Now on iOS
Turn any PDF into bite-sized study cards.
Skim reads your lectures, papers, and textbooks and breaks them into one-idea cards. Swipe through. Tap any term to ask the AI tutor. Quizzes prove what stuck.
How it works
From dense reading to a deck of cards in seconds.
Upload anything
PDFs, lecture slides, research papers, Word docs, even Markdown. One upload — Skim reads the whole thing.
Get one-idea cards
Skim breaks the document into bite-sized study scenes. One concept per card. Swipe through at your pace.
Ask Skim anything
Stuck on a term? Tap it for an instant explanation. Need more? Ask Skim a follow-up question — your built-in tutor.
Features
Built for students who want to understand, not memorize.
Three study modes
Deep understanding, explain like I'm 5, or quick-reference cheat sheet — pick how Skim explains the material to you.
Quizzes that prove it stuck
Every doc gets multiple-choice questions tied to its scenes. Quick checks, not busywork.
AI tutor on tap
Tap any key term for an instant explanation. Ask Skim a follow-up question grounded in the scene you're reading.
Streaks + reminders
Daily streak tracking and gentle nudges before exam dates. No spam, no guilt-tripping.
Multi-format upload
PDFs, slide decks, Word docs, plain text, Markdown. If you can read it, Skim can study it.
Private by default
Documents stay yours. No tracking, no ads, no selling your data. Delete your account and everything is gone in seconds.
Pricing
Free forever. Upgrade when you need more.
Free
Try Skim with a casual study load.
- 100K characters / month
- All study modes
- Quizzes + streaks
- Multi-format uploads
Pro
For serious semesters.
or $69.99/yr (~$5.83/mo, 2 months free)
- 2M characters / month (~670 pages)
- 140 AI tutor questions / month
- All study modes + quizzes
- Smart reminders + spaced review
- 7-day free trial on annual
Ultra
For grad students and power users.
or $139.99/yr (~$11.67/mo, 2 months free)
- 4M characters / month (~1,330 pages)
- 280 AI tutor questions / month
- Priority processing
- First access to new AI features
- 7-day free trial on annual
Subscriptions auto-renew. Cancel anytime in iOS Settings → Subscriptions.
Ready to study smarter?
Skim is free to try. Upload one document and see what your study cards look like in under 30 seconds.