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Study app Live

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 never repeats a question, 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 brief

A prep coach, not a workbook.

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, day one, the first version

Day one: brief to installable.

A working coach, installable and offline, with a real question bank and an adaptive engine behind it, came together through a focused first pass. The build path:

00:00

Shape the daily loop

Decide the one job the app does every day: a single focused plan the student can finish in a sitting. Lock the skill map that every SAT and ACT domain hangs off of.

02:00

Write and verify the question bank

284 original questions, each tagged to a skill and each answer checked independently. No borrowed items, no wrong keys: the bank the whole app draws from is trustworthy from the start.

06:00

The adaptive diagnostic

A short diagnostic that estimates each skill from real answers, then recommends SAT or ACT based on where the student is actually stronger, not a guess.

10:00

The spaced-repetition engine

Reviews come back at 1, 3, 7, 14, and 30 days, and each one serves a fresh question of the same skill, so nothing gets memorized. It teaches the skill, not the item.

14:00

Math and figure rendering

Dependency-free rendering for math and figures: no heavy library pulled in, so the app stays light, loads fast, and still works with no signal.

18:00

The auto-driving daily plan

Open the plan and the timer starts itself; as the student works, each step checks itself off. The parent progress view reads from the same record, so a parent can glance and see the day.

22:00

Make it installable and offline, ship Live

The service worker caches the whole app, the manifest adds it to the home screen, and an optional Claude tutor sits on top with a local fallback. Then live, installable, and working offline.

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
The Summit Prep Coach login and landing screen
The way in · private, on the phone
/ 03 · the outcome

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.

What a year of test prep usually runs

$1,500–$8,000

A tutoring package or a big-name prep course is the going rate for a senior year of SAT or ACT prep. The Pagecrafter built a private coach instead, installable and offline, with a verified question bank and an adaptive engine, owned outright, with no monthly fee behind it. Your build gets scoped to your job, not to a quote sheet.

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.