Founder's product · Online
Grind1600
SAT prep web app
- Role
- Co-founder: design and development
- Built with
- Hand-coded web app (Next.js)
- Year
- 2026
The brief
Grind1600 is an SAT prep app co-founded by Mirador's founder to help students study for the Digital SAT. Instead of handing everyone the same question bank, it builds each student a plan from their scores and test date, then drills the question types they miss most until they stop costing points. Students also get full-length practice tests, an AI tutor and their progress on one dashboard.
What we built
Made for the people who use it.
01
A dashboard students come back to
Today's plan, streaks and the days left until the test, all on one screen.
02
Progress you can see
Charts show which skills are improving and which still cost points.
03
Payments that just work
Subscriptions, promo codes and a billing portal through Stripe.
Designed for phones first.
Under the hood
- Next.js (App Router), React, TypeScript and Tailwind CSS on Vercel
- PostgreSQL database with Prisma
- Sign-in with email or Google
- Stripe subscriptions, promo codes and billing portal
- In-app AI tutor built on Claude
- Transactional email, rate limiting and error monitoring
What this means for your business
If you need online booking, payments or customer accounts, we've built them before, for a real product.
Want something like this for your business?
Text us and tell us what you do. The first look at your current site is free.
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