AnkiDroid Review: Free, Open Source Anki for Android (2026)

Every AnkiDroid review eventually says the same thing: it is free, it is powerful, and the interface looks like it was designed by engineers rather than product designers. All three are true, and none of them fully answer whether you should install it. This review goes further — a hands-on look at what AnkiDroid actually does well in 2026, where it genuinely struggles, how its review scheduling works under the hood, and how it stacks up against Quizlet, Brainscape, and Memrise for real study workflows. If you search "anki review" you may actually be asking a different question — how Anki's review queue and scheduling mechanics work, rather than whether the app itself is good. We cover both, starting with a verdict up front so you do not have to read 3,000 words to get an answer.

What Is AnkiDroid?

AnkiDroid is a free, open-source flashcard app for Android that implements Anki's spaced repetition system. It is not made by the same team that builds Anki desktop — it is a separate, community-maintained project, released under the GPL-3.0 license, developed in the open on GitHub by volunteers. It is also not the same product as Anki Pro, a separate paid app with a confusingly similar name — our Anki Pro vs Anki explainer clears that up. It reads and writes the same .apkg deck format as Anki desktop, syncs through the same free AnkiWeb service, and implements the same FSRS scheduling algorithm, so a deck built on desktop behaves identically on the phone.

It is available on the Google Play Store and, notably, on F-Droid — the open-source app repository favored by users who want to avoid Google Play entirely. That dual availability is itself a signal about who builds and maintains this app: a volunteer community that treats openness as a feature, not an afterthought. If you are new to the whole Anki ecosystem and are not sure what a "deck" even is or how the desktop and mobile pieces relate, our what is an Anki deck explainer is the right starting point before this review.

On the Google Play Store, AnkiDroid currently holds a 4.77-star rating from more than 150,000 ratings, with an estimated 3 million active users. For a niche study-tools category, that is an unusually large and unusually loyal user base — most of it earned by word of mouth in medical schools, language-learning communities, and exam-prep forums rather than by advertising.

AnkiDroid Review 2026: The Short Verdict

AnkiDroid is the best free flashcard app on Android, full stop. If you are willing to spend an hour learning how decks, cards, and review settings fit together, nothing else on Android gets close to its combination of scheduling quality, deck compatibility, and price. The honest caveats: the interface is functional rather than beautiful, building your own decks from scratch is slower than in Quizlet, and the settings menu has enough options to intimidate a first-time user.

Who should install it today: anyone already using Anki on desktop who wants mobile review, med and dental students who need the AnKing deck on the go, serious language learners who have outgrown gamified apps, and anyone who wants a spaced-repetition tool with zero subscription risk. Who should look elsewhere first: casual learners who just want to make a quick set for next week's quiz — Quizlet's onboarding is friendlier for that single use case, at least until the free tier's limits start to bite.

Key Features That Actually Matter

Reviews of flashcard apps tend to list every menu item as a "feature." Here is the shorter list of things that actually change your day-to-day study experience.

Full FSRS scheduling. AnkiDroid 2.17 and later include complete support for FSRS (Free Spaced Repetition Scheduler), the modern algorithm that replaced Anki's older SM-2 system. FSRS models your individual forgetting curve per card rather than applying a fixed multiplier, which in practice means fewer wasted reviews on cards you already know cold and tighter scheduling on cards that are actually shaky.

Free AnkiWeb sync, evaluated honestly. As a feature under evaluation here: sync is free and works across devices — desktop, iOS, and Android all read and write the same AnkiWeb account, so cards created on your laptop appear on your phone within seconds of syncing. We are not covering the setup steps in this review; if you need the full account-creation, sign-in, and troubleshooting walkthrough, see our AnkiDroid login and sync walkthrough, which covers every error message you might hit along the way.

Full offline support. Nothing about creating, editing, or reviewing cards requires a network connection. AnkiDroid queues your review history locally and syncs it the next time you have signal, which matters if you study on a subway, a flight, or anywhere coverage is spotty.

Rich card types. Cloze deletions, image occlusion (via add-ons on desktop, then synced), audio playback, and LaTeX rendering for math and chemistry all work on AnkiDroid. This is the same card-type engine as desktop, not a stripped-down mobile subset.

The AnkiWeb shared deck library. Tens of thousands of community decks are one download away, covering everything from medical licensing exams to vocabulary lists for dozens of languages. AnkiDroid can browse and download shared decks directly on the device, no desktop required.

Pricing: Free on Android, $24.99 on iPhone

Here is the single most important thing to know before you tell a friend to "just get Anki": the pricing is not symmetrical across platforms, and it trips people up constantly.

Platform	App	Price
Android	AnkiDroid	Free (no ads, no IAP)
Windows / Mac / Linux	Anki desktop	Free
iOS (iPhone/iPad)	AnkiMobile	$24.99 one-time
Any browser	AnkiWeb	Free

Is AnkiDroid free? Yes — entirely, with no catch. It is free on the Google Play Store and free on F-Droid, with no advertising and no in-app purchases gating features. The classic gotcha in this ecosystem is that the Android app is free while the iOS app, AnkiMobile, costs $24.99 as a one-time purchase, not a subscription. That fee reportedly funds a meaningful share of ongoing Anki desktop development, which is part of why the ecosystem has stayed free and open for two decades. If your primary device is an iPhone rather than an Android phone, see our dedicated Anki on iPad setup guide for the AnkiMobile-specific walkthrough and cost breakdown; can I use AnkiDroid on iPhone is a question we get often, and the short answer is no — AnkiDroid is Android-only.

Anki desktop itself is also free on Windows, Mac, and Linux, and if you have not installed it yet, our Anki download guide for Mac and Windows walks through setup, including the common Gatekeeper warning on macOS.

How Anki Review Scheduling Works

A lot of people who type "anki review" into a search bar are not looking for a product review at all — they are trying to understand what a review actually is inside the app: why a due count keeps climbing, what "Again," "Hard," "Good," and "Easy" mean, or why a card they just answered correctly is showing up again tomorrow instead of next month. This section is for that reader.

The four review buttons. Every time AnkiDroid shows you a card and you flip it to reveal the answer, you rate your own recall on a four-point scale:

• Again — you got it wrong, or could not recall it at all. The card re-enters a short learning queue and comes back within minutes, then again later the same day.
• Hard — you got it right, but it took real effort or you hesitated. The next interval grows, but by a smaller multiplier than "Good."
• Good — you recalled it correctly at a normal pace. This is the default, expected response for a healthy card.
• Easy — you recalled it instantly with no effort. The interval jumps much further out, on the assumption the card no longer needs frequent review.

Intervals and due counts. Every card has a "due date" — the next calendar day it will appear in your review queue. A new card you just learned might be due again in 1 day; if you keep answering "Good," the interval might grow to 3 days, then 8, then 21, then 2 months, and so on, following an expanding curve. The "due count" you see on the deck list is simply the number of cards whose due date has already arrived, plus any new cards you have not learned yet that day.

Review backlog. If you skip a few days of study, your due count does not reset — it accumulates. Cards that came due yesterday, the day before, and today all stack into one growing queue, and unlike some competitor apps, AnkiDroid does not quietly drop or reschedule them for you. This is by design: the whole point of the algorithm is that it is scheduling based on when your memory is expected to need reinforcement, not on some arbitrary daily quota.

Daily review limits. To keep a backlog from becoming an unmanageable wall of cards, AnkiDroid lets you cap how many new cards and how many total reviews appear per day, per deck. A common default is 20 new cards a day; serious learners running large decks (like the AnKing medical deck) often raise total daily reviews into the hundreds. Setting these limits too low means content queues up faster than you clear it; too high and a single missed day can produce an intimidating pile of reviews the next morning.

FSRS vs. the legacy SM-2 algorithm. For most of Anki's history, the scheduling engine was SM-2, an algorithm from 1987 that multiplies each card's interval by a fixed "ease factor" every time you answer "Good." It works, but it is a blunt instrument: every card at the same ease factor gets treated identically regardless of your actual memory for that specific fact. FSRS (Free Spaced Repetition Scheduler) replaces that with a model fitted to your own review history — it estimates each card's individual difficulty and stability and computes the interval that keeps your predicted recall probability near a target you set (commonly around 90%), as documented in the official Anki manual's FSRS deck options. Does AnkiDroid have FSRS support? Yes: AnkiDroid 2.17 and later include full FSRS, matching Anki desktop feature-for-feature, and you can switch any deck over to it in Settings without losing review history. Every Anki review you log feeds that model, so the scheduler gets more accurate the longer you use it. Our deep dive on spaced repetition study techniques covers the algorithm history and scheduling math in more depth if you want the full picture beyond what a single app's settings menu explains.

The Learning Curve — And Whether It's Worth It

The elephant in the room has to be addressed: the interface is not intuitive on first launch. The deck list looks like a spreadsheet. The settings menu has dozens of options with names like "new card gather order" and "leech action" that mean nothing until you have used the app for a week. Creating a card from scratch involves choosing a "note type" before you even see a text field. None of this is accidental complexity — it is the cost of exposing genuine configurability instead of hiding it behind a simplified, one-size-fits-all experience — but it is real friction for a first session.

The upside is that this cost is front-loaded and one-time. Most users report the interface "clicks" somewhere between day three and week two: once you understand that due counts are cumulative, that the four buttons control future scheduling rather than just marking right/wrong, and that deck options apply per-deck rather than globally, the app stops feeling foreign. Compare that to something like Quizlet or Brainscape, where day one is effortless but you eventually hit a ceiling — either a paywall or a scheduler that cannot express the nuance FSRS captures.

If you are coming from zero flashcard experience, building good study habits before you pick a tool will make this curve shorter. Our active recall apps guide covers the underlying study technique that makes any spaced-repetition app worth using in the first place, independent of which specific app you land on.

AnkiDroid vs Quizlet, Brainscape and Memrise

AnkiDroid is not competing to be the prettiest app in this category — it is competing to be the most effective one for a given kind of learner. Here is where it wins, where it loses, and where our own product fits into the picture honestly.

Feature	AnkiDroid	Quizlet	Brainscape	Memrise	Flashcard Maker
Platform	Android only	Web, iOS, Android	Web, iOS, Android	Web, iOS, Android	Chrome (desktop)
Price (free tier)	Free, no ads	Limited free; Plus $35.99/yr	Limited free; Pro from $7.99/mo	Limited free; Pro ~$8.99/mo	Free
Spaced repetition	FSRS 6.0 (best-in-class)	Basic Learn mode, no FSRS	Confidence-based (1–5)	Proprietary, gamified	FSRS (Again/Hard/Good/Easy)
Card creation	In-app editor; import .apkg	In-app editor; AI assist (paid)	Mostly curated content	Mostly curated courses	Right-click on any webpage
Offline use	Full	Paid tier only	Limited	Limited	Full (desktop, local-first)
Account required	No (AnkiWeb optional for sync)	Yes	Yes	Yes	No

Is AnkiDroid better than Quizlet? For anything you need to remember beyond a few weeks, yes. FSRS is a materially better scheduler than Quizlet's Learn mode, and AnkiDroid never paywalls a feature. Quizlet wins on things AnkiDroid does not even attempt: teacher-assigned class sets, a Match game mode, and an interface that a distracted teenager will actually open voluntarily. For a full head-to-head on algorithm and pricing specifics, see our Anki vs Quizlet comparison. If Quizlet's shrinking free tier is what sent you looking for options, our roundup of Quizlet alternatives covers ten tools beyond just Anki.

Brainscape trades algorithm sophistication for curated content quality. Its confidence-based rating system is more approachable than Anki's four buttons, and its professionally written GRE, LSAT, and certification decks are genuinely good. But you pay a recurring subscription for that polish, and the underlying scheduler is simpler than FSRS.

Memrise leans hardest into gamification — streaks, points, and native-speaker video clips make early language sessions feel more like a game than a drill. That is a real strength for beginner motivation. It is also the app furthest from AnkiDroid in philosophy: Memrise optimizes for daily engagement, AnkiDroid optimizes for long-term retention efficiency, and those goals occasionally pull in different directions.

Where Flashcard Maker fits, honestly: it is not a mobile app and does not try to be. It is a Chrome desktop extension — not an AnkiDroid replacement on your phone. What it does well is different: highlight text on any webpage, right-click, and a card is created in the Chrome side panel in about two seconds, no separate app, no account, local-first storage in the browser via IndexedDB, and full FSRS spaced repetition running offline. It can import Quizlet TSV or CSV, and lets you export your decks to a Quizlet-ready TSV file when you want to move them elsewhere. If your primary study device is a laptop and your primary source material is web pages — documentation, articles, research papers — it is worth pairing with AnkiDroid rather than choosing one over the other: capture on desktop while reading, review on your phone with AnkiDroid, or vice versa. Our full flashcard app comparison ranks all seven tools side by side if you want the broader picture beyond this one review.

Who AnkiDroid Is Actually For

Medical and dental students. Is AnkiDroid worth using for medical school? Overwhelmingly yes. The AnKing deck — the de-facto standard companion deck used alongside First Aid, Pathoma, and Sketchy — is built for Anki, and most students split review between desktop for building/editing and AnkiDroid for the bulk of daily reps between classes, in clinic, and during commutes. See our dedicated Anki for medical school guide for deck-by-deck and phase-by-phase recommendations, and our broader medical flashcards guide for card-writing principles that apply regardless of which deck you run.

Serious language learners. Once you have outgrown a gamified app's beginner curriculum, AnkiDroid's shared-deck library and audio support handle the intermediate-to- advanced grind better than almost anything else free. Our Anki language learning guide covers deck selection and FSRS settings by language.

Anyone already invested in the Anki ecosystem. If you build decks on desktop, AnkiDroid is simply how you review them on the go — there is no real competitor for that specific role, because nothing else reads native Anki decks.

Who should look elsewhere, at least at first: a student who needs one study set for one quiz next Tuesday and does not plan to keep studying the material afterward. Building an AnkiDroid deck from scratch for a single short-term use case is more setup than the payoff justifies — Quizlet's five-minute onboarding wins that specific scenario.

Honest Pros and Cons

Pros:

• Completely free on Android — no ads, no in-app purchases, no premium tier.
• Full FSRS 6.0 scheduling, matching Anki desktop feature-for-feature.
• Open source under GPL-3.0, also distributed on F-Droid for users who avoid Google Play.
• Full offline support; syncs automatically once reconnected.
• Free AnkiWeb sync across desktop, iOS, and Android.
• Access to the entire AnkiWeb shared deck library, including AnKing for medical students.
• Rich card types: cloze, audio, image, and LaTeX rendering.

Cons:

• Android only — no iOS version; the iOS equivalent (AnkiMobile) costs $24.99.
• Interface is functional, not polished; the settings menu can overwhelm new users.
• Creating decks from scratch on a phone is slower than typing on desktop or using Quizlet's editor.
• No teacher/classroom features — not built for assigning content to a group.
• Genuine learning curve of one to two weeks before the workflow feels natural.

None of the cons are dealbreakers for the audience AnkiDroid is actually built for. They are real trade-offs for a tool that prioritizes scheduling quality and openness over a polished first-run experience, and for most of the people searching for an honest AnkiDroid review, that trade is worth making.

Frequently Asked Questions

Is AnkiDroid free?

Yes, fully free. AnkiDroid is distributed at no cost on the Google Play Store and on F-Droid, with no ads, no in-app purchases, and no premium tier gating any feature. It is also open source under the GPL-3.0 license, developed in the open on GitHub by a volunteer team. This is the opposite of the iOS side of the ecosystem, where the equivalent app, AnkiMobile, costs a one-time $24.99.

Is AnkiDroid better than Quizlet?

For long-term retention, yes — AnkiDroid's FSRS scheduler is more sophisticated than Quizlet's Learn mode, and AnkiDroid is completely free with no paywalled features. Quizlet wins on polish, social study sets, and multiple game-like study modes. If you are cramming for a test next week using a teacher's shared set, Quizlet is friendlier. If you are building vocabulary or medical knowledge that needs to last years, AnkiDroid's algorithm does more of the work for you.

Can I use AnkiDroid offline?

Yes. AnkiDroid stores your entire collection — cards, media, and scheduling data — on the device itself. You can create cards, study, and let the app reschedule reviews with zero network connection. AnkiWeb sync only kicks in when you have a connection and choose to sync; nothing about core study or card creation requires being online.

Does AnkiDroid have FSRS support?

Yes. AnkiDroid has shipped full FSRS support since version 2.17, matching Anki desktop's scheduler. You can switch a deck from the legacy SM-2 algorithm to FSRS in Settings, and AnkiDroid will recompute optimal intervals based on your actual review history rather than fixed multipliers.

Can I use AnkiDroid on iPhone?

No — AnkiDroid is Android-only. The iOS equivalent is AnkiMobile, a separate app built by the Anki desktop team, priced at $24.99 one-time. Both sync through the same AnkiWeb account, so a shared deck looks identical on either platform even though the apps themselves are different codebases. See our full walkthrough of setting up Anki on an iPad for the iOS-specific steps.

Is AnkiDroid worth it for medical school?

Yes, and it is close to mandatory for anyone doing serious review on the go. The AnKing deck — the de-facto standard companion deck for medical and dental school — is built for Anki and AnkiDroid, and most students review a portion of their daily cards on their phone between classes, in clinic, or on commutes. Desktop remains better for building and editing decks; AnkiDroid is where most of the actual review minutes happen.