Does tonight's work with you. Makes sure you remember it.
Upload your class — problem sets, slides, readings. LAND works through them with you, shows every step, and turns what you missed into review that comes back before the test.
LAND — your tutor. Talk to it.
50 seconds · one connected workflow · captions always on
What it does
Three things it does for tonight.
Tonight's work
It fills in the worksheet with you.
Hand it the problem set — PDF, Word doc, slides, or a photo of the page. LAND places an answer next to each question number, circles the multiple-choice letter, and highlights what it graded, showing its working as it goes. Every edit is staged on the page for you to look at; nothing is written to the file until you say so.
1. Define hydrostatic pressure.
Pressure a fluid exerts at rest, from the weight above it.
2. Which vessel has the largest total cross-sectional area?
C — capillaries
3. Cardiac output = ?
CO = HR × SV
The promise
It tells you when it doesn't know.
Every answer carries a badge saying where it came from. A confident-sounding guess is labelled a guess, and web claims come with links you can open and check yourself. That badge is the difference between studying from this and studying from a chat window.
Before the test
What you missed comes back.
Anything you got wrong turns into a card, scheduled by how well you actually recalled it — pushed further out when you know it, pulled closer when you don't. Put your exam date in and the whole plan compresses to fit the days you have left. You do not have to remember to review; that is the app's job.
And everything else it does with your material.
Edit your PDFs like a doc
Real text editing inside the PDF · 53 fonts, OCR for scanned pages, AI images generated in-place, merge files. No round-trip through another app.
LAND researches the web for you
Ask something your notes can't answer · LAND searches the web and comes back with citations you can verify, grounded in what you're studying.
Research Review across 200M+ papers
Search scholarly indexes without spending a model turn, inspect abstracts and open-access links, then choose the exact papers Writing Studio may cite.
Handwriting and spatial notes
Write with a live stroke stabilizer, highlight and erase in 2D, then place ink on XY, XZ, or YZ planes and plot labeled points in 3D · inside the same note as your text, tables, and files.
LAND · your AI study sidekick
Tap the rainbow sphere or click the mic. LAND listens, auto-sends after you pause, reads the note you're on, sees attached images/docs/audio transcripts, and can move from Camera into deeper help.
Notes that sort themselves
Drop PDFs, Word docs, slides, spreadsheets, lecture recordings, photos, or just type. Every chunk lands in the right subject and topic automatically · no folder management.
Syllabus to calendar
Upload a schedule screenshot, syllabus PDF/DOCX/PPTX/XLSX, or .ics file. LanderOS extracts recurring classes, imports them into Calendar, and lets LAND plan study blocks around them.
A tutor that remembers everything
Socratic AI that keeps your full history per subject. Every claim has a source chip · click it, jump to the exact note it cited.
Practice exams that adapt
Never repeats a question you've seen. Weights toward concepts you missed last round. Free-response answers get AI-graded with partial credit.
Flashcards from your guide
Every Q&A pair from your source becomes a card, prioritized over AI-extracted ones. FSRS-scheduled · flip to reveal · click through your whole deck.
Coverage-verified audio
Generate a 30–90 minute walkthrough of every question. A coverage badge confirms `152 of 152 covered`. Downloadable MP3 · drive to the exam with it playing.
Every note as a wireframe planet
Your whole vault as a force-directed concept map. Tiny color-cycling spheres, dotted lines where notes share rare vocabulary, drag to push them around. Click a sphere to open the note · zoom into a folder to fly there. `[[wikilinks]]` for explicit references.
OS readiness, not guesswork
Progress checks notes, files, sorting, calendar pressure, Camera captures, concept-map coverage, focus rhythm, and settings so students know exactly what to fix next.
One source, one system
Your tutor knows what your exam covers. Your exam knows what you struggled with. Your podcast covers every question. Same notes, one workflow.
The four surfaces
Four surfaces. One source of truth.
Every surface reads the same notes. Improve one and the others improve with it.
Tutor · Cardiac Physiology
Walk me through what triggers an action potential.
Funny channels open at hyperpolarized voltages · Na+ trickles in until threshold · pacemaker fires.
Exam · 14 / 30
Sympathetic activation acts on which receptors for HR?
Cards · 3 / 47
front
Role of aldosterone in volume control?
back
Na+ reabsorption in collecting duct · raises BP.
Podcast · ready
48 min
spoken walkthrough
Honest comparison
We don't want to beat ChatGPT at chatting. We want to beat everyone at studying.
ChatGPT is great for general questions. Quizlet has flashcards. Anki has scheduling. Notion has notes. LanderOS is the only one that connects all four into one workflow built for exams.
Why this exists
I'm a student. Three days before a hard physiology exam I had 14 lectures of slides, a 200-page guide, and ChatGPT open in 8 tabs. I was copy-pasting chunks, re-explaining context every session, building flashcards by hand, and never knowing what I actually had down vs what I was about to bomb. The AI tools were brilliant in pieces but nothing connected them. So I built the thing I wished existed. Every feature here comes from a moment of frustration I lived through · the Cram Planner exists because I couldn't tell what to study tonight. Mistake Patterns exists because I kept failing the same kind of question without noticing. Coverage-verified audio exists because I wanted to study while driving. If you've felt any of these · this app is for you. And if it doesn't help, email me · I read everything.
Pricing
Less than a textbook chapter.
The Free workspace does not expire and needs no card. Upgrade for more hosted AI; cancel anytime and export your notes in one click.
Free
The local workspace, forever. A small monthly LAND allowance is included.
- Unlimited local notes, calendar, tasks, and exports
- Latest cloud snapshot sync across devices (2 MB workspace cap)
- 20 shared hosted-AI credits / month · up to 5 / day
- Common text actions use 1 credit; heavier actions use more
- Manual flashcards and study mode
- On-device dictation and read-aloud when the browser supports them
- No card and no expiring trial
Starter
For one-class workflow with light hosted AI and occasional exams.
or $89/yr · save 25%
- **LAND helper** · 20-turn daily guard · 300 shared hosted-AI credits / month
- Up to 5 tutor turns / day · 60 / month
- 3 document imports / month · PDF, Word, slides, Excel
- Cloud sync + recovery history across devices
- 300 shared hosted-AI credits / month across AI tools
- Schedule screenshots + syllabus import to Calendar
- 10 practice exams / month
- Unlimited typed · pasted · dictated notes
- AI sort with auto-topics
- Concept map · every note as a wireframe sphere, dotted connections
- Wikilinks · `[[note title]]` for explicit cross-references
- Cram Planner · Insights · Daily Check-In
- Glossary · spaced-repetition study mode
- Writing Studio · 250 source-indexed paper searches / month + verified web citations
- 2D + spatial handwriting canvas stored inside each note
Pro
For full-semester load. Multiple classes, regular exams, midterm crunches.
or $179/yr · save 25%
- **LAND helper** · 60-turn daily guard · 800 shared hosted-AI credits / month · 10 images
- LAND understands attached docs, images, audio, and video transcripts
- 20 tutor turns / day · 300 / month
- 10 document imports / month · PDF, Word, slides, Excel
- Syllabus/calendar extraction from documents and spreadsheets
- 25 practice exams / month
- **Tutor uses your knowledge graph** · pulls in related notes from across subjects
- **Local graph widget** inside every note · see what connects
- Knowledge Structure · hubs, orphans, cross-subject bridges
- Re-extract key terms · densify your concept map on demand
- Mistake Pattern Detector · Topic Mastery Heatmap
- Multi-device sync (laptop + phone)
- Anki TSV + Quizlet CSV + JSON full backup
- 10 hours of audio transcription / month
- Research Review · 1,000 paper searches / month across 200M+ indexed works
- Vector handwriting · live stabilizer + XY/XZ/YZ spatial plotting
Premium
Built for grad school, USMLE/MCAT/bar prep, and hard-science majors. If you're an undergrad with 1-2 classes, Pro is the right fit.
or $359/yr · save 25%
- **LAND helper** · 100-turn daily guard · 1,200 shared hosted-AI credits / month · 30 images
- **Claude Opus 5** on Tutor + LAND heavy reasoning turns
- Deeper mechanism explanations and tougher follow-up questions
- **Opus tutor reads your full graph** · cross-subject leakage at depth
- 30 premium tutor turns / day · 300 / month
- 60 document imports / month · 75 practice exams / month
- Unlimited key-term re-extraction · keep your graph dense forever
- High-volume OCR for whiteboards, scans, and problem sets
- 30 hours of audio transcription / month
- Research Review · 3,000 paper searches / month + spatial handwriting canvas
- Priority support
- Early access to new high-volume study workflows
Lifetime
Pay once · $249
Local-first core forever, plus 10,000 included hosted-AI credits. No subscription or recurring credit reset.
Roadmap
Built in public. Shipping every week.
LanderOS ships every week. Here's what's already live, what's coming next, and what's on the longer horizon.
Shipped
Cram Planner
Input your exam date · get a session-by-session plan with flashcards, tutor time, and practice quizzes blocked into your week.
Multi-device sync
Sign in and your notes sync across laptop and phone automatically · gzipped to your account, pulled on next login.
Anki TSV + JSON export
Your notes are yours. One click takes everything with you · imports directly into Anki, Quizlet, or any JSON consumer.
Drag-and-reschedule calendar
Drag events across your week view or resize them. LAND can auto-generate study blocks from your open topics.
Scanned-PDF + photo OCR
Photograph a whiteboard or upload a scanned PDF · OCR extracts the text so LAND, search, and flashcards can use it.
Syllabus document import
Upload a syllabus or class schedule as PDF, Word, slides, Excel, image, or .ics · recurring class blocks land on LanderOS Calendar.
LAND voice + Camera handoff
Talk to LAND, pause to send, and continue a Camera frame inside LAND with the image and recent Camera context attached.
Predicted score + topic mastery
Progress rolls up flashcards, mock attempts, weak topics, and mistake patterns into one exam-readiness view.
Source-indexed Research Review
Search 200M+ scholarly papers, inspect abstracts and citation signals, select the sources allowed into a draft, and keep real links attached through PDF export.
2D + spatial note canvas
Vector handwriting with live stabilization, highlighter and eraser tools, three drawing planes, and labeled x/y/z points stored inside the note.
Next
Google Drive direct import
OAuth-backed Google Docs, Slides, and Sheets import so shortcuts can pull private document content without exporting first.
Deeper plan automation
LAND will revise your study calendar when you miss sessions, move exams, or upload new material.
Richer PDF object editing
More direct manipulation for PDF images, detected fonts, and layout-aware edits without leaving the app.
Later
Collaborative study rooms
Shared rooms where a study group can review the same notes, flashcards, and schedule without mixing private workspaces.
Institution calendars
School-specific academic calendars and holiday detection so imported class schedules skip breaks automatically.
Cross-subject synthesis
`This topic from Cardio connects to the baroreceptor reflex from Neuro.`
Honest scope · this list updates as priorities shift.
FAQ
Real answers.
Why does LanderOS exist?▾
I'm a student. Three days before a hard physiology exam I had 14 lectures of slides, a 200-page guide, and ChatGPT open in 8 tabs. I was copy-pasting chunks, re-explaining context every session, building flashcards by hand, and never knowing what I actually had down vs what I was about to bomb. The AI tools were brilliant in pieces but nothing connected them. So I built the thing I wished existed. Every feature here comes from a moment of frustration I lived through · the Cram Planner exists because I couldn't tell what to study tonight. Mistake Patterns exists because I kept failing the same kind of question without noticing. Coverage-verified audio exists because I wanted to study while driving. If you've felt any of these · this app is for you. And if it doesn't help, email me · I read everything.
Is this just a wrapper around ChatGPT?▾
No · it's a study workflow built on Anthropic's Claude (with OpenAI Whisper for transcription + DALL-E for diagrams). The AI is the engine; the value is the system around it · auto-organized notes, FSRS flashcard scheduling, adaptive practice that remembers your weak spots, coverage-verified audio, and a tutor that pulls from your knowledge graph instead of starting fresh every conversation.
Why would I pay for this over ChatGPT Plus or Claude Pro?▾
Same price ($19.99/mo · matches both). The difference is what the AI knows about YOU. ChatGPT starts every conversation from zero · you re-paste context, re-explain what exam you're prepping for, re-upload the same PDF. LanderOS already has all of it loaded. LAND knows which note you're working on, your subject, your recent topics, your exam date. Your practice exam knows what you got wrong yesterday. Your cram plan factors in LanderOS Calendar. The integration IS the product · the AI is just the engine. If you only want generic chat, use ChatGPT. If you want a study system that learns YOUR material, this is it.
What's LAND?▾
LAND is the rainbow sphere in your typing bar. Tap it (or ⌘⇧L), click the mic, or hand it a Camera frame. It reads whatever note you have open, understands attached documents/images/audio transcripts, chats about them, proposes edits with a confirm-before-apply card, and can generate labeled diagrams via DALL-E 3. When your notes don't have the answer, it does real web research and replies with citations you can verify. Same model family ChatGPT and Cursor use · the difference is LAND already knows your notes, subject, calendar, and study context.
Where is my data stored?▾
In your browser's IndexedDB · local-first by default. Your notes never leave your machine except when you explicitly send a chunk to the AI for processing (those calls aren't stored on our servers). You can export everything to JSON anytime. Sync across devices is opt-in via your account.
What if I don't have a study guide PDF?▾
You don't need one. Dictate lecture notes, paste a textbook chapter, upload Word/PowerPoint/Excel, attach audio or video, photograph a whiteboard, or drop in your syllabus. The AI sorts whatever you give it.
What's free vs paid?▾
Free keeps the local workspace, notes, Calendar, tasks, exports, manual study tools, a latest cloud recovery snapshot, and a small monthly LAND allowance without a card. Starter is $9.99/mo for one-class AI usage, Pro is $19.99/mo for a full semester, and Premium is $39.99/mo for higher limits and deep-model access. Lifetime is $249 one-time for the permanent local core plus 10,000 included hosted-AI credits; those credits do not reset.
Will my notes carry over between devices?▾
Yes · sign in and your notes sync automatically across laptop and phone. The local-first model still applies (your browser is the primary store), but a gzipped blob of your workspace is pushed to our server on each change so your other device can pull it down.
Can I cancel anytime?▾
Yes. No annual lock-in on Starter or Pro. Lifetime is one-time, no recurring charge.