Best AI Flashcard Apps (2026): Notes, Photos and PDFs to Cards

Every AI flashcard app can now turn your notes into cards. Paste a page of text, upload a PDF or photograph a worksheet, and you'll get a deck in under a minute from almost any of them. In 2026 the useful questions come after that: can you check and fix the cards before you study them, and does the app bring each card back at the right time so you still know it in a month?

This guide ranks the best AI flashcard apps on those questions. We looked at what each one accepts (photos, PDFs, pasted notes, voice, YouTube), what control you get over the cards it writes, whether it schedules reviews with spaced repetition, and how much AI you get before you pay. ChatGPT, Gemini Notebook (the new name for NotebookLM) and Gemini get their own section, because they're excellent at generating cards and don't schedule them at all.

Prices and limits below come from each vendor's own pricing page and US App Store listing, checked on 24 October 2026. AI allowances change often, so check before you pay.

The Short Version

The best AI flashcard app depends on where your material lives:

• Knowt takes the widest range of inputs on a free plan: PDFs, slides, videos, YouTube links, audio and pasted notes, on web, iPhone and Android. It doesn't publish its free AI limits, and the free plan shows ads.
• Sticky is the fastest way to turn paper notes into a scheduled deck on iPhone. Photograph a page, paste text or dictate, and the cards are reviewed with SM-2. Maths notation renders as proper LaTeX. The free plan is trial-sized (3 decks of 30 cards, 5 AI generations a month); Sticky Pro is $39.99 a year. iPhone and iPad only.
• RemNote is the best fit for PDFs you annotate, with SM-2 or FSRS scheduling and 250 free AI credits a month.
• Quizlet can now turn a recorded lecture into flashcards, and it has the largest library of ready-made sets, but its Learn mode isn't long-term spaced repetition.
• Gizmo, Brainscape and Mochi suit narrower needs: game-style quizzes, expert-certified decks, and Markdown cards with a small AI allowance.
• ChatGPT, Gemini Notebook and Gemini generate good cards from your own sources for free, but none of them schedules reviews. Use them to draft, then study in an app that does.

If you only remember one rule: the app that makes the cards should also be the app that schedules them, or you'll end up with a folder of decks you never review.

What Makes a Good AI Flashcard App in 2026

Generation quality has converged. Most apps now write clear, single-fact cards from clean notes, and all of them struggle with messy ones. These four criteria separate them:

• Inputs that match your material. Handwritten notes need a camera. Lecture slides need PDF or PowerPoint upload. Recorded lectures need audio. An app that can't read your source makes you retype it, which defeats the point.
• Control over the cards. AI cards are a first draft. You want to edit or delete cards before they enter your reviews, and ideally to steer how many cards you get and what kind (question and answer, multiple choice, typed answer). The principles in our guide to making effective flashcards apply to AI cards too.
• Real scheduling afterwards. This is the criterion most AI tools skip. An app that schedules each card against the forgetting curve keeps material for months; one that only lets you flip through a deck is a cramming tool.
• A free allowance you can judge. AI costs vendors money per card, so every app caps it somewhere. A published cap is easier to plan around than an unpublished one.

1. Knowt

Platforms: iPhone, iPad, Android, web Free tier: AI flashcards from notes and files, Learn mode, spaced repetition, with ads (AI limits not published) Paid: Knowt Ultra at $24.99/month or $149.99/year ($12.99/month billed annually) on Knowt's site; the iOS app lists several Ultra prices

Knowt has the broadest inputs of any dedicated flashcard app. Its AI flashcard maker accepts PDFs, PowerPoints, images, videos and audio, plus pasted notes, and it pulls files from your device, Google Drive or a YouTube link. A separate lecture note taker records a class and builds cards from it. You can upload up to 30 files at once.

Cards are fully editable after generation: rewrite a question, add an image, or delete what you don't need. From there Knowt offers flashcards, a Learn mode, practice tests and a spaced repetition mode. It can also import Quizlet sets, which is why it grew as the free Quizlet alternative. Our Knowt vs Quizlet comparison sets out how the two free plans differ. The iPhone app has 4.7 stars from around 11,000 US ratings.

The weak spots are transparency. Knowt doesn't publish how much free AI you get, and its spaced repetition doesn't show or let you adjust how cards are scheduled. Ultra adds AI summaries of PDFs, videos and lecture recordings, a voice tutor and an ad-free experience.

Best for: Students with typed notes, slides and recorded lectures who want one free app on every device. See our Sticky vs Knowt comparison.

Limitations: Ads on the free plan. Unpublished AI limits. Black-box scheduling. Ultra at $149.99 a year is one of the most expensive plans here.

2. Sticky

Platforms: iPhone and iPad Free tier: 3 decks of up to 30 cards, 5 AI generations a month (1 from the camera) Paid: Sticky Pro at $5.99/month or $39.99/year

Sticky is built around one job: turning your own material into a scheduled deck without typing it. Point the camera at a page of handwritten notes, a textbook spread or a worksheet, paste text, or dictate with your voice, and the AI writes question-and-answer cards. Every card is editable before you study it, so you can fix wording or delete cards that miss the point. Our walkthrough of how Sticky turns a photo into flashcards shows the steps.

What happens next is the part most AI tools skip. Sticky schedules every card with SM-2: you grade each one Hard, Okay or Easy, each grade shows when you'll see the card again, and all your decks feed one daily review. You can also study in Type mode, which checks an answer you type from memory, or take a generated multiple-choice quiz. Maths and science notation renders as real LaTeX, which matters if your notes are full of equations (see our guide to LaTeX flashcards for maths).

The free plan lets you try the whole loop, but it's small: 3 decks of up to 30 cards and 5 AI generations a month, one of them from a photo. Regular use needs Sticky Pro, which removes those limits.

Best for: iPhone users whose notes are on paper or in their head, STEM students who need equations to render, and anyone who wants generation and scheduling in one place without learning Anki.

Limitations: iPhone and iPad only, with no web, Mac or Android app. No PDF or slide upload, so you photograph the page or paste the text. A trial-sized free plan. No shared deck library, and Sticky doesn't import decks from other apps.

3. RemNote

Platforms: Web, Mac, Windows, Linux, iPhone, iPad, Android Free tier: Unlimited notes and cards, 250 AI credits a month, 3 annotated PDFs Paid: Pro at $8/month or Pro with AI at $18/month, both billed yearly on RemNote's site; the iOS app charges more (Pro $14.99/month)

RemNote is a note-taking app with flashcards built in, and it's the strongest answer here for PDFs. You import a PDF, highlight and annotate it, and turn the highlights into cards that link back to the page. AI can also generate cards and quizzes from text, PDFs and PowerPoints. Its scheduling is serious: SM-2 by default, with FSRS available as an option.

The free plan includes 250 AI credits a month, and RemNote says each AI card or quiz run costs about 2 credits. The catch is the free PDF limit: only 3 annotated documents, which a single course can use up. Pro removes the PDF cap, and the full "Learn PDF" AI tools need the Pro with AI plan ($216 a year).

Best for: University students who read long PDFs and want notes, highlights and flashcards in one place. See our Sticky vs RemNote comparison.

Limitations: A real learning curve, because you're adopting a note-taking system, not just a flashcard app. Only 3 annotated PDFs free. In-app iOS prices are much higher than the web, so buy on the website.

4. Quizlet

Platforms: iPhone, iPad, Android, web Free tier: Create and study sets, community sets, basic study modes, with ads Paid: Quizlet Plus at $9.99/month or $44.99/year in the iOS app (from $35.99/year on the web)

Quizlet's AI now covers two inputs well. You can type, paste or upload notes to build a study set, and you can record or upload a lecture and Quizlet turns it into a study guide and flashcards. Quizlet also bought Coconote, an AI lecture note taker, in early 2026, and Coconote is still available as a separate app. Quizlet also has the biggest library of ready-made sets of any app here, with 4.8 stars from over 1.1 million US ratings.

The gap is what happens after generation. Quizlet's Learn mode adapts within a session, pushing missed cards forward, but it doesn't space each card across weeks the way SM-2 or FSRS does. We couldn't confirm Quizlet's free AI limits (its website blocked our checks), so assume the stronger AI tools need Plus.

Best for: Students who record lectures, want a ready-made set for their course, or have a test within days. See our Sticky vs Quizlet comparison.

Limitations: No long-term spaced repetition. Ads on the free tier. Free AI caps aren't published. Plus costs more in the iOS app than on the web.

5. Gizmo

Platforms: iPhone, iPad, Android, web Free tier: Free flashcards and quizzes, limited by a lives system and capped AI use (exact caps not published) Paid: Gizmo Unlimited, with US App Store plans from $6.99 to $154.99 depending on length

Gizmo turns almost anything into flashcard quizzes: PDFs, YouTube videos, PowerPoints, typed notes and photos of handwritten notes, and it imports Quizlet and Anki decks. It lists spaced repetition among its core features and wraps study in game mechanics, with lives that you lose on wrong answers, streaks and group quiz games. An AI tutor explains questions you get wrong. The iPhone app has 4.8 stars from around 14,500 US ratings.

Gizmo's own site and App Store listing don't state the free limits. Coverage and user reviews describe a set number of lives and a daily cap on AI generation, so treat the free plan as a trial for heavy use.

Best for: Students who study more when it feels like a game, and those whose material is spread across YouTube, slides and PDFs. See our Sticky vs Gizmo comparison.

Limitations: Free limits aren't published. Lives can stop a session mid-revision. Unlimited is expensive on short plans.

6. Brainscape

Platforms: iPhone, iPad, Android, web Free tier: Unlimited cards you make, limited AI generation ("hundreds" of cards), up to 2,500 cards of pre-made content Paid: Brainscape Pro at $7.99/month billed yearly ($95.88) on the web; $19.99/month or $95.99/year in the iOS app

Brainscape's AI flashcard maker builds cards from notes, PDFs, images, documents or typed text. Its free plan allows what Brainscape calls "hundreds" of AI flashcards, and Pro makes AI generation unlimited. Reviews use confidence-based repetition: you rate each card from 1 to 5 and low-rated cards come back sooner, with nothing to configure.

The bigger draw is Brainscape's certified library of expert-written decks for exams like nursing boards and the bar. The app has 4.8 stars from around 21,500 US ratings.

Best for: Professional exam prep where Brainscape has certified decks, with AI for filling the gaps from your own notes. See our Sticky vs Brainscape comparison.

Limitations: The free AI allowance isn't a hard number. Images on cards need Pro. Pro is expensive monthly through the App Store.

7. Mochi

Platforms: Mac, Windows, Linux, web, iPhone Free tier: Unlimited cards and decks, offline use, 5,000 AI tokens a month (no sync between devices) Paid: Mochi Pro at $5/month, with 500,000 AI tokens a month and sync

Mochi is a Markdown flashcard app with spaced repetition, aimed at people who like writing their own cards. Its AI assistant writes and rewrites cards from text you give it, and Pro raises the monthly allowances for AI, audio transcription, dictionary lookups and text to speech. The free AI allowance of 5,000 tokens is small; Pro's is 100 times larger. Mochi's pricing page doesn't mention PDF or photo input.

Best for: Students who write notes in Markdown and want light AI help drafting cards, with clean spaced repetition. Its iPhone app is new, with around 175 US ratings.

Limitations: Small free AI allowance. No sync on the free plan. No PDF or photo-to-card generation listed.

Comparison Table

Can ChatGPT, NotebookLM (Gemini Notebook) or Gemini Make Flashcards?

Yes, all three make good flashcards, free, from your own sources. None of them schedules reviews, so they're best used to draft cards that you then study in an app that does.

That distinction is the reason this list exists. Making cards is only useful if you see each card again just before you'd forget it, and that's the job of a spaced repetition schedule. A deck you flip through once and mark right or wrong works for tomorrow's quiz, not for a final in six weeks.

ChatGPT

ChatGPT can turn a topic or uploaded notes into interactive flashcards inside a conversation. You flip each card, mark it with a tick or a cross, and shuffle the deck; decks are saved to your library, and you change cards by asking ChatGPT to add or rewrite them. OpenAI's help article reminds you to check cards against your notes, because it can make mistakes. OpenAI's release notes say the feature is on every plan, including free, as of October 2026; the help article describes no export button and no review schedule. Our guide to ChatGPT flashcards covers how to get a deck out of ChatGPT and into a scheduling app.

Gemini Notebook (formerly NotebookLM)

Google renamed NotebookLM to Gemini Notebook in July 2026; it works the same way. Add your sources (PDFs, docs, slides, websites), then generate flashcards from the Studio panel. You can pick easy, medium or hard difficulty, choose fewer, standard or more cards, and write a prompt to set the focus. You mark each card "Got it" or "Missed it", progress is saved, and you can retake only the cards you missed. You can also download the cards as a CSV file, which makes Gemini Notebook the easiest of the three to move into a scheduling app. Google's help page doesn't describe spaced repetition. Our guide to NotebookLM flashcards walks through the CSV export and the Anki import step by step.

Gemini

In the Gemini app on a computer, you can ask Gemini to "create flashcards about" a topic, optionally attaching your own files. The cards open in a side panel with hints, shuffle and text to speech, and you can share them by link. Google's help page doesn't mention progress tracking, scheduling or export.

How to use them with a flashcard app

Gemini Notebook's CSV goes straight into Anki, which imports CSV and text files. For apps that don't import CSV, Sticky included, the simpler route is to paste your source notes into the app's own generator, so the cards are scheduled from the start. Either way, keep the AI tool for what it's good at (reading a 60-page PDF and drafting questions) and let the flashcard app handle when you see them.

How to Choose an AI Flashcard App

Four questions settle it for most students.

What does your material look like?

Handwritten notes and textbook pages need a camera: Sticky, Knowt or Gizmo. PDFs and lecture slides need upload: Knowt, RemNote, Gizmo or Brainscape. Recorded lectures need audio: Quizlet or Knowt. If it's all over the place, Knowt and Gizmo take the most formats.

Do you need the app to schedule reviews?

If the exam is this week, any tool works, including ChatGPT. If you need the material for a cumulative final, a language or a professional exam, choose an app with per-card scheduling: Sticky, RemNote, Knowt, Brainscape, Gizmo or Mochi. Our guide to how spaced repetition works explains why the gap between the two widens every week.

Which devices do you study on?

Sticky is iPhone and iPad only, which costs nothing if that's where you study and rules it out if you also use Android or a laptop. Knowt, Quizlet, Gizmo and Brainscape cover web, iOS and Android; RemNote also runs on desktop.

How many cards will you generate a month?

For a deck or two a month, free plans cover it, and ChatGPT or Gemini Notebook cost nothing for drafting. For a full course load, you'll hit the cap on every app here. Sticky Pro ($39.99 a year) and Mochi Pro ($5 a month) are the cheapest paid plans; RemNote Pro ($96) and Brainscape Pro ($95.88) are mid-range; Knowt Ultra and Gizmo Unlimited cost the most.

The Honest Recommendation

There's no single best AI flashcard app. Here's who should use what:

• You want the most inputs on a free plan, on any device: Knowt.
• Your notes are on paper and you study on iPhone: Sticky. Photograph a page, edit the cards, and they're scheduled from day one. Try the free plan; regular use needs Pro.
• You read and annotate PDFs: RemNote.
• You record lectures or want a ready-made set: Quizlet.
• You need gamification to keep going: Gizmo.
• You're preparing for a certification: Brainscape.
• You only need a quick draft from your sources: ChatGPT, Gemini or Gemini Notebook, then move the cards somewhere that schedules them.

Whichever app you pick, read the cards it writes before you study them. AI is good at pulling facts out of clean notes and poor at knowing which facts your exam cares about, and a few minutes of editing is what turns a generated deck into a useful one. Then review on schedule: retrieval practice only pays off when you come back to each card.

To see what well-made cards look like, browse ready-made decks like AP Biology flashcards and organic chemistry flashcards. For the wider field beyond AI, see our roundup of the best free flashcard apps for students, our guide to the best flashcard apps for iPhone, our picks of the best flashcard apps for college students, or browse everything in the Learn hub.