Bring your own material
A lecture PDF, a page of notes, a textbook chapter. Crest reads it on your iPhone and pulls out the concepts worth practising. You approve every one before it enters your plan.
Know exactly how ready you are.
Crest turns the notes you already have into a short daily session — and one honest number for the day of your exam.
Coming to the App Store
See how it works
For iPhone. Free to use for one exam, with no account and no sign-up.
The problem
Studying isn't the hard part. Knowing whether it's enough is.
You can read a chapter four times and still have no idea what you'd score tomorrow. Highlighting feels like progress. Re-reading feels like progress. Neither one tells you anything about the day that actually counts.
Crest answers the only question worth asking before an exam: given what you know right now and the time you have left, are you on track?
How it works
Three steps, then six minutes a day.
Crest builds the schedule
A spaced-repetition model works out when you're about to forget each concept and shows it to you just before that happens. You don't decide what to study. You just study.
Watch one number
The ring is what you'd remember on exam day, not what you've covered. Anything you haven't studied counts as zero — which is harsh, and which is the only way the number stays worth trusting.
Before the day
Rehearse the exam, not just the cards.
The mock exam asks about the concepts least likely to survive until your exam date — not the ones due today. One attempt each, the way the real thing works, scored against your readiness figure.
If the score and the ring agree, the number is describing you accurately. If they don't, you have found that out with weeks to spare instead of on the morning. No flashcard app can do this, because none of them knows when your exam is.
There is a sprint mode too — the same material against a clock, for the days when the routine feels dull. Both grade recall exactly the way the daily session does, so neither one flatters the number.
What it isn't
Crest won't do your work for you.
It doesn't answer homework, and it doesn't invent study material out of thin air. It restructures what you bring into questions worth answering, and it never adds a fact your material didn't contain. That constraint is deliberate: a study tool that quietly makes things up is worse than no study tool, because you find out on the day of the exam.
It also won't promise you a grade. Nothing can. What it can do is stop you finding out too late.
Privacy
No account. Nothing to identify you.
Crest has no sign-up, no profile and no identifier that follows you. Your progress, your exam dates and your schedule never leave your phone.
Turning a document into questions needs a language model, so the text of what you import is sent to be read — nothing else, and nothing that identifies you. Who reads it, where, and what they may keep is set out in full in the privacy policy, and it is worth two minutes. Notes you type as "term: definition" never leave the phone at all. There is no analytics, no tracking and no third-party code in the app, and your work is backed up to your own private iCloud, storage only you control and that we have no way to read. Read the privacy policy.
Pricing
The daily habit is free. Always.
Sessions, the schedule, the readiness ring, streaks, progress history and reminders don't cost anything and never will. Premium is for scale: every exam you're sitting, and unlimited reading of your material.
Free
$0
no account, no card
- One exam, with its own schedule and readiness
- The full daily session, forever
- Streaks, progress history and reminders
- Three documents turned into questions
- Everything you add stays yours, forever
Best value
$59.99
per year — about $5 a month · 7 days free
- Every exam you're sitting, at once
- Unlimited reading of PDFs and notes
- Everything in the free plan
- Cancel any time from Settings
Also available monthly at $9.99.
Prices are in US dollars and shown in your local currency at purchase. Subscriptions renew until cancelled.
Crest isn't out yet.
It's built and in testing. If you have an exam coming and want to know when it lands, say so — one email, when it ships, and nothing else.