LingoForge - AI IELTS Prep: Practice All 4 Skills

LingoForge is an AI-powered English proficiency exam preparation platform built by Marvis LLC, delivering full preparation for IELTS (Academic & General Training) and TOEFL, with a multi-exam architecture reserved for SAT, GMAT, GRE, HSK, and JLPT. The platform's core value is replacing the slow, expensive, inconsistent feedback loop of human tutoring with an AI grading engine calibrated to the official IELTS and TOEFL scoring rubrics — instant, rubric-accurate, and available 24/7 at a fraction of the cost.

Exams	IELTS (Academic & General Training), TOEFL (2026 dual scoring)
Sections	Writing (Task 1 & 2), Speaking (3 parts / 4 tasks), Reading, Listening
AI grading	Official rubric criteria, conservative scoring, per-criterion band + inline corrections + model rewrite
Study tools	Adaptive study plan, Band Score Analytics, Smart Vocabulary (3,000+ AWL), ForgeAI in-context chat
Languages	English, 简体中文, 日本語, 한국어, ภาษาไทย, Tiếng Việt
Markets	China (incl. HK/Macau/Taiwan), Japan, Korea, Southeast Asia
Results	4,000+ students trained · 7.0+ avg band · 92% reach target · +1.0 band in 4 weeks
Pricing	Weekly & monthly subscriptions · 3/6-month band-improvement guarantee · 7-day money-back · 20% Founding Member lifetime discount
Payments	Credit-card auto-renew · Alipay / WeChat Pay (one-time)

Table of Contents

• Overview
• Who It Is For
• What LingoForge Does
  • IELTS Writing — Task 1 & Task 2 AI Feedback
  • IELTS Speaking — AI Speaking Coach
  • IELTS Reading & Listening
  • Smart Vocabulary Training
  • Adaptive Learning Path & Band Score Analytics
  • ForgeAI — The In-Context Study Companion
• How AI Grading Works
• AI Practice vs. Human Tutor
• Proven Results
• Pricing & Guarantees
• The Practice Experience
• Content & Admin Pipeline
• Why LingoForge Works
• Getting Started

Overview

LingoForge is an AI-powered language examination preparation platform built by Marvis LLC to help students reach their target band and scaled scores on the world's most competitive English proficiency exams. Today the platform delivers full, production-grade preparation for both IELTS (Academic and General Training) and TOEFL, with a multi-exam architecture that already reserves schema for SAT, GMAT, GRE, HSK, and JLPT as the product expands.

The core thesis is simple: the single biggest bottleneck in exam preparation is not a lack of study material — it is the lack of timely, rubric-accurate, repeatable feedback. A human tutor gives great feedback but is expensive, slow to schedule, and inconsistent from session to session. LingoForge replaces that bottleneck with an AI grading engine calibrated to the official IELTS and TOEFL scoring rubrics, available instantly, around the clock, at a fraction of the cost of private tutoring. Students write an essay or record a speaking response and receive a criterion-by-criterion band score, inline corrections, vocabulary upgrades, and a model rewrite within seconds — every single time, with consistent standards across every submission.

LingoForge is built for a global audience and is particularly focused on candidates across China (including Hong Kong, Macau, and Taiwan), Japan, Korea, and Southeast Asia (Thailand, Vietnam, and beyond). The interface ships in six languages — English, Simplified Chinese, Japanese, Korean, Thai, and Vietnamese — so students can prepare in the language they think in while practicing the English they will be tested on.

Who It Is For

LingoForge serves a broad spectrum of test-takers:

• University applicants targeting admission to top institutions that require IELTS 6.5–7.5 or a competitive TOEFL score, with no individual section below a stated minimum.
• Postgraduate and professional candidates pursuing Medicine, Law, or research programmes where Band 7.5+ in every section is the baseline.
• Working professionals balancing full-time jobs with evening and weekend study, who cannot commit to fixed tutor schedules and need feedback on demand.
• Self-studiers who have the discipline to practice but lack anyone qualified to grade their writing and speaking against the official rubrics.
• Repeat test-takers who have sat the exam once, fallen short on one or two sections, and need targeted, high-frequency practice to close the gap before their next attempt.

The platform's onboarding captures each student's exam type, target score, current English level, prior exam experience, study timeline, exam date, focus skill, and intended study destinations. That profile drives a personalised study plan and lets the analytics layer project an exam-day score that reflects the student's actual trajectory rather than a generic benchmark.

What LingoForge Does

LingoForge covers all four IELTS sections and the full TOEFL test, with AI feedback woven through every productive skill.

IELTS Writing — Task 1 & Task 2 AI Feedback

Students submit an IELTS Writing Task 1 (data description for Academic, letter for General Training) or Task 2 (argumentative essay) response and receive rubric-based scoring across the four official IELTS Writing criteria: Task Achievement, Coherence & Cohesion, Lexical Resource, and Grammatical Range & Accuracy. Each criterion receives its own band estimate alongside detailed feedback — inline corrections pinpointing grammar and cohesion errors, vocabulary upgrades that lift lexical resource toward Band 7+, and a full high-score rewrite of the student's own essay so they can see exactly what a Band 7.5 version of their argument looks like. The platform supports both Academic and General Training tracks, with reading and writing content tailored per track, and lets students switch tracks at any time from the dashboard.

A free, no-signup demo lets any visitor paste a Task 2 essay on a chosen archetype — Opinion, Discussion, Problem & Solution, Advantages & Disadvantages, or Two-Part Question — and get an instant AI rubric grade across all four criteria. The first grade is free; full annotations, rewrites, and personalised suggestions unlock with a free trial.

IELTS Speaking — AI Speaking Coach

The AI Speaking Coach evaluates recorded responses across all three IELTS Speaking parts: Part 1 (Introduction and Interview), Part 2 (Long Turn with a cue card), and Part 3 (Two-way Discussion). After each response, students receive instant feedback on pronunciation accuracy, fluency and coherence, lexical resource, and grammatical range — the same four criteria used by certified IELTS examiners. Students can record an answer, review the auto-generated transcript, and practice repeatedly until their band estimate improves. The same architecture powers TOEFL Speaking, where a full four-task simulation pairs text-to-speech narration of prompts with Whisper-based speech-to-text transcription and LLM grading against the ETS rubric.

IELTS Reading & Listening

Authentic practice across all four IELTS Listening sections — social conversations, monologues, educational discussions, and academic lectures — exposes students to British, Australian, and North American accents so they are not caught off guard on test day. Reading practice covers the nine official IELTS Reading question types with proven strategies, speed-reading techniques, and time management guidance. Full mock tests simulate real exam conditions and feed every attempt into the analytics layer.

Smart Vocabulary Training

A spaced-repetition system built around the 3,000+ word IELTS Academic Word List helps students develop the lexical range expected at Band 7 and above. AI-powered flashcards present words in context rather than as isolated definitions, so students learn collocations and usage patterns — the difference between recognising a word and deploying it correctly in an essay.

Adaptive Learning Path & Band Score Analytics

The AI diagnoses a student's current band level across all four sections and builds a personalised study plan that targets their specific weak areas week by week. Band Score Analytics tracks section-by-section predictions, performance trends, and a projected exam-day score that updates after every practice session — so a student always knows whether they are on track for their target and exactly which criterion is holding them back.

ForgeAI — The In-Context Study Companion

Beyond one-shot grading, LingoForge includes ForgeAI, a conversational assistant accessible from the sidebar and from "Ask ForgeAI" buttons embedded in writing practice. ForgeAI opens a chat pre-loaded with full writing context — the prompt, any sample answer, the student's draft essay, and the AI-generated practice hints — so students can ask follow-up questions like "Why did I lose marks on Coherence here?" or "Rewrite my second paragraph at Band 8" without re-explaining their situation. Practice hints themselves are generated by an AI service that produces tailored, prompt-specific guidance, cached for speed with staleness detection so the hints stay fresh as the underlying models improve.

How AI Grading Works

LingoForge's grading pipeline is designed to mirror, as closely as possible, the process a certified examiner follows — with the advantages of speed, consistency, and cost.

1. Submit your response. Write the essay or record the speaking response exactly as in the real exam. The platform supports both IELTS Academic and General Training formats and the full TOEFL task set.
2. AI evaluation. The response is evaluated against the official criteria — the four IELTS Writing/Speaking criteria, or the ETS rubric for TOEFL — using a conservative scoring approach. LingoForge would rather give a realistic score than an inflated one, so the band a student sees in practice is the band they should expect under exam conditions.
3. Detailed feedback. The student receives a band score per criterion, inline corrections, vocabulary upgrades, and actionable suggestions — all aligned to the official rubric, so improvement effort maps directly to the criteria examiners reward.

For TOEFL, the platform supports the 2026 dual scoring system: a 1.0–6.0 band scale alongside the legacy 0–30 scale, with CEFR-level mapping and score conversion utilities. UI components display dual score badges — band, legacy, and CEFR — so students can interpret their performance whichever scale their target institution uses.

AI Practice vs. Human Tutor

LingoForge is explicit that AI grading and human tutors are complementary, not substitutes. The platform's own comparison frames the trade-off honestly:

LingoForge AI	Human Tutor
Official rubric, conservative scoring	Personalised coaching for specific weaknesses
Instant feedback on every attempt	Nuanced feedback on style and tone
Available 24/7 at a fraction of the cost	Best for targeted guidance near test date
Consistent standards across all submissions	Higher cost per session

The recommended pattern is to use AI for high-frequency practice iterations — the dozens of essays and speaking attempts that build muscle memory — and to bring in a human tutor for targeted guidance in the final weeks before test day. LingoForge is built to be the volume layer that makes that final, expensive tutor hour far more productive.

Proven Results

The platform reports consistent outcomes across its student base:

• 4,000+ students trained worldwide.
• 7.0+ average band score achieved by students on the platform.
• 92% success rate — the share of students who reach their target IELTS band score, with many exceeding Band 7.0 and securing admission to top universities.
• +1.0 average band improvement in as little as four weeks of consistent practice with AI-guided feedback — moving students from Band 6.0 to 7.5 on a realistic timeline.

Pricing & Guarantees

LingoForge uses simple, transparent subscription pricing with no hidden fees and the ability to cancel anytime. Plans include weekly and monthly options, with 3- and 6-month plans carrying a band score improvement guarantee: if a student does not improve their overall IELTS band by at least 0.5 after consistent practice (defined as completing at least three full mock tests and following their personalised study plan), the subscription is extended for free until they do. A 7-day money-back guarantee applies to all paid plans.

A Founding Member program rewards early supporters: students who complete a one-minute onboarding survey lock in a 20% lifetime discount plus a one-month free trial on 3- and 6-month plans. Subscriptions are managed through Stripe, with one subscription per exam type per user — so a student can hold an IELTS and a TOEFL subscription simultaneously, each linked to the relevant exam profile. Payment supports credit-card auto-renew as well as Alipay and WeChat Pay one-time payments for students in regions where those are preferred.

The Practice Experience

A student's journey on LingoForge follows a clear lifecycle: Registered → Verified → Onboarded → Subscribed. After email verification, an eight-step onboarding survey captures exam type, target score, English level, exam experience, study timeline, focus skill, study destinations, and referral source. That profile powers the personalised study plan and the home dashboard, which shows the student's exam journey, subscription status, target score, and focus area at a glance. Students can create and manage multiple exam profiles — for example, preparing for both IELTS and TOEFL — and switch between them from a profile switcher.

Practice itself is organised by section and exam. Writing practice presents a prompt, accepts a rich-text essay, and returns a graded rubric with annotations. Speaking practice records audio in-browser, transcribes it, and grades the transcript against the speaking criteria. Reading and listening practice present authentic passages and audio with the official question types and immediate scoring. Every attempt is logged, fed into Band Score Analytics, and reflected in the projected exam-day score. The settings area lets students manage their profile, avatar, display name, interface language, and security — including password reset via email and passkey-based authentication.

Content & Admin Pipeline

Behind the student-facing product is a content engine that lets the LingoForge team rapidly expand the question bank. A multi-phase PDF import pipeline ingests authentic exam books — OCR of every page, classification of sections, structuring into exams and question groups, parsing of questions and correct answers, and a verification pass — with retry and resume support so a failed phase can be re-triggered without restarting the whole job. Separate savers handle each IELTS and TOEFL section, and an admin management system handles audio upload and rich-text content editing. This is what allows LingoForge to offer authentic, full-length mock tests rather than a thin set of sample questions.

Why LingoForge Works

The platform's methodology rests on three pillars:

• Personalised learning. AI diagnoses a student's current band level across all four sections and targets the specific criteria holding their score back — not generic "improve your writing" advice, but "your Lexical Resource is at Band 6.0 because you repeat vocabulary and lack collocations; here are five upgrade suggestions for your last essay."
• Faster results. The combination of instant feedback and unlimited practice iterations compresses the feedback loop from days (waiting for a tutor to mark an essay) to seconds. Students average a +1.0 band improvement in four weeks of consistent practice.
• Proven success. 92% of students reach their target band, with the platform's conservative scoring ensuring that the band they see in practice is the band they can defend on test day — not an inflated number that collapses under real exam pressure.

Getting Started

New students can try LingoForge without any commitment: the free IELTS Writing demo requires no signup and no credit card, and returns an instant AI rubric grade on a submitted essay. From there, a free trial unlocks unlimited grading, full mock tests, the AI Speaking Coach, vocabulary training, and the full analytics dashboard. The Founding Member program is available during onboarding for students who want to lock in the lifetime discount. With a 7-day money-back guarantee, a band-score improvement guarantee on longer plans, and the ability to cancel anytime, the risk of trying LingoForge sits with the platform, not the student.

LingoForge is the AI-powered exam preparation companion for students who are serious about reaching their target band — built to make the feedback loop that drives real improvement available to everyone, not just those who can afford a private tutor.