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Compare study apps

Mnema vs Anki, Quizlet, RemNote and NotebookLM

Five good ways to study with AI and flashcards, built for different students. Mnema is the one that tells you how far to trust each AI card before you keep it. Here is what each app does, where each one is better, and which one fits you.

Written by Yevhen Maltsev, who builds Mnema. Every Anki, Quizlet, RemNote and NotebookLM fact was checked on that app's own pages on 1 October 2026 and links there; a link read on another day says when.

  • Mnema

    AI cards that say how far to trust them

    Pick Mnema if making the cards is what stops you and you want to know how far to trust each one before you keep it. It writes them from your lectures, slides and PDFs, and on Plus and Pro from photos or a web search; it checks each against its source, lets you approve them and brings the source back in study. Web only and invite-only for now.

  • Anki

    The free, open source classic

    Pick Anki if you want free, offline and endlessly customisable, you are happy making cards yourself, and you want FSRS fitted to your own reviews.

  • Quizlet

    The big library and class favourite

    Pick Quizlet if you want ready-made sets from a huge library, quick study games, class tools and polished phone apps.

  • RemNote

    Notes and flashcards in one

    Pick RemNote if you take your notes in the same app you study in, learn from YouTube videos, and want apps that work offline.

  • NotebookLM

    Now Gemini Notebook: understand a pile of sources

    Pick NotebookLM, now Gemini Notebook, if you mostly want to ask questions across a pile of sources, get summaries and audio or video overviews, and make a quick set of flashcards for today.

Where Mnema is different

Cards you can check before you learn them. The table below shows where the others do more.

  • It tells you how far to trust each AI card: from your source, source plus AI (and what the AI added), or general knowledge.
  • A second check reads every card against its passage. Cards the source does not support are dropped or labelled general knowledge.
  • No notes? On Plus and Pro, Mnema searches the web, keeps the pages it judges reliable and cites the page each card came from.
  • It asks what you need first, then shows every card with its passage for you to approve before anything is saved.
  • Change a whole draft by chatting: “make the backs shorter” rewrites the cards waiting for review.
  • The source comes back in study: flip a card to read its passage, open your PDF, slides or Word file at the card's sentence, highlighted, or play your lecture from that moment.
  • Diagrams: on Plus and Pro it hides a picture's labels for you and quizzes you on them one at a time.

Side by side

Checked 1 October 2026; a link read on another day says when. Prices as shown on each app's own site.

FeatureMnemaAnkiQuizletRemNoteNotebookLM
Price
Free during invite-only early access: nothing is on sale yet. Planned: a Free plan with 200 AI credits every 30 days; Plus $9.99 a month or $79.99 a year; Pro $19.99 a month or $149.99 a year. Web search, photos of notes and automatic diagram labels come with Plus and Pro.
Free on desktop, Android and AnkiWeb. The iPhone app is $24.99 once.Source: App Store (US)
Free tier. Quizlet Plus from $35.99 a year or $7.99 a month, Plus Unlimited $44.99 a year or $9.99 a month (US prices read 29 September 2026; each country sees its own). Plus caps Learn at 20 rounds and practice tests at 3 a month.Source: quizlet.com/upgrade
Free tier with 250 AI credits a month. Pro $8 a month billed yearly ($96 a year) with 1,000 credits; Pro with AI $18 a month billed yearly ($216 a year) with 20,000 credits.Source: remnote.com/pricing
Free with a Google account. Since 2 September 2026 the free limit is compute based: it refreshes every 5 hours up to a weekly limit. Google AI Plus ($4.99 a month) doubles it, AI Pro ($19.99 a month) quadruples it, and Ultra starts at $99.99 a month.Source: Gemini Notebook Help (usage limits)Source: Google AI plans (US)
Sign up today
PartlyInvite-only early access for now: request access, and an invitation lets you sign up.
YesOpen to everyone.Source: apps.ankiweb.net
YesOpen to everyone.Source: Quizlet Help
YesOpen to everyone.Source: remnote.com
YesOpen to everyone with a Google account above the age of consent; some features are for over 18s only.Source: Gemini Notebook Help
How far to trust an AI card
YesEach card is labelled “From source”, “Source + AI” (naming what the AI added, such as an example) or “General knowledge”.
Does not apply: no built-in AI.
NoA label for how much of a card comes from your upload is not described.Source: Quizlet Help
NoA label that separates your source from what the AI added or general knowledge is not described.Source: RemNote Help
NoA label like this is not described in Google's flashcards help.Source: Gemini Notebook Help (flashcards and quizzes)
Checks each card against its source
YesA second AI pass reads each card against its passage; cards the source does not support are dropped or labelled general knowledge, and a high-stakes fact needs a top-tier source or a second one. Each card shows the result, such as “Checked against the source” or “Not double-checked yet”.
Does not apply: no built-in AI.
NoA separate check of each card against your upload is not described.Source: Quizlet Help (Smart Assist)
NoA separate check of each card against its source is not described.Source: RemNote Help
NoA separate check of each card against its source is not described.Source: Gemini Notebook Help (flashcards and quizzes)
Searches the web for you
YesOn Plus and Pro: give it a topic and it searches the open web, keeps the pages it judges reliable and cites the page each card came from.
Does not apply: no built-in AI.
NoSmart Assist can start from a topic; searching the web is not described.Source: Quizlet Help (Smart Assist)
NoYou paste a web page link and it makes cards from that page; its AI Tutor searches your own notes. Searching the web is not described.Source: RemNote (webpage to cards)Source: RemNote Help (AI Tutor)
YesFast Research adds web pages to a notebook from a query, and Deep Research browses up to hundreds of sites into a report; flashcards are then made from the notebook.Source: Gemini Notebook Help (sources)
Before it writes and before you save
YesAsks in the chat what it needs first (for a topic: what the cards are for, the focus and the card shape; for your file: which deck), then shows every card with its passage on one page to approve.
Does not apply: no built-in AI.
PartlySmart Assist makes draft cards you edit, delete or add to before publishing; asking about your goal first is not described.Source: Quizlet Help (Smart Assist)
PartlyA settings panel (detail, card types and format, language, your own instructions) instead of questions about your goal, then a preview where you untick the cards you do not want.Source: RemNote Help
PartlyYou pick how many, how hard and an optional prompt, and the set appears in the notebook; asking about your goal or approving each card first is not described.Source: Gemini Notebook Help (flashcards and quizzes)
Change a draft by chatting
YesType “make the backs shorter” or “add two cards on dosing” and the draft waiting for review changes; the review marks what changed.
Does not apply: no built-in AI.
NoNot described: drafts are edited by hand.Source: Quizlet Help (Smart Assist)
NoNot described: the AI Tutor can turn an answer into new cards, but generated cards are edited by hand.Source: RemNote HelpSource: RemNote Help (AI Tutor)
NoNot described: since September 2026 you can add or edit questions by hand.Source: Google blog, 15 September 2026
Where an AI card came from
YesBefore you save, every card made from your material or the web shows its trust label, the exact passage, and the file with its page, slide or rough time (“around 12:30”), or the web page. In study your PDF, slides or Word file opens inside Mnema at the card's page or slide, runs to its sentence and highlights it (a picture from a PDF is outlined); a web page opens at the passage in browsers that support it, and Mnema plays your recording from about that moment. Mnema keeps the file while its cards exist, if your storage has room; it turns slides and Word files into a PDF on its own server, for cards made from 3 October 2026 on.
Does not apply: no built-in AI.
PartlyStudy guides let you view your original upload; a per-card passage, page or timestamp is not described.Source: Quizlet Help
PartlyA PDF card's pin opens its exact sentence in your PDF; a card from a highlighted YouTube moment starts the video there, and one from a lecture's transcript sentence links to its moment. No trust label; a source for cards from pasted text or a topic is not described.Source: RemNote Help (PDF reader)Source: RemNote Help (YouTube)Source: RemNote (lecture recorder)
PartlyFlashcards have an Explain button, and chat answers cite the passages they used; a source on each flashcard is not described.Source: Gemini Notebook Help (flashcards and quizzes)Source: Gemini Notebook Help (chat)
AI cards from your material
YesFrom PDF, Word, PowerPoint, text or Markdown files, pasted notes, lecture audio up to 60 minutes, or just a topic; photos of notes on Plus and Pro.
NoNot part of Anki itself; add-ons offer it. AnkiHub's paid Premium add-on finds existing cards that match your lecture, but does not write new ones.Source: apps.ankiweb.netSource: AnkiHub (Smart Search)
YesStudy Guides from pasted text, files or photos; Smart Assist from text, a file or a topic; Ask Quizlet (US only) from up to 3 files.Source: Quizlet HelpSource: Quizlet Help (Smart Assist)Source: Quizlet Help (Ask Quizlet)
YesFrom pasted text and notes (their images too), PDFs, PowerPoint, Word, a web page or YouTube link, or a recording, metered in AI credits.Source: RemNote HelpSource: RemNote (any source to cards)Source: RemNote Help
YesFrom a notebook's sources: PDFs, Word, PowerPoint, Google Docs and Slides, web pages, YouTube videos, audio, images, ebooks or pasted text, up to 50 sources a notebook on the free plan.Source: Gemini Notebook Help (sources)Source: Gemini Notebook Help (flashcards and quizzes)
Lecture recordings
YesUpload a recording up to 60 minutes (MP3, M4A, WAV, OGG or WebM); the app does not record. Each card names roughly when it was said (“around 12:30”), and study plays the recording from that moment. Audio costs 8 credits a minute, so the planned 200 free credits cover about 25 minutes.
NoNot described on Anki's pages.Source: apps.ankiweb.net
YesAudio Notes: up to 5 hours or 500 MB, recorded in the phone apps or uploaded on the web, into a study guide and a flashcard set; limited on Free and Plus. A card linking to its moment is not described.Source: Quizlet Help
YesA lecture recorder with live transcription, listed under the Pro with AI plan (about 600 credits an hour). Cards made from a transcript sentence link back to its moment.Source: RemNote (lecture recorder)Source: RemNote Help (lectures)Source: remnote.com/pricing
YesThe phone apps can record a lecture into a notebook (rolling out since 15 September 2026), and audio files up to 200 MB work as sources. A card linking to its moment is not described.Source: Google blog, 15 September 2026Source: Gemini Notebook Help (sources)
Hide the labels on a diagram
YesOn Plus and Pro the AI finds a diagram's labels and hides them, one card per label; adjust any mask or draw your own. Anki image occlusion notes import too.
YesImage occlusion built in and free; you draw the masks.Source: Anki manual
PartlyDiagram sets, Plus only and made on the website: label points on one image.Source: Quizlet Help
YesImage occlusion: 5 images on Free, unlimited on Pro. AI can place the masks for you (50 runs a month on Free, 500 on Pro).Source: RemNote HelpSource: remnote.com/pricing
NoNot described in Google's flashcards help.Source: Gemini Notebook Help (flashcards and quizzes)
Quizzes
YesType-in, multiple choice and multiple response questions from the same material, with the same label, passage and check as cards.
NoQuestion and answer cards; no quiz mode described.Source: Anki FAQ
YesTest, Learn and games; AI practice tests from your notes or sets, multiple choice or written, in English. Limited on the free tier.Source: Quizlet HelpSource: Quizlet Help (practice tests)
YesAI quizzes per section, multiple choice or free response; the pricing page lists them under Pro with AI.Source: RemNote HelpSource: remnote.com/pricing
YesQuizzes from your sources with a hint and an explanation; short answer, multiple select and fill in the blank were announced on 15 September 2026 as coming soon.Source: Gemini Notebook Help (flashcards and quizzes)Source: Google blog, 15 September 2026
Ask questions about your material
PartlyThe assistant answers from the files attached to that chat and quotes them; it does not search all your decks or earlier chats.
Does not apply: no built-in AI.
PartlyAsk Quizlet answers questions about up to 3 files and makes flashcards; only in the US, for ages 14 and over.Source: Quizlet Help (Ask Quizlet)
YesThe AI Tutor searches all your notes and documents and answers with citations you click to jump to.Source: RemNote Help (AI Tutor)
YesWhat it is built for: chat across all of a notebook's sources, with answers that cite the passages they used.Source: Gemini Notebook Help (chat)
Spaced repetition
YesA simplified FSRS 6 with default parameters and a retention target per deck. No optimiser for your own reviews and no same-day learning steps: the next review is at least a day away. Cram decks for the night before.
YesSM-2 by default. Switch on FSRS 6 (one switch for all presets; retention and parameters per preset) and its optimiser fits it to your reviews. Same-day learning steps.Source: Anki manualSource: Anki 25.07 release notes
YesA Spaced Repetition mode in Flashcards, on the website only; the algorithm is not named.Source: Quizlet Help
YesAnki SM-2 by default; FSRS 6 as a beta you switch on, with an optimiser for your own reviews.Source: RemNote Help
NoA review schedule is not described. Flashcards remember your “Got it” and “Missed it” marks, and the chat can tell you where to focus next.Source: Gemini Notebook Help (flashcards and quizzes)Source: Google blog, 15 September 2026
Study reminders
YesBy push or email, at most one a day at the hour you usually study: cards due, your streak and goal, drafts waiting. On an iPhone, push needs Mnema on the Home Screen.
YesA daily reminder in the iPhone and Android apps; not described on desktop.Source: AnkiMobile manualSource: AnkiDroid manual
YesCan send a daily reminder at 10 a.m. when Spaced Repetition cards are due.Source: Quizlet Help
YesA push notification at the time you choose if you have not reached your daily goal, and reminders from the exam scheduler. Email reminders are not described.Source: RemNote Help (daily goal)Source: RemNote (exam scheduler)
NoNot described; the notices described are about usage limits.Source: Gemini Notebook Help (usage limits)
Apps and offline
PartlyIn the browser on a laptop, tablet or phone, and you can add it to your Home Screen. Needs a connection: no native app and no offline study.
YesWindows, macOS, Linux, iPhone and Android. Your collection is stored on your device.Source: apps.ankiweb.net
YesWeb, iPhone and Android. Offline study in the apps (Flashcards and Match) on paid plans.Source: Quizlet Help (offline)Source: Quizlet Help
YesWeb, desktop, iPhone and Android. The desktop apps work fully offline; the phone apps study offline with recently used media; the web app keeps working while its tab stays open.Source: RemNote (offline mode)
PartlyWeb, Android and iOS apps. Audio Overviews download for offline listening; offline flashcards are not described.Source: Gemini Notebook Help (mobile app)
Bring your Anki decks
Yes.apkg and .colpkg up to 200 MB, with media, cloze and image occlusion notes. Studied cards keep their schedule (FSRS as it was, SM-2 converted), each card of a note its own, and the review history comes along, marked as imported so it never counts toward your streak or points. Image occlusion notes start as new cards.
Anki's own format.
NoPaste text on the website; importing an Anki or CSV file is not described.Source: Quizlet Help
YesImports Anki decks with review history and image occlusion cards.Source: RemNote Help
NoNot described: Anki packages are not among its source types.Source: Gemini Notebook Help (sources)
Export
YesAn Anki package (.apkg) of a deck, a quiz (as cards) or all your decks, with cloze, type-in and image occlusion cards, pictures and sounds; tick “Include my review progress” and due dates and review history go along. CSV or plain text too, with media in a ZIP if you want it.
Yes.apkg and .colpkg with scheduling, or plain text.Source: Anki manual
PartlyCopy the text of your own sets, on the website.Source: Quizlet Help
YesAnki .apkg (flashcards only), Markdown, HTML, OPML and plain text.Source: RemNote Help
PartlyFlashcards download as a CSV file.Source: Gemini Notebook Help (flashcards and quizzes)
Shared decks
PartlyA public library of decks and quizzes to search, import and rate, still small in early access.
YesAnkiWeb shared decks by subject, opened with Get Shared.Source: Anki manual (shared decks)
YesMillions of public sets to search.Source: Quizlet Help
YesCommunity courses and study decks, with thousands of shared notes and flashcards for the MCAT, USMLE Step 1 and more.Source: RemNote HelpSource: RemNote (AI cards)
PartlyShare a notebook with anyone by link, and browse featured notebooks from publishers and authors; a library of shared flashcard decks is not described.Source: Gemini Notebook Help (public notebooks)

Anki, Quizlet, RemNote, NotebookLM and Gemini Notebook are trademarks of their respective owners; NotebookLM and Gemini Notebook belong to Google LLC. Mnema is not affiliated with any of them. All prices are US prices: Mnema's from its pricing page, Anki's iPhone price from the US App Store, Quizlet's, RemNote's and Google's from their own sites (Quizlet shows each country its own price; RemNote's page shows yearly billing); none of them states whether sales tax is included.

Where the others are better

Mnema is a young web app in early access. These apps have years on it, and it shows.

Anki

  • Free on desktop, Android and the web; the iPhone app is a one-time purchase, not a subscription.
  • Native apps on every platform that work offline, with your collection stored on your device.
  • FSRS 6 with an optimiser that fits it to your own reviews, same-day learning steps, and image occlusion with no limits.
  • Its own package format carries your cards and scheduling to any Anki app, and it has the biggest ecosystem of shared decks and add-ons. It is open source; since February 2026 its creator has been handing its stewardship to AnkiHub, which says the core stays open source.

Quizlet

  • Open to everyone, with a free tier and polished phone apps that study offline on paid plans.
  • A huge library of public sets, plus games and class tools like Classic Quizlet Live.
  • Lecture audio up to 5 hours, recorded in the phone apps, becomes a study guide and a flashcard set.
  • Paid plans from $35.99 a year in the US.

RemNote

  • Learns from YouTube videos, and a card from a highlighted moment starts the video there; Mnema takes no video links.
  • Desktop apps that work fully offline and phone apps that study offline, with notes and cards in one knowledge base.
  • Open to everyone, with 250 AI credits a month on the free tier, an AI Tutor that answers from all your notes, and FSRS 6 with an optimiser as a beta.
  • A lecture recorder with live transcription, where Mnema takes a recording you upload.

NotebookLM

  • Free with a Google account and open to everyone, with apps for Android and iOS.
  • Better for understanding a pile of sources: chat across a whole notebook, with answers that cite the passages they used.
  • Takes almost any source, YouTube videos, Google Docs and web links included, and Deep Research browses up to hundreds of sites into a report.
  • More than flashcards: reports, mind maps, audio and video overviews from the same sources, and the phone app records your lectures.

Questions

How is Mnema different from RemNote?

RemNote is a notes app that also makes flashcards. Mnema does one job: it turns your lectures, slides and PDFs into cards and quizzes you can check, and brings them back on a schedule until the exam. Three things set it apart, and RemNote's own pages, read on 1 October 2026, describe none of them. Each AI card says how far to trust it: from your source, source plus AI, or general knowledge. A second check reads each card against its passage, and a card the source does not support is dropped or labelled general knowledge. And with no notes at all, Mnema searches the web and cites the page each card came from (Plus and Pro). Nothing is saved until you approve it with its passage beside it. In study both apps take you back to the source, down to the sentence in your PDF; Mnema opens your slides or Word file there too, highlighted, or plays your lecture from that moment. If you want notes, YouTube videos and offline apps in one place, pick RemNote. If you want AI cards you can check before an exam, pick Mnema.

Should I use NotebookLM or Mnema for studying?

For different parts of it. NotebookLM, now Gemini Notebook, is better for understanding a pile of sources: chat across them, summaries, audio and video overviews and a quick set of flashcards. Mnema is for remembering them: cards and quizzes that say how far to trust them, checked against their source, kept in decks and brought back on a spaced repetition schedule until the exam. Many students use both.

Which of these apps show where an AI card came from?

Mnema shows it before you save: the passage and the page, slide, rough time or web page, a label saying how far to trust the card, and whether a second check read it against the passage. In study it opens your PDF, slides or Word file inside Mnema at the card's sentence and highlights it, opens a web page at its passage where the browser supports it, or plays your recording from that moment. RemNote's pin also opens the exact sentence in a PDF. NotebookLM's chat answers cite their passages, but a source on each flashcard is not described. Quizlet's study guides let you view your original upload. Anki has no built-in AI.

How does Mnema's spaced repetition compare with Anki's?

Mnema uses a simplified FSRS 6 with default parameters and a retention target per deck. It has no optimiser that fits the parameters to your reviews and no same-day learning steps, so a card comes back a day later at the soonest. Anki's FSRS 6 has both. If fine-tuned scheduling matters most to you, Anki is ahead.

Can I move my Anki decks to Mnema, and back?

Yes, both ways. Mnema imports .apkg and .colpkg files up to 200 MB and 50,000 notes, with media, cloze and image occlusion notes; studied cards keep their schedule and your review history comes along (image occlusion notes start as new cards). Back out, Mnema writes an Anki package (.apkg) of a deck, a quiz or all your decks, with pictures, sounds and image occlusion; tick “Include my review progress” and your due dates and review history go with it. CSV and plain text work too.

Does Mnema have a phone app or work offline?

Not yet. Mnema runs in the browser on laptops, tablets and phones, you can add it to your Home Screen, and it needs a connection. Anki, Quizlet and RemNote have native apps that study offline, and NotebookLM has phone apps too.

Is Mnema free?

Mnema is free during invite-only early access. The planned plans are a free tier with 200 AI credits every 30 days; Plus $9.99 a month or $79.99 a year; Pro $19.99 a month or $149.99 a year.

How was this comparison made?

Yevhen Maltsev, who builds Mnema, checked every Anki, Quizlet, RemNote and NotebookLM fact on that app's own website, help centre, blog or app store page on 1 October 2026, and each links there. Where a page does not describe something, we say “not described”, not “does not have”. We tried to be fair. If anything is out of date, email hello@mnema.me and we will fix it.

Try the cards before you choose

The live demo has real Mnema cards from a lecture recording, slides and a web search. Flip one and check where it came from.