Simple pricing

Start free and learn English from your own reading. Upgrade to Pro whenever you want more practice.

Free
Everything you need to get started.
$0 / forever
  • 42 credits per week (most AI actions cost 1 credit)
  • Spend them however you like — quizzes, or discussing a document
  • Unlimited dictation practice
  • Level Check to find your CEFR level (5 credits, once every 7 days)
  • CEFR vocabulary & text-to-speech
Get started free
Rock Egg Pro
Most popular
2,000 AI credits a month for serious learners.
$8.99 / month

Billed $26.97 every 3 months

≈ 235,000₫ / month in Vietnam

  • 2,000 credits/month — quizzes, document chat & translations (most AI actions cost 1 credit)
  • IELTS-style questions: TFNG, multiple-choice, sentence completion
  • Everything in the Free plan
  • Cancel anytime — no lock-in
Start with Pro

Pay by international card or PayPal via Lemon Squeezy. You can upgrade anytime from Account → Your plan.

Pro is billed either $26.97 every 3 months ($8.99/month) or $11.99 every month, and renews automatically at the end of each period until you cancel; cancel any time and keep access until the end of your paid period. Either way, Pro includes 2,000 credits a month — most AI actions cost 1 credit.

We only count actions that use our AI, plus the Level Check. Word quizzes, document question-batches, document quizzes, questions you ask about a document, and Vietnamese translations each cost 1 credit. Starting a new Level Check costs 5 credits, and you can start one every 7 days on either plan. A translation is only charged the first time anyone translates that text — after that it's served from cache for free. Reading, dictation, saved vocabulary, and text-to-speech are always free and unmetered. Free gives you 42 credits that reset every 7 days at 00:00 UTC (Monday); Pro gives you 2,000 credits that reset each month. On both plans your credits are shared across every metered action, so you can spend them however you like. If a request fails on our side it isn't counted against you. See our Terms for details.

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