Flashcard apps are everywhere, and most of them claim to be the best. The reality is more nuanced. Each app makes tradeoffs between simplicity, power, platform support, and what you get without paying. Some are great for cramming before a midterm. Others are built for long-term retention through spaced repetition. A few try to do both.
This guide covers seven flashcard apps with usable free tiers. For each one, we explain what it actually does, what the free version includes, where it falls short, and what kind of student it works best for. We are not ranking these in order of quality, because the right app depends entirely on how you study.
What to Look for in a Flashcard App
Before the list, a quick framework. The features that matter most depend on your study habits, but these are the categories worth evaluating:
- Card creation: How do you get information into the app? Manual typing, import, AI generation, or pre-made decks?
- Review scheduling: Does the app use spaced repetition, adaptive learning, or just let you flip through cards randomly?
- Platform availability: Can you study on your phone, your laptop, or both?
- Free tier generosity: What can you actually do without paying? Are the limits on content, features, or both?
- Content library: Does the app have pre-made flashcard sets, or do you need to build everything yourself?
With that in mind, here are seven apps worth considering.
1. Quizlet
Platforms: Web, iOS, Android Free tier: Create sets, study with basic modes, access community sets Paid: Quizlet Plus at $35.99/year
Quizlet is the most widely used flashcard platform in the world. Hundreds of millions of flashcard sets cover virtually every subject, from AP Biology to medical terminology to obscure university courses. If someone has studied it, there is probably a Quizlet set for it.
The free version lets you create your own flashcard sets and study them using basic Flashcards mode, Learn mode (adaptive questions), and Test mode. You can also browse and study any public set created by other users. The Match game and other interactive modes add variety beyond simple card flipping.
Quizlet's Learn mode uses adaptive scheduling that adjusts question difficulty based on your answers. It is not traditional spaced repetition in the Anki sense (there is no SM-2 algorithm tracking individual card intervals over weeks), but it does prioritize cards you struggle with during a session.
Best for: Students who want access to a massive library of pre-made content, especially for standardized test prep and common courses. Also good for collaborative studying since you can share sets with classmates. Full Sticky vs Quizlet comparison.
Limitations of free tier: Ads are present throughout the experience. No offline access. No custom images on the free plan. Some study modes are limited or locked behind Plus. The adaptive scheduling is session-based rather than designed for long-term retention across weeks and months. Quizlet has gradually moved more features behind the paywall over the past two years.
2. Anki
Platforms: Desktop (Windows, Mac, Linux), iOS ($24.99), Android (free), Web (AnkiWeb) Free tier: Full functionality on desktop and Android Paid: $24.99 one-time purchase for iOS only
Anki is the gold standard for spaced repetition. Open-source, deeply configurable, and supported by nearly two decades of development. It uses the SM-2 algorithm by default and now offers FSRS, a machine learning-based scheduler that personalizes review intervals based on your individual memory patterns.
On desktop and Android, Anki is completely free with zero restrictions. You get the full feature set: custom card templates with HTML and CSS, cloze deletions, image occlusion, nearly 2,000 community add-ons, and complete control over scheduling parameters. AnkiWeb provides free sync between devices and a basic web interface for reviewing.
The community deck ecosystem is enormous. Medical students rely on shared decks like AnKing that cover entire curricula. Language learners have access to frequency-based vocabulary decks for dozens of languages.
Best for: Power users who want full control over their study system. Medical students (the AnKing deck alone has driven Anki adoption across medical schools). Anyone who studies primarily on desktop or Android and wants free, unrestricted spaced repetition. Full Sticky vs Anki comparison.
Limitations of free tier: The iOS app costs $24.99, which funds ongoing development. The learning curve is genuinely steep. The interface looks dated compared to modern apps, and new users often spend weeks learning how to configure decks, note types, and scheduling settings before feeling productive. Card creation is entirely manual unless you install third-party add-ons. There is no built-in AI assistance for generating cards.
3. Sticky
Platforms: iOS Free tier: AI card creation, SM-2 spaced repetition scheduling, daily review sessions Paid: Premium options available
Sticky focuses on two things: getting cards created fast and scheduling reviews using proven spaced repetition. The core idea is that most students already have study material (lecture notes, textbook pages, handwritten notes) and just need it turned into flashcards without hours of manual data entry.
The AI card creation is the main differentiator. You can snap a photo of notes, paste text, or use voice input, and the app generates question-answer pairs from your material. Once cards exist, the SM-2 algorithm handles scheduling. You rate each card as Easy, Medium, or Hard, and the app calculates when to show it next. All your decks feed into a single daily review session, so you never have to choose which subject to study first.
The free tier includes the AI generation features and full spaced repetition scheduling. You get the complete study loop (create cards, review on schedule, track progress) without paying.
Best for: Students who want to study their own notes but hate the time investment of manual card creation. If you have lecture slides, handwritten notes, or textbook chapters and want a study-ready deck in minutes, Sticky gets you there faster than any other option.
Limitations of free tier: iOS only, with no desktop or Android app. The platform restriction is significant if you study across multiple devices. Less customization than Anki (no custom card templates, no add-on ecosystem). The pre-made content library is smaller than Quizlet's or Anki's community decks.
4. Brainscape
Platforms: Web, iOS, Android Free tier: Create classes with up to 100 cards per deck, access some certified content Paid: Brainscape Pro at $9.99/month or $59.88/year
Brainscape uses a confidence-based repetition system. After seeing each card, you rate your confidence from 1 to 5, and the app uses that rating to determine how soon the card appears again. Cards you rate low repeat more frequently within a session, while high-confidence cards space out.
The platform includes a library of "certified" flashcard sets created by subject matter experts, covering topics like standardized test prep, language learning, and professional certifications. Some certified content is available on the free tier, but the full library requires a Pro subscription.
Card creation is straightforward. You organize cards into "classes" and "decks," and the interface is clean and modern compared to Anki. Brainscape also supports shared classes, which makes it useful for study groups or tutoring.
Best for: Students who want a cleaner interface than Anki but still want repetition-based scheduling. Good for professional certification prep where Brainscape has certified content (bar exam, real estate, nursing). Study groups that want to share decks easily.
Limitations of free tier: The 100-card-per-deck limit is restrictive for subjects with lots of material. Full access to the certified content library requires Pro. The confidence-based system is simpler than SM-2 or FSRS, and you cannot configure the scheduling algorithm. Creating cards is still manual, with no AI-assisted generation.
5. Knowt
Platforms: Web, iOS, Android Free tier: Unlimited flashcards, AI flashcard generation from notes, spaced repetition Paid: Knowt Plus at $5.99/month or $35.99/year
Knowt has gained traction as a Quizlet alternative, particularly since Quizlet started restricting its free tier. The pitch is similar (create and study flashcards across devices) with a more generous free plan and AI features baked in from the start.
The standout free feature is AI-generated flashcards from notes. You can paste your notes or upload documents, and Knowt generates flashcards from the content. The app also includes a spaced repetition mode, practice tests, and a "Learn" mode similar to Quizlet's adaptive studying.
Knowt lets you import Quizlet sets directly, which has helped it grow quickly among students switching platforms. The interface is modern and the free tier is genuinely generous compared to Quizlet in 2026.
Best for: Students who want a Quizlet-like experience with fewer paywall restrictions. If you switched away from Quizlet after free tier changes and want something similar with AI note-to-card conversion included for free, Knowt fits that niche well. Full Sticky vs Knowt comparison.
Limitations of free tier: The spaced repetition implementation is less transparent than Anki's or Sticky's. You cannot see or configure the underlying algorithm. AI generation quality varies depending on the complexity and formatting of your source notes. The platform is newer, so the pre-made content library is smaller than Quizlet's. Some advanced AI features and study analytics are locked behind Plus.
6. Mochi
Platforms: Desktop (Windows, Mac, Linux), Web Free tier: 100 cards, Markdown support, spaced repetition Paid: $5/month or $50 one-time purchase
Mochi takes a different approach by combining note-taking with flashcards. Cards are written in Markdown, which makes them feel more like structured notes than traditional flashcards. You can embed images, use cloze deletions, and organize cards into nested decks.
The spaced repetition system uses an SM-2-based algorithm. Cards are scheduled automatically based on your performance, and the desktop app syncs with the web version. The Markdown-native approach means you can write cards quickly if you are already comfortable with that syntax.
Mochi's design is minimalist and focused. There are no gamification features, no social sharing, no community decks. It is purely a personal study tool.
Best for: Students and knowledge workers who think in Markdown and want flashcards integrated into a note-taking workflow. Developers and technical learners who want to include code snippets and formatted content in their cards. Anyone who values a clean, distraction-free interface.
Limitations of free tier: The 100-card limit is tight. Most students will hit it within a week of active use, which effectively makes Mochi a paid tool for serious studying. No mobile app (web only on mobile). No community decks or shared content. The Markdown-first approach has a learning curve for students who are not already familiar with the syntax.
7. Noji
Platforms: iOS, Android Free tier: Card creation, spaced repetition, basic study features Paid: Premium features available
Noji is a mobile-focused flashcard app that prioritizes clean design and ease of use. The interface is polished, with smooth animations and a thoughtful layout that makes studying feel less like a chore.
Card creation is manual but quick. The app supports basic formatting, images, and text-to-speech. Spaced repetition scheduling is built in, so cards you find difficult appear more frequently. Noji also includes study streaks and gentle reminders to keep you consistent.
The free tier covers the core flashcard experience: create cards, study with spaced repetition, and track your streaks. Premium unlocks additional features like advanced statistics and customization options.
Best for: Students who want a visually appealing, mobile-first flashcard app with spaced repetition. If design and usability matter to you more than raw power, Noji delivers a polished experience. Good for casual to moderate study loads. Full Sticky vs Noji comparison.
Limitations of free tier: No desktop or web app. The content library is limited compared to Quizlet or Anki's community. Fewer advanced features (no cloze deletions, no image occlusion, no custom templates). Less suited for heavy-volume studying like medical school or bar exam prep.
Comparison Table
| Feature | Quizlet | Anki | Sticky | Brainscape | Knowt | Mochi | Noji |
|---|---|---|---|---|---|---|---|
| Free card limit | Unlimited | Unlimited | Unlimited | 100/deck | Unlimited | 100 total | Unlimited |
| Spaced repetition | Adaptive | SM-2 / FSRS | SM-2 | Confidence-based | Yes (proprietary) | SM-2-based | Yes |
| AI card creation | Paid only | No (add-ons exist) | Yes (free) | No | Yes (free) | No | No |
| Pre-made decks | Massive library | Large community | Growing | Certified library | Growing | None | Limited |
| Platforms | Web, iOS, Android | Desktop, iOS*, Android, Web | iOS | Web, iOS, Android | Web, iOS, Android | Desktop, Web | iOS, Android |
| Offline access (free) | No | Yes | Yes | Limited | No | Yes (desktop) | Yes |
| Custom card templates | No | Yes | No | No | No | Yes (Markdown) | No |
| Paid price | $35.99/yr | Free (iOS: $24.99) | Premium available | $59.88/yr | $35.99/yr | $50 one-time | Premium available |
*Anki iOS costs $24.99 as a one-time purchase. All other platforms are free.
How to Choose the Right Flashcard App
Picking the right app comes down to a few practical questions.
What platform do you study on?
This is the single biggest filter. If you study on desktop, Anki and Mochi are strong free options. If you study on an iPhone, Sticky and Quizlet are solid choices. If you need cross-platform sync on a free plan, Quizlet and Knowt cover web, iOS, and Android.
Do you want to create cards or find existing ones?
If you want a huge library of pre-made flashcards, Quizlet is unmatched. Anki's community decks are excellent for medical and language study. If you prefer to study your own notes, Sticky and Knowt can generate cards from your material using AI. If you want to type cards manually, any app on this list works.
How important is spaced repetition to you?
For short-term exam prep (studying for a test next week), the scheduling algorithm matters less. Quizlet and Knowt work fine for cram sessions. For long-term retention (learning a language over months, retaining medical knowledge across years), a dedicated spaced repetition system like Anki or Sticky makes a measurable difference. See our guide to how spaced repetition works for the research behind this.
What is your budget?
If you want to spend nothing at all, Anki on desktop or Android gives you the most powerful free flashcard tool available. Quizlet and Knowt offer generous free tiers with some limitations. Sticky is free on iOS. Mochi and Brainscape's free tiers are more restrictive, effectively pushing you toward their paid plans for regular use.
How much do you care about design?
This is subjective but real. If a clunky interface kills your motivation to study, Noji and Sticky offer polished experiences. Quizlet and Knowt have modern interfaces. Anki's interface is functional but not attractive, and Mochi's Markdown-first approach feels technical. You will use the app you actually want to open.
The Honest Recommendation
There is no single best flashcard app. Here is who should use what:
- You want the largest content library and cross-platform access: Quizlet. The free tier has gotten more restrictive, but no other platform matches its breadth of pre-made sets.
- You want the most powerful free spaced repetition tool: Anki on desktop or Android. Nothing else comes close in terms of features, customization, and zero-cost access.
- You want to turn your own notes into flashcards fast: Sticky on iOS or Knowt on any platform. Both use AI to generate cards from your material, saving hours of manual creation.
- You want a clean, low-friction mobile experience: Noji for a polished interface, or Sticky for AI creation combined with spaced repetition.
- You want flashcards integrated with note-taking: Mochi, if you are comfortable with Markdown and willing to pay after outgrowing the 100-card free limit.
- You want certified, expert-made content: Brainscape, especially for professional certifications.
The best approach is to pick one app and commit to it for at least two weeks. Switching between apps fragments your study data and costs you the benefits of spaced repetition, which only works when the algorithm has a history of your performance on each card. Try the free tier. If it fits how you study, stick with it. If it does not, you have only lost a little time.
For more on building an effective study system, check out our guide on how to make effective flashcards and our deep dive into spaced repetition.
