Pay-Per-Result

Only pay for things you learn!

Your personal account is free. Quizzes are free.
Words that you already know (or words that you never learn) are free!

You only pay us if:

1 - A word was hard for you and went on your personal practice cycle.
2 - You learned it successfully using our technology.

Watch our video that explains how it works.

Try it free! You can take 4 or more quizzes before you need to make a deposit.

Pay-Per-Result makes learning affordable

... and your deposit supports our literacy campaigns! 

Starter packages:
10 credits (50 cents each)...  $5
25 credits (40 cents each)... $10 
or 100 credits (30 cents each)... $30

Most popular:
200 credits (25 cents each)... $50
500 credits (20 cents each)... $100

The average member learns 200 words per year with our program (this is not how many words they study, but the number of words they actually learn; words they struggled with initially!)

We also offer several easy ways to earn free credits. They take a bit of time, so get started with them now. By the time you need a refill, you'll get free tutoring while knowing that you also helped sustain our literacy campaigns.

Group pricing:
2,000 credits (15 cents each)... $300 
5,000 credits (just 10 cents each!)... $500

Share credits with others and save! Credits never expire...
Want to pay via check? Click here to download our order form.

Site license pricing? Click here!

Annual memberships:
Our fixed-price alternative for power users who don't want to use Pay-Per-Result.
A memberships can't be shared and is non-refundable.

$299    5-year membership
$99.80 Annual NON-renewing membership
$79.80 Annual self-renewing membership
$  9.50  Monthly self-renewing membership  

The last options renews automatically at the end of the term. 
PayPal account required. Don't have one? Start one free during checkout!