Karl Withak

AI-powered essay coaching.
Your coach, your essays, any device.

Start writing with Karl

Pick a plan to get full access.
Cancel anytime — Karl will be here.

User lookup

Find a user by email — see their plan, papers, and activity.

✦ Invite someone new

Creates their account, grants access, and emails them a "Set my password" link. They just click the link — no sign-up form needed. Link expires in 24 hours.

Grant free access

Give an existing user full paid access without going through Stripe. User must have already signed up.

Revoke access

Remove paid access from a user. Their account stays — they'll just hit the paywall again.

Add promo code

Create a new promo code. You must create the coupon in Stripe first and paste its coupon ID here.

Invite educator

Sends the educator a 7-day invite link so they can set their own password. They'll log in at app.karlwithak.co/edu.

Assign student to IEC

Link a student's Karl account to an IEC's roster. The student must already have a Karl account.

Educator Portal

Karl Withak

Hey — tell me what you're working on
and we'll figure it out together.

What are you working on? — type it out, or use the quick picks below

✦ Which school are you writing for?

Not sure where to start?

Grade level (optional — helps Karl match your vocabulary)

Have a rubric or assignment prompt? Add it here + optional

Got a due date? Add it here + optional

Assign to a class? Optional + optional

Welcome to Karl Withak

Karl coaches students to write better essays — he never writes for them.
Pick a scenario to see Karl in action.

🎓

Common App Personal Statement

A junior working through a meaningful personal story. See how Karl draws out the real essay hiding underneath a first draft.

High school · College admissions

🏫

"Why This School?" Supplement

A senior writing a supplement who keeps listing programs instead of showing real fit. Karl helps them find the specific, personal angle.

High school · Supplemental essay

📝

School Assignment

A younger student writing about a historical figure for class. Karl adapts his coaching style to match the grade level.

Middle school · Class assignment