College Essay Grader

Receive instant feedback on your college essays so you know what to improve and how to fix them.

Grades your essay using actual admissions rubrics and data

Pinpoints weak spots, vague language & missing elements

Instant scoring — your first essay is completely free

Get Started For Free

Students who used LumiSource have gotten into all the Top 25 colleges.

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Exact Criteria

Instant Essay Grading

Get your essay scored in seconds. Our AI is trained on 10,000+ essays accepted to top universities, providing a precise, trustworthy benchmark of your essay's strength.

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Admissions Data

Rubric-Based Scoring

Our AI uses actual admissions criteria from top universities to evaluate your essay. Get a breakdown of your performance across key categories like clarity, originality, and introspection.

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Holistic Review

Targeted Suggestions to Improve

Alongside your grade, you'll receive smart suggestions to boost weaker areas. Whether it’s structure, flow, or content — we tell you exactly where and how to improve.

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Why the Smartest Applicants Use Our Grader

We built LumiSource to give smart applicants an unfair advantage. If you're not using it then you're already behind.

4.6x more likely to get in

Students who used Lumi were 4.6x more likely to get accepted to their top choice — Stanford, Harvard, etc.
(Yes, we actually tracked the data.)

You only get one shot

Essays can make or break your app — and there are no do-overs. Smart applicants make sure theirs hit the mark.
LumiSource is how they do it.

The best way to avoid "what if."

The worst part isn't getting rejected — it's wondering if one better draft could've changed everything.
Don't leave it to chance.

Ready to Find Out Your Score?

If you don’t know what’s wrong, you can’t fix it. Our grader shows you exactly what to improve — instantly.

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Frequently Asked Questions

Have any more questions? Contact our support team to get what you need.

info@lumisource.io

Being a good writer isn't the same as writing a successful college essay. Admissions officers aren't grading your grammar, they're scanning for specific signals, patterns, and story elements that show you're exactly what their school wants. Most students, even strong writers, miss the mark because they don't know what to aim for. LumiSource does. We've analyzed thousands of accepted essays and built our evaluation system around the exact patterns admissions officers are trained to look for — the subtle cues most students miss entirely, the ones that subtly say, "admit this one." Top applicants use LumiSource not just to make their essays sound good, but to make sure they actually work.

Yes, and way more then you think. Every year, tens of thousands of students apply with perfect GPAs, top test scores, and stacked resumes — and still get rejected. Why? Because numbers don't make decisions — people do. And the essays are the only part of your application that shows who you are beyond the stats. Admissions officers are skimming thousands of applications. If your essays don't immediately make a case for you, you're out. One forgettable essay can erase four years of hard work — and it happens every year.

Your friend isn't deciding who gets into Stanford. And your teacher isn't reading essays side-by-side with thousands of other top applicants. LumiSource is built to think like an admissions officer — trained to spot the gaps, signals, and red flags that actually affect your chances. This isn't about getting compliments. It's about getting in.

LumiSource does way more than just essay reviews. While our essay feedback is what most students upgrade for, the platform also guides you through the full college application journey — from building your college list to tracking deadlines, organizing recommendations, and submitting on time. It's like having a personalized application hub to make sure nothing slips through the cracks. Whether you're just starting or deep in the process, LumiSource helps you save time, stay in control, and reduce the stress of managing everything alone — all in one place.