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Summit Prep
Coach.

A focused daily SAT and ACT coach in your pocket: a diagnostic that reads your real answers and points you at SAT or ACT, adaptive practice that meets you where you are, a review engine that serves a fresh question of the same skill each time, and a parent progress view. It started as a study tool for one rising senior.

InstallableOfflineNo backendAdaptive diagnosticSpaced repetitionParent progressVanilla JS
The Summit Prep Coach daily assignment screen, signed in, showing the day's plan with a timer and steps that check themselves off
284
Original tagged questions
SAT + ACT
Every domain covered
1/3/7/14/30
Spaced-review day intervals
0
Backends, frameworks, app stores
/ 01 · the problem
01 · Goal

One daily habit that adapts

A rising senior needed to prep without drowning in a giant book or a paid course. The brief: open the app, get one focused daily plan, answer real questions, and let the app decide what comes next.

02 · Constraint

Private, offline, no store

No accounts to sign up for, no data leaving the phone, no app-store wait. It had to install straight from a link, work on the bus with no signal, and cost nothing to run.

03 · Bar

Every question verified

Prep is worthless if the answer key is wrong. Every one of the 284 questions is original, tagged to a skill, and independently verified, so the practice can be trusted.

/ 02 · the build

The first version: brief to installable.

Built and deployed in a single day

What shipped

  • 284 original questions, tagged to a skill across every SAT and ACT domain, each answer independently verified.
  • An adaptive diagnostic that estimates each skill from real answers and recommends SAT or ACT.
  • A spaced-repetition engine at 1, 3, 7, 14, and 30 days, always a fresh question of the same skill.
  • Dependency-free math and figure rendering, so no heavy library and the app stays light.
  • An auto-driving daily plan: the timer starts itself and steps check themselves off as the student works.
  • An installable, offline PWA with a parent progress view and an optional Claude tutor with a local fallback.
The Summit Prep Coach daily assignment, signed in: the day's plan with a self-starting timer and steps that check off
The daily plan · it drives itself
/ 03 · what shipped

A coach built at AI speed.

Summit Prep Coach installs straight from a link and works offline. It runs a real question bank, adapts to the student, and shows a parent where things stand, with no backend to run and no app store in the middle. The same care as a website, on a phone, and owned outright.

See it live
Open it on your phone

It's built for a phone screen. Open it on mobile and tap Add to Home Screen to install it like a real app, then turn off your Wi-Fi and watch it keep working.