Why I Built an AI IELTS Grader That Replaces the $50-Per-Essay Human Tutor

A founder story. Originally published on englishaidol.com . This version syndicated with permission. TL;DR: I'm a TESOL-certified English teacher. I watched thousands of international students hit a wall because they couldn't afford human writing feedback. So I built an AI that gives instant band-score feedback on IELTS and TOEFL writing, calibrated to the same rubric real examiners use. It's free. Here's the story. A student emailed me in 2023. She was from a small city in Vietnam. Her target university in Canada required IELTS band 7.0. She was stuck at band 6.0 and her test was in six weeks. She'd already taken it twice. Each retake cost $240 -- more than a month's income for her family. She couldn't afford a third. She asked me if I could review her writing samples. I said yes, I'd do it for free. She sent me 30 essays. I didn't know what to say. Her vocabulary was solid. Her grammar was strong. But she was making the same five mistakes in every single essay -- mistakes I could spo