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Privacy Policy

This privacy policy explains how ("", "We", or "Us") collects and uses personal information that you ("you" or "your") provide on the website and on the App (collectively ""). This privacy policy was last updated on October 1st, 2018.

Guiding Principles Our privacy policy is guided by the following principles:

We’re committed to creating a safe and secure online environment for you. We do not sell your personal information to third parties. We collect very little personally identifiable information about you, and what we do collect we store securely. We believe that ultimately, you own your data, and that, whenever possible, you get to decide whether to take it with you. Therefore, unless you tell us otherwise, we will keep your learning history so that we can continue to personalize your experience over time. How we collect data collects the following information about you and your use of

Personal Information When you register for, you provide to us personal information (such as your full name, email address, degrees) that could be used to identify you. For the purposes of this Privacy Policy, we call this “Personal Information”. Your Nickname is used to identify you on to other users on If you do not want to be identified, do not use any part of your real name as your nickname.

The table below outlines what information about you is visible to others on

Information about Your Use of We collect usage information about certain features of, such as the questions you’ve answered, the words mastered, and the amount of time you’ve spent on

Information Necessary to Fulfill Orders If you purchase a product or service from us, we request certain Personal Information from you on our order form. You must provide contact information (such as name and email) and financial information (such as billing address, credit card number, expiration date). This information is used solely for billing purposes by our PCI-certified payment provider, Stripe.Your credit card information is encrypted and transmitted to Stripe securely via HTTPS. You can learn more about Stripe's security practices here.

Your credit card details are never stored on systems, and no one at can access them. A few privileged members of the team have access to the last 4 digits of your credit card and its expiration date in order to validate your identity in the case that you need to contact us regarding your payment details.

What we will NOT do with your Personal Information will NOT sell Personal Information provided by you (except in connection of a merger or acquisition). will NOT use Personal Information provided by you:

To engage in targeted advertising To build a profile about students other than for enhancing their experience on How we use Data uses collected Personal Information in the following ways:

To Enhance Your Experience on uses the information you provide or that we collect to enhance our relationship with you and to operate, maintain, enhance, and provide all of the features and services found on, for instance, stores your responses to the questions you’ve answered and the words you’ve had trouble with so we can provide you with the right question at the right time to improve your quantquestions. We may use your Personal Information to provide you with information about’s features, services and other offerings that may be of interest to you. Under certain circumstances and if we obtain your consent (for example, if you submit a testimonial and agree to make it public), we may post your Personal Information on

To Understand How You and Others Use uses all of the information that you provide or that we collect from other users to understand and analyze the usage trends, learning behaviors, and preferences of our users, to improve the way work and look, and to create new features and functionality. For more information, please see the “Technologies” section, below.

When We Share Data will disclose User Information only as described below:

We will share data when required by law. We may access, preserve and disclose account information and User Content if required to do so by law or in a good faith belief that such access preservation or disclosure is reasonably necessary to: (i) comply with legal process; (ii) enforce our Terms of Use ; (iii) respond to claims that any User Content violates the rights of third parties; (iv) provide support relating to; or (v) protect the rights, property or personal safety of the company, its users and the public.

We may share data in the context of a change in business, including a merger or acquisition. We transfer information about you if we are acquired by or merged with another company. In this event, we will notify you of any such change in ownership or control of your information.

Advertising on We use third-party advertising companies to serve ads when you visit These companies may use information (not including your name, email address or any information provided directly to about your visits to this and other websites or apps in order to provide advertisements about goods and services of interest to you. If you would like more information about this practice and to know your choices about not having this information used by these companies, click here.

Data Security Data security is important to us.

We try to ensure that and the information sent to us are safe, but no security measures are perfect. uses certain physical, managerial, and technical safeguards designed to preserve the integrity and security of your Personal Information and other information we maintain in connection with We cannot, however, ensure or warrant the security of any or all of the information you transmit to us, and you do so at your own risk. Once we receive your transmission of information, we makes commercially reasonable efforts to ensure the security of our systems. We encrypt the transmission of all data using secure socket layer technology (SSL) or similar technologies. However, please note that this is not a guarantee that such information may not be accessed, disclosed, altered, or destroyed by breach of any of our physical, technical, or managerial safeguards.

We will notify you electronically or via the website if experiences a data security incident that could affect you. If we learn of a data security incident that compromises or appears to compromise your Personal Information, then we will attempt to notify you electronically so that you can take appropriate protective steps. We may also post a notice on if a data security incident occurs.

Data Retention Unless we receive a deletion request from you, we will retain your information for as long as your account is active or as is reasonably useful for operational or educational purposes.

Technical Information To provide a personalized learning and high-quality experience, we may use various technologies that automatically record certain technical information from your browser or device, including standard log files, web beacons, or pixel tags. This technical information may include your Internet Protocol (IP) address, device or browser type, Internet service provider (ISP), referring or exit pages, clickstream data, operating system, and the dates and times that you visit We do this to better understand how you are using so we can improve functionality and the services we offer you. Like most websites, whether or not you are a registered member, we may send one or more cookies – small text files containing a string of alphanumeric characters – to your computer. Cookies remember information about your activities on a website and enable us to provide you with a more personalized learning experience. may use both session cookies and persistent cookies. A session cookie disappears automatically after you close your browser. A persistent cookie remains after you close your browser and may be used by your browser on subsequent visits to You can, however, remove a persistent cookie at any time. Please review your web browser “Help” file to learn the proper way to modify your cookie settings. However, without cookies you will not have access to certain services and features on uses a variety of third-party service providers, such as Google Analytics to understand usage. We may allow third-party service providers to place and read their own cookies, web beacons, and similar technologies to collect information through This information is collected directly and automatically by these third parties, and does not participate in these data transmissions. will, wherever feasible, contractually obligate our third-party service providers to abide by the terms of this Privacy Notice. also uses Local Storage Objects (LSOs) such as HTML5 to store content information and preferences. Third parties with whom we partner to provide certain features on may use LSOs such as HTML5 to collect and store information. Various browsers may offer their own management tools for removing HTML5 LSOs. Please consult your browser’s “Help” function to learn more.

Communication from Customer Service Based upon Personal Information you provide us, we will send you a welcoming email to verify your email address and password. We will also communicate with you in response to your inquiries, to provide the services you request, and to manage your account. We will communicate with you by email only.

Service-related Announcements We will send you strictly service-related announcements on rare occasions when it is necessary to do so. For instance, if is temporarily suspended for maintenance, we might send you an email.

Generally, you may not opt-out of these communications, which are not promotional in nature.

Weekly Update Emails If you have registered for, we may send you a periodic email that includes a personalized vocabulary question, and information about new content on If you have registered for and identified yourself as an educator, we may send you a personalized email that describes your students’ use of You may opt out of these emails. (Please see "Choice and Opt-out")

Other Emails You may opt in to receive other emails, such as comment notifications or emails when new material comes out on the blog. You may opt out of these emails. (Please see "Choice and Opt-out")

Special Offers and Updates We will occasionally send you information on products, services, special deals, and promotions. You may opt out of these emails. (Please see "Choice and Opt-out")

Choice and Opt Out We provide you the opportunity to ‘opt-out’ of having your Personal Information used for certain purposes, when we ask for this information. For example, if you no longer wish to receive certain communications from us, you may opt-out of receiving them by either changing the email preferences section of the My Account section, or through clicking on the provided link on any communication that we send.

Changes to this Privacy Statement If we decide to change our privacy practices, we will modify this Privacy Policy so that you are aware of what information we collect, how we use it, and under what circumstances, if any, we disclose it. We reserve the right to modify this Privacy Policy at any time, so please review it frequently. Contact Us If you have any questions or suggestions regarding this Privacy Policy or our privacy practices in general, please contact us through this form.