studying, and solution one-sheeters to save you time!

How do I cancel my premium subscription?

Your Slader Premium subscription is managed separately from your Slader account. Deactivating your account will not deactivate your monthly payments.

Please see below for cancellation instructions.

iOS App: If you subscribed via our iOS app, you can cancel on your iOS device by going to Settings >> Click your name at the top >> Click Subscriptions >> Select Slader >> Click Cancel Subscription.

Android App: If you subscribed via our Android app, you can cancel on your Android device by opening the Google Play Store >> Click Menu >> Click Subscriptions >> Select Slader >> Click Cancel Subscription >> Follow instructions.

Credit Card: If you subscribed with a credit card you can email your cancellation request to So we can best assist you, please include your username, email address or invoice number from your most recent receipt in your email.

PayPal: If you subscribed through the website with PayPal, you need to login to your PayPal account and go to the Recurring Subscriptions section to cancel your payment there.

How do I deactivate my Slader account?

In order to deactivate your account, sign in and go to your account profile. Follow these steps: Profile >> Settings >> ‘Deactivate my account’ (last option beneath ‘The Basics’ header).

I’m already paying for High School+ (formerly known as premium).
Why can't I access this book?

The High School+ subscription provides you with an ad-lite experience and access to all high school books, whereas the Slader College subscription provides you with unlimited access to all of our upper-level College solutions.

I bought a premium subscription on the Slader iOS app. How do I get rid of ads?

We’re sorry that you’re experiencing issues! First, make sure you are logged in on the app.

Try following these steps:

  • First, we ask that you click Cancel on your subscription (in you phone, Settings > Click your name > Subscriptions > Slader > "Cancel Subscription").
  • Next, process a Refund for your purchase. Because you bought your subscription with iOS, to get a refund you must follow the instructions found here (We are sorry, but Apple doesn't allow us to process refunds ourselves.)
  • Then please try to purchase again either via the app or through our website.

If you are still experiencing issues, please email


How does Q&A work?

Slader Q&A is community powered, supported by millions of students and contributors from all across the globe, with experts here everyday answering lots of questions, so don’t hesitate to ask yours!

Have a question? Ask it now!

How can I ask a question?

To post a question on Slader using your desktop computer, go to this link, type your question and follow the guidelines.

To post a question using your phone on Slader, visit this link, point the phone's camera at the question and follow through with the guidelines.

Do I need to sign up to ask a question?

Nope! You can ask your questions anonymously.

How do I make sure I get an answer?

Unfortunately, we cannot guarantee you will get an answer. But you can improve your chances by signing up (we prioritize registered users) and asking a homework question that is concise and clear and asks for only one answer.

What kind of questions can I ask?

Slader is an academic website serving students in all grades from high school through college and beyond. If you’re taking a class, then there’s a good chance your homework question or study problem is a good problem for Slader.

But we do have a couple rules.

Please make sure that you ask only 1 question at a time. If you have multiple questions, come back and ask again.

If you are attaching a photo, please make sure that it’s clear. Try to crop out any extraneous information.

We reserve the right to delete questions that are unclear, ask for multiple answers, or which might be interpreted as spam.

Do you have to pay to ask a question?

Nope. Asking on Slader is free and easy. No signup required.

Will I get a notification if my question is answered?

Yes! If you add your email after asking then you will get a notification when you get an answer. We promise to never send you spam.

If I ask a question when will I get an answer?

Q&A at Slader is community-powered, so we cannot guarantee your question will be answered. But we can guarantee that we’ll try! Our experts prioritize high quality questions asked by registered users. To boost your chances, sign up and ask a question that is clear and concise.

And remember, you can also answer questions on Slader. So feel free to share your question online or with your friends.

How can I find my question?

If you're registered, then find your questions in your profile by...If you're not registered, then remember to copy/paste the URL after you ask. And you can always visit the Q&A Homepage and search to find your question...

How do I add math or other scientific symbols to my question?

Add photos! Or use KaTeX! What is KaTeX? KaTeX is a fast and easy to use JavaScript library that allows you to render mathematical symbols on the web.

Check this out for some examples:

Can I answer questions?

Yes. To find questions to answer go to the Q&A Homepage and search and filter to find questions you can answer.

Textbook Solutions FAQS

Why is this textbook empty?

Whoops. It appears you landed on a book that is still under construction. We’ve got millions of textbook solutions on Slader, but some books are not yet complete. To be extra sure that we don’t have your book, please try searching again as some books have various versions and you may have landed on the wrong one.

Still can’t find your solutions? If you’ve got a specific homework question, then try Q&A.

Why is there no solution for my problem?

Our experts are hard at work authoring and verifying solutions for textbooks on Slader. You are welcome to submit your own solution for review. The next student like you will appreciate it.

What should I do if I find an incorrect solution?

If you have found a mistake, then there are a few things you can do:

  1. Rate the solution. This will send a signal to our moderators, and help other students who come across the solution.
  2. Leave a comment on the incorrect solution. The author of the solution will be notified and they may correct their work (or explain why they think it is correct).
  3. Add your own solution. Just log in, go to the exercise page, and click the big red "upload your solution" button. You can write your answer there, and an expert will review your answer.
What is an ISBN?

A book's ISBN number is a unique identifier that can be used to differentiate it from other books. While different books can have the same titles, authors or publishers, each book has only a single unique ISBN. ISBN numbers are located on the back covers of books, next to their barcodes.