We monitor your usage of Kanshudo in order to provide you with a personalized study program. We infer your knowledge of kanji, words and grammar based on your interactions with different parts of Kanshudo, including flashcards, games and lessons etc, and we use that to provide tailored study recommendations. We do not provide any of the information we collect to any third party, or link it with any information about you other than your email address.

We use cookies (and javascript) to manage your interactions with the system in games and lessons, in order to provide continuity between questions and exercises. Without these cookies, Kanshudo would not function for you.

We allow tags and cookies from a handful of third parties for the following purposes.

• Google - we use Google Analytics to help us understand usage patterns on Kanshudo
• Facebook - we use Facebook tags to enable the 'share' and 'like' buttons
• New Relic - we use New Relic for performance monitoring
• Honeybadger - we use Honeybadger to report bugs and errors
• Stripe - we use Stripe to process credit card payments
• Paypal - we use Paypal for payments

Credit card payments are processed by Stripe, the most secure internet payment solution available for credit card payments. Kanshudo does not handle or store your credit card information directly.

Kanshudo does not allow advertising; we are entirely funded by subscriptions. Please become a Kanshudo Pro!

We will not spam you! We do not email you for any reason except to answer your inquiries, provide you with account information, or (if you have subscribed) send you study emails. We require a valid email account in order to confirm that you are a real person with a serious intent to study Japanese, and we will disable your account if we determine that your email address is unused or temporary.

You may request account deletion at any time by contacting support. We will respond as soon as we can (our target is within 1-2 business days) and remove your account and data from the system. Please note this is irreversible! We will retain a record of your email address for security reasons, and you will not be able to re-register with the same email. Note: if you wish to restart your studies, account deletion is not required - we can simply remove your study data. Please contact support if you need this.