Create a complete flashcard study system with deck management, smooth flip animations, quiz mode with scoring, and a spaced repetition algorithm that schedules reviews based on how well you know each card. Everything persists in localStorage so students never lose their progress.
Build Prompt
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Build a single-page flashcard maker and study tool as a static HTML/CSS/JS site. Use a dark theme with background #0f0f17, card surfaces #1a1a2a, and accent color #8b5cf6 (purple). The layout should have a left sidebar (260px) listing all decks and a main content area.
The sidebar shows a "Create Deck" button at the top that opens a modal for entering deck name and optional description. Below the button, list all decks with their name, card count, and a circular progress ring showing mastery percentage (cards marked as "known" / total cards). Clicking a deck selects it and loads its cards in the main area. Each deck has a three-dot menu for rename, delete (with confirmation), and export as JSON.
The main content area has two modes: Edit Mode and Study Mode, toggled via tabs at the top. In Edit Mode, show all cards in a two-column grid. Each card displays the front text truncated to two lines, with hover revealing edit and delete icons. An "Add Card" button opens a modal with a front field (term/question) and back field (definition/answer), both as textareas supporting multi-line content. Clicking an existing card opens the same modal pre-filled for editing.
In Study Mode, display one card at a time centered on screen (max-width 500px, min-height 300px). The card should have a smooth 3D CSS flip animation (transform: rotateY with perspective) triggered by clicking the card or pressing spacebar. Show the front by default. Below the card, display four buttons: "Again" (red, resets interval), "Hard" (orange, short interval), "Good" (green, medium interval), "Easy" (blue, long interval). These buttons implement a simplified SM-2 spaced repetition algorithm: each card tracks an ease factor (starting at 2.5), interval in days, and next review date. Only cards due for review appear in the study session. Show a progress bar at the top indicating "X of Y cards remaining in this session."
Include a Quiz Mode accessible from the deck view. Quiz mode presents each card as a multiple-choice question: show the front text and four answer options (the correct back text plus three random backs from the same deck). After answering all cards, show a results screen with score (correct/total), percentage, time taken, and a list of missed cards with correct answers highlighted in green. Store quiz history with timestamps so users can track improvement over time.
At the top of the sidebar, show overall stats: total cards across all decks, cards studied today, and current streak (consecutive days with at least one study session). All data — decks, cards, review schedules, quiz history, streak — must persist in localStorage. Include an import function that accepts JSON files to restore decks.
Make it fully responsive: on mobile (under 768px), the sidebar becomes a bottom sheet that slides up, and cards stack in a single column. Add keyboard shortcuts: spacebar to flip, 1-4 for rating buttons, left/right arrows for previous/next card in edit mode.
Read the guide at https://accessagent.ai/api/guide and follow it to deploy the site to AccessAgent.ai. My email is [your@email.com].
Make It Yours
Image Cards
Support image uploads on card fronts and backs using base64 encoding. Great for anatomy, art history, or visual vocabulary decks.
Markdown Support
Add basic Markdown rendering (bold, italic, code blocks, lists) on card content so users can format definitions with structure.
Deck Sharing via URL
Encode a deck as a compressed base64 string in the URL hash so users can share study decks via a simple link.
Audio Pronunciation
Add a speaker icon that uses the Web Speech API to read the card text aloud. Essential for language learning flashcards.
Tag Filtering
Let users tag cards with labels like "Chapter 1" or "Hard" and filter the study session to only include cards with selected tags.
Study Statistics Dashboard
Add a stats page showing a heatmap of study days, average accuracy over time, and which decks need the most review.
SEO Tips
Target "free flashcard maker" and "online flashcard tool" — these keywords have 20K+ monthly searches with lower competition than Anki-related terms.
Create subject-specific landing pages like "biology flashcard maker" or "SAT vocabulary flashcards" to capture long-tail search traffic from students.
Add FAQ schema answering "What is spaced repetition?" and "How do flashcards help studying?" to win featured snippets in education searches.
Write a blog post titled "Spaced Repetition vs Traditional Studying: Which Works Better?" and link to your tool as the free solution.
Include SoftwareApplication schema markup with "Free" offer and educational category to improve visibility in Google search results.
Monetization Ideas
Sell pre-made flashcard decks for popular subjects (AP Biology, MCAT, Bar Exam) at $4.99 each — import via JSON with one click.
Offer a premium tier ($3/month) that syncs decks across devices using a simple backend key-value store.
Add affiliate links to textbook retailers (Amazon, Chegg) with "Need the textbook for this deck?" prompts contextually placed.
Create a classroom edition ($29/year) where teachers can create decks and share them with students via a class code.
Offer an AI card generator add-on that auto-creates flashcards from pasted notes or textbook paragraphs for $1 per generation.