The tutor places your level, teaches one rule, drills you on it — error-correction, then sentences you write yourself — then runs an autopsy on the pattern behind what you got wrong before marking the concept mastered. Get an answer wrong and it hints; it never hands you the fix outright.
Every great score starts
in the margins.
A GRE and IELTS writing coach that teaches one grammar concept at a time, drills you until it holds, grades full essays against the exam boards' own published standards, and line-edits whatever you paste in — alongside six reading and vocabulary drills. All on one account, all kept in one place.
Six ways to work
One account, one track at a time — GRE or IELTS, switchable from the header. Everything below writes to the same history.
GRE: the 30-minute Analyze an Issue task, scored 0–6 in half points against whichever of ETS's six official instruction sets the prompt carries. IELTS: Task 1 or Task 2, banded 0–9 on the four official criteria. Every error is marked up in red, and the weakest paragraph is rewritten so you can see the gap directly.
Paste one sentence or several paragraphs. It asks where the writing is headed first — exam essay, academic paper, work email, casual message — because the same sentence is a fault in one register and fine in another. Every mistake is named, explained, and marked up as a word-level correction, with a couple of cleaner rewrites underneath.
Error-correction pulled across every concept you've studied, in unpredictable order — the concept isn't named until you answer, then a miss returns a full teach card: the rule, the terms, the trap, worked examples.
Tag every word in a real exam-style sentence with its part of speech, then see a reason for each one — a mistagged word gets the same full rule card lesson mode uses, not just a correction.
Sentence Simplifying, Sentence Rephrasing, Sentence Function, Main Idea and Active Reading work a shared pool of real exam passages — you get the analysis, not just a verdict, and every term a drill names is explained in the app, in fixed authored teaching that never reaches a model. Vocab Mountain is a 1,110-word GRE climb where you write the example sentence yourself and record whether the word is positive, negative or neutral.
Graded against the published standard
Not a house rubric. The examiner reads the same language the exam boards publish, so a score means what the board says it means.
ETS · GRE Analytical Writing scoring guide
- Level 4
Generally demonstrate control of the conventions of standard written English, but may have some errors.
- Level 5
Conveys ideas clearly and well, using appropriate vocabulary and sentence variety.
- Level 6
Conveys ideas fluently and precisely
, withsuperior facility with the conventions of standard written English.
Held against all six official Issue instruction sets, not graded in the abstract.
IELTS · public Writing Band Descriptors
- Band 6
A mix of simple and complex sentence forms
, with errors thatrarely reduce communication.
- Band 7
A variety of complex structures
andfrequent error-free sentences
, withgood control of grammar and punctuation.
- Band 8
A wide range of structures
wherethe majority of sentences are error-free
, withonly very occasional errors or inappropriacies.
Task 1 and Task 2 are graded on different first criteria — Task Achievement and Task Response — because the descriptors treat them differently, too.
What a call costs
Model access is part of the service. You never supply an OpenAI or Anthropic key, and no key ever reaches your browser — every call is proxied by the backend and paid for by whoever runs this install.
Credits are how that spend is shared out. Each action costs a fixed amount, and a failed or empty response is refunded automatically — you are never charged for an answer you did not get.
| Action | Cost on this install |
|---|---|
| Lesson turn | 1 credit(s) |
| Mixed practice turn | 1 credit(s) |
| Parts of speech turn | 1 credit(s) |
| Proofread pass | 2 credit(s) |
| Essay grade | 5 credit(s) |
| Sentence Simplifying drill | 3 credit(s) |
| Sentence Rephrasing drill | 3 credit(s) |
| Sentence Function drill | 4 credit(s) |
| Main Idea drill | 3 credit(s) |
| Active Reading run | 3 credit(s) ×2 |
| New account starts with | 10 credit(s) |
An Active Reading run bills twice — once for the passage blueprint, once for the questions.
These are this install's current configured costs, set by whoever runs it — they can differ install to install.