For seniors with supplements due at every school
Supplemental Essay Writer for Every School
Paste your college list and drop your résumé or essays. River finds each school's 2026–27 prompts and drafts every supplement at its limit.
Free to start. No card needed.
| College · prompt | Limit | Draft | To fill |
|---|---|---|---|
| Columbia · Why Columbia | 150 words | 147 words | Nothing |
| Columbia · A disagreement | 150 words | 149 words | [what Priya said] |
| Columbia · List of texts | 100 words | 38 words | Nothing |
| Yale · An idea that excites you | 200 words | 194 words | [cabinet temperature] |
| Yale · Not in your application | 200 characters | 186 characters | Nothing |
| Penn · Thank-you note | 50–200 words | 171 words | [Mr. Okafor's first name] |
Example tracker River built for a student applying to Columbia, Yale and Penn. Prompts and limits come from each college's 2026–27 page.
What you'll get
Every school's 2026–27 supplements, planned and drafted from your stories
- Each college's 2026–27 prompts quoted word for word, with limits and links
- A story plan that matches your experiences to prompts, with no story repeated at one school
- Every supplement drafted at its limit, plus a tracker of word counts and what to fill
Real 2026–27 prompts
The supplement types you'll see, in real prompts
Most supplemental questions fall into a few types. Each example below is quoted from the college's own page for 2026–27 applicants, the same way River looks up yours.
| Type | Real prompt, word for word | College and limit |
|---|---|---|
| Why us | “How will you explore community at Penn? Consider how Penn will help shape your perspective, and how your experiences and perspective will help shape Penn.” | Penn · 50–200 words |
| Why your major | “What attracts you to your preferred areas of study at Columbia College or Columbia Engineering?” | Columbia · 150 words or fewer |
| Community | “Reflect on your membership in a community to which you feel connected. Why is this community meaningful to you? You may define community however you like.” | Yale · one of three prompts, 400 words or fewer |
| Intellectual curiosity | “Tell us about a topic or idea that excites you and is related to one or more academic areas you selected above. Why are you drawn to it?” | Yale · 200 words or fewer |
| Short answer | “What is something about you that is not included anywhere else in your application?” | Yale · 200 characters, about 35 words |
| List | “List the titles of texts, resources and outlets that have contributed to your intellectual development outside of academic courses, including but not limited to books, journals, websites, podcasts, essays, plays, presentations, videos, museums and other content that you enjoy.” | Columbia · 100 words or fewer, items separated by commas or semicolons |
| Something different | “Write a short thank-you note to someone you have not yet thanked and would like to acknowledge.” | Penn · 50–200 words |
Quoted from Penn's 2026–27 prompts, Columbia's 2026–2027 Columbia-Specific Questions (updated July 28, 2026) and Yale's essay topics for the 2026–27 cycle. Checked October 6, 2026.
Before and after
Your list and stories in. Every supplement out.
Columbia (engineering), Yale, Penn (engineering). Résumé attached. I work Saturdays at my family's bakery in Edison and fixed our proofing cabinet when the thermostat died. I program for our robotics team and argued with Priya about switching to swerve drive. I read Ted Chiang. Mr. Okafor, our night baker, taught me to read dough.
Story plan Proofing cabinet repair → Yale: an idea that excites you · Columbia: areas of study Swerve drive argument → Columbia: a disagreement Mr. Okafor → Penn: thank-you note Penn · Thank-you note · 50–200 words “Mr. Okafor, you never told me when the dough was ready. You made me press it and wait…” 171 words To fill [Mr. Okafor's first name] How do you address him in the note?
One story can serve similar prompts at different schools, but never twice at one college. Every fact comes from the paste.
Why it works
How do you write supplemental essays for every school on your list?
Supplemental essays are the extra questions each college adds to your application, and the number depends on the school. For 2026–27, Penn asks every applicant two short answers plus one for your chosen school, Duke requires two, and Yale asks for a 200-word answer, three short takes and a 400-word essay. Paste your college list and drop your résumé or essays. River's supplemental essay writer finds each school's current prompts, then drafts every one from your own stories.
River reads each college's own admissions pages and quotes its prompts word for word, with the limit and a link. If a school hasn't confirmed its 2026–27 questions, River says so and links the page to check instead of guessing. Then it plans across your whole list: which story answers which prompt, reusing your best material for similar questions at different schools but never telling one college the same story twice. Every draft sits at its limit, with its exact count.
Each draft uses only what you gave. When an answer needs a detail only you know, like a teacher's name or how many weeks something took, River leaves a bracket and lists it. The summary table at the end doubles as a supplemental essay tracker: college, prompt, limit, draft word count and what to fill. Up to five colleges run at once. For one school's why us question in depth, use the why this college essay writer, and for California, the UC PIQ writer.
What lands in your doc
What's in your supplements
- Each college's 2026–27 prompts quoted word for word, with the exact limit and a link
- A story plan showing which experience answers which prompt, with no story repeated at one school
- A complete draft of every prompt at its limit, built only from your own material
- Why us answers that name real courses and programs from the college's site, each one linked
- Short answers and lists in each college's format, counted in words or characters as required
- A summary tracker with college, prompt, limit, draft word count and every bracket left to fill
How it works
From your list to every draft
Paste your list
Paste up to five colleges and drop your résumé, Common App essay or notes. Messy is fine.
Find the prompts
River opens each college's admissions site and quotes its 2026–27 prompts and limits word for word.
Plan and draft
It matches your stories to prompts across schools, then writes every answer at its limit.
Fill and track
Fill the brackets, check the tracker, then grade any answer or run your next five colleges.
How to write supplemental essays yourself
Start with a spreadsheet, not a draft. List every college, each prompt and its limit, and copy the wording from the college's own site, because prompts change from year to year. Then group similar prompts. Most lists repeat a handful of types: why us, why your major, a community you belong to, an idea that excites you, and short answers or lists. Five colleges can mean fifteen answers but only six or seven distinct stories, so grouping them first saves a lot of rewriting.
Next, take stock of your material. Write down ten specific stories or facts: a job, a project, a family role, a disagreement, a book you keep thinking about. Give each prompt one story, so every college sees a different side of you. Keep your personal statement's story out, too; Penn's admissions office notes that it doesn't need short answers that summarize the rest of your application. A story can travel between colleges if you rewrite it for each prompt.
Write the short answers first; they warm you up and fill gaps. For why us prompts, research the college's own pages and name a course, program or person that connects to something you've done. Penn's admissions office suggests a test: if someone who knows you read it without your name, would they know you wrote it? Draft long, cut to the limit, and count the way the application does. Then read each college's set together to catch repeats.
Questions applicants ask
Common questions
How many supplemental essays do I have to write?
It depends on your list. For 2026–27, Penn asks every applicant two short answers plus one for your chosen school, Duke requires two and offers one optional, and Yale asks for five pieces of writing. Paste your list and River counts every required prompt, quotes it with its limit and drafts each one.
Can AI write my supplemental essays?
Yes. River finds each college's 2026–27 prompts, plans which of your stories fits each one, and drafts every answer inside its limit from your own material. It leaves a bracket where it needs a detail only you know. You decide what to keep, change or rewrite before you submit.
Can I reuse a supplemental essay for different colleges?
Yes, for similar prompts at different schools. A community answer for Yale can become Duke's communities answer if you rewrite it to the new question and limit. Never send one college the same story twice, and change every why us detail for each school. River's story plan shows where each story goes, so nothing repeats where it shouldn't.
When are supplemental essays due?
With each college's application, so your early deadlines come first. For 2026–27, Duke lists November 2 for Early Decision (ED) and January 4 for Regular Decision. Write the early schools' supplements first, then the rest before winter break. Paste your list in deadline order and River drafts the first five colleges first.
Where do I find a college's 2026–27 supplemental prompts?
On the college's own admissions site, usually under apply or essays, and in the Common App once you add the college. Prompts change from year to year, so check the cycle label. River quotes each prompt from the official page with a link and says so if a college hasn't posted 2026–27 questions. Stanford's eight are quoted in full on River's Stanford supplemental essays page.
Is the supplemental essay writer free?
Yes, you can start on the Free plan, which includes AI usage and needs no credit card. Your drafts and tracker land in your own River workspace, where you can keep versions and grade answers. If you reach the limit, usage pauses until you upgrade. Paid plans start at $14 a month on the pricing page.
Your next step
More for your application
Start with your list and one résumé
Paste your colleges and drop what you have. River finds this year's prompts and drafts every answer from your stories.