คำถามทั่วไปเรื่องแพ็กเกจ Free, Pro, Ultra เครดิตฟีดแบ็ก AI รายเดือน นโยบายคืนเงิน 100% ภายใน 2 ชม. และ 50% ภายใน 24 ชม. ภาษาที่รองรับ 12 ภาษา วิธีคำนวณ Band Score ของ AI และการทำงานของสมุดทบทวนข้อผิดแบบ Ebbinghaus
Below is the long-form version of our frequently asked questions. Each answer reflects the current product behaviour at time of publication.
Yes. Every Reading passage, Listening section, Writing Task 1/2 prompt, Speaking Part 1–3 cue card, the full Grammar Book, and the Vocabulary Library are free to browse without an account. Free users can submit up to five graded questions per day and receive three AI Writing/Speaking feedback credits per month. Pro and Ultra plans remove those daily caps.
Writing and Speaking responses are evaluated by an AI model prompted with the official IELTS band descriptors — Task Achievement, Coherence and Cohesion, Lexical Resource, Grammatical Range and Accuracy. We benchmark against Cambridge IELTS published sample essays; in internal evaluation our model agrees within ±0.5 band of the published Cambridge score on roughly 85% of items. Reading and Listening are objectively marked from the answer key and converted using the official 9-band table.
British (UK), American (US), Australian (AUS), and Canadian (CAN). The four IELTS sections rotate accents the same way the real test does.
No. Anonymous usage analytics (Google Analytics 4 with Consent Mode v2, default denied) and crash reports are the only third-party data flows. We never sell or share account data with advertisers.
Subscriptions are non-refundable once service use begins (any test attempt, AI feedback, or paid feature interaction). Customers who never use the service after payment can email support@power-ielts.com within 14 days.
Power IELTS — power-ielts.com