Premium

Pricing & Premium

Exactly what costs money here, and what doesn't — no invented tiers.

Free

Grading credits

Submitting a Writing or Speaking attempt for grading needs 1 credit per submission — there is no paid way to buy one on the website. Earn credits for free by:

Logging a real exam result (honor system, capped) — see the credit prompt after grading.
Ranking up in the mobile app's Weekly League, then linking your account back to the website.

Try Speaking →Weekly League →

Subscription

PRO — vocabulary packs

Unlocks every curated word pack (THPT, IELTS, TOEIC, and more) beyond the 4 free tiers, plus the "Add a word with AI" feature. The 4 free vocabulary tiers stay free and unaffected either way.

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Browse the pack catalog →

Pay-per-use

Detailed grading report

After a graded Writing or Speaking attempt, the full report — per-criterion feedback, highlighted edits, a model answer/coaching plan — is a separate, one-time purchase on top of the free grading itself.

English report

35.000 ₫

Vietnamese report

50.000 ₫

Purchased directly from your grading result screen, once you have a real attempt to buy a report for.