your personal practice coach

Study smarter,
and actually remember it.

Ace turns your classes and SAT prep into short daily practice built around how memory really works — so what you learn sticks when it counts.

Built for the SAT and every school subject — grades 9–12.
Biology · OsmosisMULTIPLE CHOICE
Which way does water move across the membrane?
AHigh solute to low solute
BLow solute to high solute
CWater doesn't move at all
why
Water chases the solute it can't reach — it flows toward the higher concentration, evening things out.
your call

You're in control of your learning.

Ace adapts to you — but you're the one holding the wheel. Nudge it, question it, push it harder. It's your practice, on your terms.

Set your own difficulty

Too easy? Tap to level up. Too tough? Ease it down. The challenge bends to you — not the other way around.

Tell Ace what you need

Ask for more examples, a different style, harder problems. Say what's working and it adapts to how you learn best.

Ask until it clicks

Stuck on anything? Your tutor is right there for as many follow-ups as you want — no judgment, no rushing.

Own your progress

Your streak, what you've mastered, what's still shaky — it's all yours to see, so you always know where you stand.

Every session is proof you're getting better — and that progress is yours to keep.

see it in action

Honest practice, with help right when you need it.

we found a real gap
You felt sure— and missed it. That's the most valuable kind of mistake, and Ace fixes it on the spot with one more question to lock it in.
ShakyUnsureCertain
ask ace
Wait, why isn't it the other direction?
Great question. Think of solute like a crowd water can't push through — so the water itself moves toward the crowd instead. Want a quick example?
yeah show me
your progress
12day streak
Cell organellesmastered
Osmosisdue
Stoichiometrynew
what you get

Everything working toward one thing: it sticks.

Answer from memory

Every question makes you retrieve the idea yourself — the single most powerful way to move it into long-term memory.

Know what you really know

Rate your confidence before each answer. Ace hunts down the dangerous gaps — the ones you were sure about but got wrong — and fixes them first.

Comes back right on time

Smart spaced repetition brings each idea back just before you'd forget it, so staying sharp takes minutes a day, not cram sessions.

Built from your own notes

Paste a syllabus or your class notes and Ace writes practice questions tailored to exactly what you're studying right now.

A tutor on every question

Stuck or curious? Tap “learn more” for a deeper explanation, then ask Ace follow-ups until it truly clicks.

Grows with you

Questions match your grade and level — and climb from Core to Expert as you get stronger, so you're always challenged, never bored.

Re-reading your notes feels like studying — but you remember what you pull from memory, not what you skim. Ace is built entirely around that one proven idea.

the methods, in plain english

Built on what researchers actually know about learning.

Ace isn't flashcards with a fresh coat of paint. Every part of it comes from decades of cognitive-science research on what actually makes learning last.

Active recall
Pulling an answer from memory builds far stronger memory than re-reading ever could. Every Ace question makes you retrieve, not just recognize.
Spaced repetition
Reviewing at growing intervals — right before you'd forget — is the most efficient path to permanent memory. Ace times every review for you.
Confidence calibration
Knowing how sure you are is its own skill. Rating your confidence trains it, so you're never blindsided on test day.
Hypercorrection
The mistakes you felt sure about, once fixed, stick better than almost anything. Ace seeks those out and closes them on the spot.
Desirable difficulty
A little struggle is the point — it's what makes memory grow. Questions stay just hard enough to stretch you, never to crush you.
how it works

Up and running in a couple of minutes.

1

Add your subjects

Pick SAT topics or paste your class notes — Ace builds a personalized skill map and writes the questions.

2

Practice a few minutes a day

Answer from memory, rate your confidence, and see exactly why — with a tutor a tap away.

3

Watch it stick

Ace schedules each review for the perfect moment and shows your progress as it grows.

Ready to actually remember what you study?

Five focused minutes today beats an hour of re-reading the night before. Let's make it stick.

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