Study sessions that listen to how you reason. A tutor that remembers what you got wrong, what you almost got right, and what you've never seen yet. Gets sharper with every session.
Every misconception we catch reshapes what the tutor asks you next — and keeps coming back, in different forms, until it stops being a misconception.
Quick quizzes, multiple choice, scan decks — built around the way you already study. The tutor only opens up the conversation when something in your answer suggests a real misconception worth digging into.
Then you explain in your own words, and we catch the broken step. Built to fit anywhere you'd already be doing flashcards — and if you've already got a deck, you can drop it in once and the tutor picks up from there.
Conversation is the exception, not the default.
Keep your question banks, your decks, your videos — they're great at what they do. lacunos does the one thing none of them can: hear how you reason, where it breaks, and what that means for what you'll miss on exam day. That listening role has always belonged to a 1:1 tutor — expensive, scarce, mostly out of reach. We make it available on your schedule, alongside everything you already use.
A layer, not a swap.
The tutor reads how close your exam is and shifts posture. Twelve weeks out it builds breadth methodically; a week out it refuses new ground and drills only what's still weak.
Not a label — it changes what the tutor offers, what it declines, and how it drills you.
Explore freely. No urgency to constrain choices.
Tackle weak systems methodically. Map → deepen is the core loop.
Drill weak topics across systems. New ground is deferred.
No new ground. Scan + spot-deepen on what's still weak.
When the tutor catches a misconception, it doesn't just get filed away. It reshapes what we ask you next — and comes back, on its own schedule, from different angles, until it's solid. That's the loop the tutor's actually running on you in the background.
The bar chart, the gaps list, the map, the Anki export below — none of them are the loop. They're just four ways of looking at it from the outside.
The canonical areas of your exam, with subtopic-level state shown as shape rather than a single score. A guide, not a checklist — built for agency over an overwhelming domain.
If you imported a deck, it shows up here too — what you've already been studying, alongside what we've caught in session.
“Your Anki has been flagging eye anatomy and visual pathways pretty heavily lately, so we'll hit those directly.”
That sentence is from a real opening. Sync your AnKing, Lightyear, or Zanki deck once and the tutor reads it as backdrop — what you've been seeing, what you've been rehearsing, where your lapses are concentrated. The loop above runs the same; this just skips its cold start.
Every catch the loop produces becomes a card in your lacunos deck — visible alongside your Gaps, exportable as a standard .apkg whenever you want a fresh snapshot.
Re-imports merge into your Anki cleanly: cards keep their identity, so your deck updates in place instead of doubling. The tutor keeps re-surfacing the misconception in session; the card keeps it in your daily reviews. One file in, one file out — your work compounds in both places at once.
Standard .apkg in and out — works with the deck you already run.
Already running a deck? Get a free Step 1 coverage report →
One-time payment, no subscription. Re-buy when you need more — your memory and progress carry across passes.
Start free first — find a misconception or two before you commit.
Test it
A week with the tutor — long enough to know if it fits your prep.
Get going
A focused month. The right shape for a Step 1 prep arc.
Commit
Built for a longer Step 1 runway.
Not sure yet? Start free — no credit card. Pick a pass when you're ready to keep going.
If something's missing here, the answer is probably just ask us.
No. lacunos is the listening layer alongside them. Use your question banks, your decks, your videos — and bring the reasoning errors here, where they can actually be heard and worked through.
Almost none. Tapping by default — multiple choice, swipe decks, quick quizzes. Explaining in your own words only happens when something in an answer suggests a real misconception worth digging into.
They become cards in your lacunos deck — viewable on your Gaps page and exportable as a standard .apkg whenever you want to refresh your Anki. Re-imports merge cleanly: cards keep their identity, so your deck updates in place instead of duplicating. The session ends; the work compounds.
Your sessions are private to you. We use what you write to build your personal model — not to train shared ones. You can export your card history at any time, and delete your account in one tap.