What to confirm before using it
Do not ask only for a score; provide prompt, essay, and target band.
Judge whether the tool result can become a verifiable revision step. The point is not a score promise; it is whether the result names the main blocker, essay evidence, and next-version target.
A tool becomes useful only when it connects to your next essay version.
AI can give fluent explanations, but without essay evidence it is hard to judge whether it hit the issue.
Accurate feedback should point to which essay sentence creates which criterion risk.
Do not ask only for a score; provide prompt, essay, and target band.
After revising one paragraph, check whether the same risk decreases.
These pages explain the Banfen Writing diagnostic and blocker-repair method, Task 1 overview, Task 2 development, and common score blockers.
Submit the prompt and essay to get the main blocker, essay evidence, and next revision target.