Active recall, done properly
Upload your notes and close them. Write down everything you remember. Blackout marks what stuck, what's shaky and what's gone — then makes you fix it.
$6.99/month or $29.99/year after. Cancel any time.
You remembered a lot — but four things didn't come back.
Three steps
Step 1
Lecture notes, a chapter, a slide deck. Blackout reads it and pulls out the ten to fifteen ideas you'll actually be tested on.
Step 2
One prompt, one page, notes closed. Stuck? Ask for a keyword, not the answer. Blackout counts how much help you needed.
Step 3
Every gap gets a short explanation — then it's hidden, and you say it back from memory. Reading it isn't enough.
Honest marking
A score tells you nothing you can act on. Blackout sorts every idea into what you knew cold, what you half-knew, what vanished — and anything you got confidently wrong.
Hints, not answers
Sit still for fifteen seconds and Blackout offers a keyword. Broad first, then specific, then the order things happen in. Never the answer — that would defeat the point.
Your blurt
Hint · broad triggers
The return
Not the whole chapter — only the parts that didn't hold. Five minutes, the things you actually got wrong. That's the difference between reading something and knowing it.
Welcome back.
2 things need your attention.
Recognising a page you've read four times is not the same as being able to produce it in an exam hall. Testing yourself is the single most reliable way to find the difference — and it's uncomfortable, which is exactly why almost nobody does it. Blackout makes it take ten minutes.
Pricing
Three days free to try it properly. Cancel before day three and you're charged nothing.
$29.99/year
Works out at $2.50 a month
Card required. We'll remind you the day before it ends.
You close your notes and write down everything you can remember, from nothing. It's the most effective way to study that exists, and the least pleasant, because it shows you immediately how little stuck. Blackout handles the uncomfortable part: telling you exactly what you left out.
Flashcards test one fact at a time and let you say “yeah, I knew that” without proving it. Blurting makes you produce the whole picture from memory, in your own words — which is what an exam asks for. No cards to make, either.
Lecture notes, a textbook chapter, slides, or text you paste in. One chapter at a time works better than a whole module — the tighter the material, the sharper the gaps.
Three days free, then it's $6.99 a month or $29.99 a year. There's no permanent free tier, because a free version of this would be useless — the whole point is that it keeps testing you next week and the week after.
You're charged for the plan you picked, and we email you the day before so it's never a surprise. Cancel before then and you pay nothing. Full refund within 7 days of any charge, no reason needed.
Takes two minutes to set up your first chapter.