These online study tools for college students can help you prepare for exams and improve your grades.

Need help acing the big exam and improving your GPA? Online study websites like Quizlet offer homework help, textbooks solutions, study guides, and more to make learning (and cramming) easy. Of course, Quizlet isn't your only option - here's a list of 29 study sites, updated for 2017 and complete with feature lists, apps, reviews, and associated costs.

1. Quizlet

Learn from more than 148 million user-submitted study sets and classes covering a wide variety of topics (or create your own shareable study set).
  • Flashcards
  • Learning quizzes
  • Tests
  • Interactive games


How much does Quizlet cost?
  • Free for most features
  • Quizlet Plus offers ad-free learning and more study set creation options for $19.99/year

Quizlet Reviews
  • PC Mag: 4 out of 5. "Though limited in scope, the excellent Quizlet provides a simple, user-centric online tool for rote learning."
  • G2Crowd: 4.4 out of 5. "Straightforward and basic, you can't get more into the bare bones of creating and conducting a quiz than this program."
  • Edshelf: "Quizlet makes it easy to create and share study materials, to study with a few friends or an entire class."

2. Slader

Community-driven study site grants access to millions of textbook solutions. Also offers Q&A and peer tutoring. Users can find pre-existing textbook solutions or set a "bounty" and pay in "gold" that's either earned or purchased.
  • Textbook solutions
  • Q&A
  • Tutoring


How much does Slader cost?
  • Slader is free for access to pre-existing textbook solutions
  • Gold starts at $2 per 1,000 pieces (the minimum purchase)
  • Ad-free version for $1.99/month

Slader Reviews
  • AllMyFaves: "If you're having trouble with your homework, or if you just need a little more explanation than your teacher offered in class, Slader is the virtual tutor that'll make your life much easier."
  • iTunes Store: 3.5 out of 5. Users say the app is very helpful but express annoyance with ads that cause their music to pause and pop up ads displayed every few questions.
  • Google Play: 4.5 out of 5. Overall excellent user reviews; negative reviews cite frustration with ads.

3. Chegg Study

Membership provides access to homework help with over 22,000 ISBNs and online experts.
  • Step-by-step guided textbook solutions
  • 24/7 Q&A study help
  • Definitions of key topics and concepts
  • Includes 30 minutes free online tutoring


How much does Chegg cost?
  • $14.95 per month
  • Extra fees for over 30 minutes of online tutoring

Chegg Reviews
  • ConsumerAffairs: 1.2 out of 5. Based on 41 reviews, 36 users gave 1 star ratings, citing missing or inaccurate information.
  • Cool College Helpers: "The expert Q & A is a good feature we at Cool College Helpers appreciated, but we found not all the experts were right all the time."

4. Koofers

Get course materials and study aids, as well as access professors' homework, test and project frequency information.
  • Test banks
  • Flashcards
  • Practice exams
  • Study Guides
  • Notes
  • Professor ratings


How much does Koofers cost?
  • Free

Koofers Reviews
  • Techcrunch: "Koofers is driving the reinvention of our university system."
  • Entrepreneur: "By logging into Koofers--which has a Facebook app and is accessible online via Facebook ID and password - a student in an introductory chemistry class of 30 can now swap and share materials with tens of thousands of students studying the same curriculum worldwide."

5. SparkNotes

Use alongside literary works to aid comprehension and help prepare for tests. Offers prep for advanced placement coursework and college and graduate school admission tests.
  • Study guides
  • Quizzes
  • Flashcards
  • Line-by-line translations
  • Page-by-page translations
  • Blog


How much does SparkNotes cost?
  • Varies; many online resources are free; print editions start under $5.00

SparkNotes Reviews
  • Common Sense Media: 4 out of 5. "Detailed study guides a solid supplement to required books."
  • Blue Stacks 2: App: "Useful app for reading English Literature study guides on the go."
  • Good Housekeeping Institute: 2 out of 5. "A bit limited. Quizzes received great scores in our testing for their ability to reinforce material and pinpoint areas in need of review, however."

6. Shmoop

Provides online courses and study guides for a variety of subjects. Format appears to be geared toward teenagers.
  • Study guides
  • Math shack
  • Essay lab
  • Flashcards
  • Discussion board
  • Test prep guides
  • Practice drills and tests
  • Videos


How much does Shmoop cost?
  • $24.68/month
  • $150.00/year

Shmoop Reviews
  • CNET: "Shmoop is a fine study guide for students, but it also has the potential of being an assistant for those that don't want to study."
  • Common Sense Education: 4 out of 5. "Pop culture plus solid content equals legit learning."
  • Education World: 4 out of 5. "Its overly complicated navigation bar aside, Shmoop does an exceptional job in presenting a variety of academically relevant content for teen users."

7. StudyBlue

Platform to create and store your own digital flashcards and other study materials, with access to other user-submitted flashcards and resources.
  • Flashcards
  • Study guides
  • Notes
  • Quizzes
  • Homework help Q&A


How much does StudyBlue cost?
  • Basic - free. Limited to your own flashcards and course materials
  • Pro - $19/month. Ad-free version grants access to unlimited user-created flashcards and more than 350 million study materials
  • Pro Annual - $7/month billed as $84 annually. Offers everything the Pro version has plus unlimited access to study guides
  • Pro Semesterly - Starts at $10/month billed as $60 per semester

StudyBlue Reviews
  • Common Sense Media: 3 out 5. "Super study concept has some privacy issues."
  • Education World: 5 out of 5. "StudyBlue is 100% free to use, but unlike other free online tools, the digital flashcards provided here look and work like those for which others happily pay."
  • EdTechTimes: "Overall the StudyBlue system is a great tool with a poor web presence. That's neither here nor there though, as one can use all the robust features without ever visiting the website at all."

8. Course Hero

Share and access course-specific resources with more than 10 million members. Unlock course materials by uploading your own documents.
  • Notes
  • Study guides
  • Flashcards
  • Homework help 24/7
  • Literary study guides
  • Practice tests


How much does Course Hero cost?
  • Basic - free access to flashcards, can purchase individual answers from online tutors starting at $3 per question
  • Premier - $119.40 billed yearly (9.95/month), $59.95 billed quarterly (19.95/month), or $39.95/month. Comes with 30 monthly unlocks, additional flashcard features, and up to $120 in tutoring

Course Hero Reviews
  • Reviewopedia: 1.5 out of 5. "Overall, online reviews displayed negative feedback on the services provided by Course Hero. If you are paying for an education it is probably best just to do the work yourself or join a study group."
  • Geek And Nerd: 7.5 out of 10. "The quality of the resources available is very high. In this review, it is worth mentioning that you can readily find resources for a specific course at a particular college or university."

9. WolframAlpha

A self-described computational knowledge engine that uses its own knowledge base and computational ability to give specific answers on practically any topic.
  • Step-by-step solutions
  • Problem generator
  • Test prep
  • Hints
  • Worksheets


How much does WolframAlpha cost?
  • Personal, non-commercial use: free
  • WolframAlpha Pro for students: $4.75 per month when paid yearly, $6.00 per month paid monthly. Offers step-by-step solutions and advanced problem generator capabilities.
  • WolframAlpha Pro Premium for students: $7.99 per month paid yearly, $10.00 per month paid monthly. Offers all Pro features plus advanced computational time and support.

WolframAlpha Reviews
  • PC Mag: 3.5 out of 5. "WolframAlpha can be useful for comparing similar items, but it can be hit or miss."
  • Common Sense Media: 4 out of 5. "Storehouse of data answers questions - if specific."
  • EdShelf: "Wolfram Alpha has rapidly become the world's definitive source for instant expert knowledge and computation."

10. GoConqr

Create, share, and access digital learning content with a stress on community membership.
  • Mind maps
  • Flashcards
  • Quizzes
  • Notes
  • Slides
  • Flowcharts
  • Courses

  • []iOS[/url]
  • Android

How much does GoCongr cost?
  • Basic: Free, ad-supported. Allows up to three subjects and a total of 20 resources
  • Basic Plus: Free. Adds unlimited subjects and public resources
  • Premium: $21.95/year. Ad-free version offers private resources in addition to Basic Plus features

GoCongr Reviews
  • G2 Crowd: 3.8 out of 5. "GoConqr is a free online learning platform where you can create, share, and discover Mind Maps, Flashcards, Study Planner, and other resources."
  • Lifehacker: "Helps you study on the go."

View short online videos to help prepare for a test or learn new materials geared toward students from middle school through adult professional education. Can also earn college credit with online video courses.
  • Video lessons
  • Flashcards
  • Study guides
  • Practice problems
  • Practice quizzes and tests


How much does cost?
  • Basic plan: $29.99/month - unlimited access to all video lessons and transcripts
  • Premium plan: $59.99/month - additionally provides practice quizzes and tests
  • College Accelerator plan: $199.99/month - earn college credit Reviews
  • eCampus News: "For students who are properly motivated, could prove to be an invaluable resource."
  • Education Dive: "Its courses seem to be thoughtfully designed."

12. CliffsNotes

Provides study guides for literature, coursework guides, and test prep for high school, college, graduate school and professional exams.
  • Supplemental notes
  • Study guides
  • Test prep online exams
  • Essay writing how-to's
  • Definitions
  • Practice quizzes
  • Test-taking strategies


How much does CliffsNotes cost?
  • Varies: many online resources are free, print resources are available for $5.99 and up, subscription plans for test prep start at $29.99

CliffsNotes Reviews
  • New York Times: "CliffsNotes is one of the most thorough, one of the most insightful. If a student wanted to use it along with the text, it would be worthwhile."
  • Make Use Of: "Great tools with understanding and analyzing the text."

13. HippoCampus

Offers open education resources, classroom core content instruction, and study help for college students. Over 5,700 videos available in 13 subject areas.
  • Multimedia approach
  • Exam prep
  • Warm-up activities
  • Sample quizzes
  • Sample problems
  • Videos

  • Not available

How much does HippoCampus cost?
  • Free for individual users

HippoCampus Reviews
  • Common Sense Media: 3 out of 5. "HippoCampus provides credible information on a wide range of topics, although some of the lessons are more enjoyable than others."
  • Good Housekeeping Institute: 3.5 out of 5. " was the highest-rated website for assisting students with multiple subject areas because it offers video, audio, and written tutorials, plenty of examples, and interactive options."

14. StudyStack
Create flashcards, study user-submitted flashcards, organize flashcards in "stacks," and participate in learning activities generated from the flashcards.
  • Flashcards
  • Games
  • Activities
  • Quizzes/ tests


How much does StudyStack cost?
  • Free for ad-supported version
  • Pro membership $1.50/month or $10/year for ad-free version

StudyStack Reviews
  • Blinklist: "This free solution is definitely one you should investigate for developing your own web-based study aid."
  • Google Play: 4.1 out of 5. "A fun way to get better grades."

15. Study Guide Zone

Access learning resources for college courses and discover links to prep for exams.
  • Links to study guides
  • Practice questions
  • Study tips

  • Not available

How much does Study Guide Zone cost?
  • Free

Study Guide Zone Reviews

16. Enotes
Offers a variety of study tools plus homework help and math textbook solutions, plus a community of students and teachers ready to answer questions.
  • Over 30,000 literature and study guides
  • Quizzes
  • eTexts
  • Textbook solutions (math)
  • Research paper topics
  • Essay lab
  • Homework help (more than 300,000 already-answered questions, or submit your own)


How much does Enotes cost?
  • 14-day free trial
  • Basic plan: All study guides and existing homework help answers, four PDF downloads/month, and ad-free content for $49.99/year ($4.17/month)
  • Plus plan: All study guides and existing homework help answers, unlimited PDF downloads, 20% discount on homework help and essay lab, and ad-free content for $99.99/year ($8.33/month)
  • Homework help guaranteed answers: From $10 (48 hours) to $40 (3 hours)

Enotes Reviews
  • Retail Reviews: 4 out of 5. "In-house editing makes sure articles are accurate… Not a lot of materials for STEM students."
  • Knoji: "Has by far the largest selection of literature texts, literature guides and literature study tools [compared to Chegg and Course Hero]."

17. Cram

Boasting nearly three million members, Cram offers more than 165 million flashcards covering a vast range of subjects.
  • Create your own flashcards or use the existing flashcard sets
  • Flashcards
  • "Cram Mode" memorization, which utilizes the Leitner System to focus study on trouble areas
  • Tests
  • Games (flashcards are "gamified" into games like Jewels of Wisdom and Stellar Speller)
  • Curated flashcard sets for easy studying


How much does Cram cost?
  • Cram is free for ad-supported accounts
  • Cram Premium starts at $5/semester

Cram Reviews
  • appPicker: "Highly intuitive and easy to use."
  • EdShelf: "Very easy to use."
  • New York Times: "Offers numerous prebuilt flashcards uploaded to the app and the website… Menus and interface are slightly clunky, but it is free."

18. Flashcard Machine

A flashcard-based learning system with advanced features and more than 115 million user-submitted flashcards.
  • Flashcard library (and create your own)
  • Add multimedia like videos and audio to flashcards
  • Share flashcards with others and collaborate
  • Multiple choice, speed, and pop quiz games
  • Standard review-and-flip study mode or "4D" time-based learning


How much does Flashcard Machine cost?
  • Flashcard Machine is free with ads
  • Contributor accounts start at $10/year and offer an ad-free experience

Flashcard Machine Reviews
  • Blinklist: "Make easy study aids in 20 minutes."
  • The Idaho Librarian: 4 out of 5. "Flashcard Machine is not flashy, but it's flexible and completely free."

19. Cramberry
Cramberry offers a simple premise: "studying doesn't have to be painful." The site provides online flashcards in a variety of subjects, including Science, History, Languages, Accounting, and Medicine.
  • Flashcards
  • Make your own flashcards or study millions of user-submitted flashcards
  • Tracks your progress and serves the flash cards you're struggling with more often


How much does Cramberry cost?
  • Free for up to 30 flashcards per day
  • $9/year for unlimited flashcards, CSV import, and auto-translate (Cramberry Pro)

Cramberry Reviews
  • Hack College: "Cramberry is one of many online flash card creators out there, but it packs some killer features that make studying away from the computer a breeze."
  • TeachersFirst: "Flash cards made easy."
  • ReadWrite: "Cramberry has the potential to be incredibly useful by taking a familiar technique and making it much easier to use."

20. Kahoot

Create your own "Kahoots," quizzes designed to help you learn. Best played in a group environment, but can be used for individual learning.
  • Quizzes
  • "Jumble" quiz game
  • Create your own quizzes and games, duplicate and edit others', and play them
  • Surveys and discussions for group learning


How much does Kahoot cost?
  • Kahoot is free

Kahoot Reviews
  • EdShelf: 4 out of 5 for "learning curve" and "pedagogical effectiveness," 5 out of 5 for "student engagement." "… a refreshingly new take on introducing a subject and formative assessment…"
  • Center for Teaching Quality: "Kahoot is a free service that allows users to create and deliver online quizzes, surveys and discussions in a competitive game-based environment… it is a lot of fun to play."
  • App Ed Review: 7.5 out of 10. "Kahoot is a tool designed for users to create digital, game-like assessments."
  • Ed Tech Review: "Learners of all age can benefit from Kahoot. Today, many students possess smart devices, and by using Kahoot on their own devices, students can actually make group learning fun."

21. Khan Academy

This nonprofit organization championed by Bill Gates offers a free learning system covering a wide variety of subjects: Math, Science and Engineering, Computing, Arts and Humanities, Economics and Finance, and test prep.
  • Videos
  • Missions
  • Practice exercises


How much does Khan Academy cost?
  • Khan Academy is free

Khan Academy Reviews
  • PCMag: 4 out of 5. "Generally helpful tutorials paired with large database of machine-graded assessments. Video markup can be onerous. Assessment is impressive in scale, but ill-suited to some subjects."
  • Consumer Affairs: 4 out of 5. Reviewers cited a large course selection and ease-of-learning as pros, though some reviewers noted a lack of repetition and a tendency to become bored as potential cons.
  • Site Jabber: 4 out of 5. Most reviews were positive and stated Khan Academy makes learning easy. The few negative reviews complained that the lessons lose their fun factor after a while.
  • Success at School: "One thing that Khan Academy does really well is explain complicated theories in simple terms."

22. Pink Monkey

A "G-rated" study source that claims to be the world's largest library of free online literature summaries covering more than 460 books.
  • Book notes
  • Chapter summaries
  • Study guides

  • No current apps, but site is being redesigned to be responsive for a better mobile interface

How much does Pink Monkey cost?
  • Pink Monkey study guides, chapter summaries, and online book notes are free
  • Downloadable and printable book notes (Monkey Notes) cost between $3.49 and $7.99 each

Pink Monkey Reviews
  • Make Use Of: "Along with detailed summaries, other helpful features... include things like key literary elements, overall analyses, and study questions."
  • Busy Teacher: "You will never need another set of Cliff's Notes again."

23. Study Briefs (Textbook Rush)

Offers comprehensive Study Briefs (ebooks) covering specific sub-topics in subjects like Science, Technology, Math, Reference, History, Business, and Language.
  • Subject summaries
  • Facts and definitions
  • Equations and answers
  • Course material highlights and shortcuts

  • Study Briefs not apparent in the Textbook Rush app

How much does Study Briefs cost?
  • $1.99 to $495 per Study Brief

Study Briefs Reviews
  • No reviews found for Study Briefs

24. Free Book Notes

A literature study guide search engine that allows users to search learning resources for more than 44,000 books from sources like SparkNotes, Pink Monkey, Cliff's Notes, Shmoop, and more from one place.
  • Book notes
  • Study guides
  • Book summaries
  • Chapter summaries
  • Book analyses

  • None found

How much does Free Book Notes cost?
  • Free Book Notes is free

Free Book Notes Reviews
  • No relevant reviews found

25. Brainly

A points-based Q&A system: ask questions and spend points when they're answered; earn points for answering questions. Move up the ranks with gamification features and earn more points for being active in the community.
  • Search past questions
  • Ask and answer questions
  • Community participation
  • Gamification


How much does Brainly cost?
  • Brainly is free

Brainly Reviews
  • Highya: "Brainly's simple concept and extremely large user base means that the site is easy to use, and you'll very likely receive answers to any of your homework problems in 10 minutes or less."
  • EdTech Roundup: "A wonderful resource that provides lots of fun incentives for getting students involved with helping each other."

26. OneClass

Claims 90% of its 1.2 million students have improved by at least one letter grade. Sends course-specific notes to users after each class and before exams.
  • Exam study guides
  • Textbook notes
  • Lecture notes
  • Reference guides
  • Video tutorials

  • None found

How much does OneClass cost?
  • Free, if you upload your course notes for credits that can be exchanged for other course notes
  • OneClass Unlimited offers three payment options: $95.76/year, $59.94/semester, or $39.98/month

OneClass Reviews
  • TechCrunch: "Like an Evernote specifically aimed at education."
  • VentureBeat: "Let's call it the Jerry Maguire strategy: Help me help you."

27. Memorize

An online memorization tool that lets you create study pages in multiple choice, matching, or flashcard modes. You can also collaborate with others. The site is not continually updated, but it has good study resources.
  • Use wizards to create pages
  • Memorize with different modes
  • Share pages
  • Upload diagrams, images, links, etc.
  • Share with others

  • Not currently

How much does memorize cost?
  • Free

Memorize Reviews
  • G2Crowd: 4 out of 5. " pages have interactive learning modes. They make facts clear and lucid. Create a page in seconds! Share or assign it."

28. instaGrok

instaGrok lets you esearch study topics and create an interactive concept map that can be customized and shared. It's like a cross between a mind map and a study guide; a visual tool that helps you link key concepts and learn more efficiently.
  • Key facts that link to source material for additional information
  • Map and link study facts with the interactive visual interface
  • Integrated journals for note-taking and writing reports
  • Share with others


How much does instaGrok cost?
  • Free to students and individuals

instaGrok Reviews
  • Common Sense Media: 3 out of 5. "the site does a good job of eliminating inappropriate links or sources from a search. Another bonus is the fact that you can run all your chosen sources through EasyBib, a site that verifies research sources."

29. Study Guides and Strategies

Although a bit dated, this site has tons of valuable information on how to learn and study. Rather than helping you study for specific courses and quizzes, the site teaches you how to study and introduces various study methods so you can learn more efficiently with improved retention. That said, there are some subject-specific tutorials available.
  • Learning and studying guides
  • Project and time management guides
  • Writing and vocabulary guides
  • Reading and research guides
  • Math and science guides

How much does Study Guides and Strategies cost?
  • Free

Study Guides and Strategies Reviews
  • No reviews found for

30. Educator

Provides online lessons in math, science and software training. Also, you can find here SAT test preparation and art science lectures.

Lectures are applicable for middle school to college level students.
  • Video lessons
  • Supplementary practice exercises and practice problems with step-by-step solutions
  • Downloadable lesson files and slides
  • Forum for communications with students and instructors


How much does cost?
  • Free version gives access to 1/3 of lessons library
  • Monthly subscriptions cost $45 for the first month, and then $35 per month if you want to proceed
  • Half annual subscriptions cost $180 lump sum for 6 months ($30/month)
  • Annual subscriptions cost $300 ($25/month) Reviews
  • The End in Mind: “The videos are well put together, informative and easy to understand, even for a non-math person like me.”
  • Ed Tech Reviews: “Overall, is a great learning tool for any student or adult professional who is serious about learning and wants to get the most bang for their buck.”

Use these online study tools to save your grades, and don't forget to use to save money on your textbooks!


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