Readernook Lab

Play Connect 4 online against the computer or a friend. Drop tokens, plan your moves, use undo, switch difficulty, and try to connect four in a row.

Play a fast 30-second Whack-a-Mole game in your browser. Tap moles as they pop up, build your score, and use sound or dark mode controls for a quick arcade challenge.

Play a fast clue-based word guessing game where hints appear one by one. Choose a category, difficulty, or endless mode, then build your score, streak, and accuracy.

Play a clean, responsive 15-Puzzle sliding tile game. Shuffle the board, move numbered tiles into order, track your moves and time, switch themes, and share your solved result.

Play 2048 online with smooth swipe controls, score tracking, dark mode, and sound effects. Merge tiles, plan your moves, and try to reach the 2048 tile.

Play a browser-based escape room puzzle game with themed rooms, hidden clues, layered locks, notes, hints, scoring, timers, and replayable room variations.

Play a classic Hangman word guessing game with difficulty levels, hints, sound controls, and a clean keyboard-based interface.

Play a fast, focus-based paddle juggling game where you keep bouncing colorful items, build combos, protect your lives, and adjust the challenge with Zen, Classic, or Pro difficulty modes.

Solve logic grid mysteries by using clues, marking yes/no possibilities, checking errors, getting hints, and tracking your puzzle progress.

Play a polished Memory Match card game with emoji pairs, a timer, move counter, sound effects, and light/dark mode. Flip cards, find matching pairs, and try to complete the board in fewer moves.

Play a polished Minesweeper puzzle game with easy, medium, and hard levels, mobile-friendly controls, timer, flag mode, sound effects, dark mode, and shareable victory results.

Play Neon Snake, a fast browser snake game with glowing visuals, three difficulty levels, mobile controls, score tracking, pause, sound, and light/dark mode.

Play Sudoku, Calc Cage, number sprints, and sequence puzzles in one polished brain-training hub with timers, hints, notes, progress stats, and light/dark mode.

Play a polished Tic Tac Toe game with single-player AI, two-player mode, smooth animations, sound effects, and light or dark theme support.

Play a polished 3D Tower of Hanoi puzzle game with draggable disks, multiple difficulty levels, move tracking, timer, sound effects, and light/dark mode.

Slide cars and trucks around a 6x6 grid to clear the red car’s escape lane in this Traffic Jam logic puzzle with multiple challenge levels, hints, and solution preview.

Play a clean, mobile-friendly word search puzzle with random words, drag selection, sound effects, dark mode, and a fresh challenge each time.

Help kids practice reading with read-aloud stories, word highlighting, simple quizzes, and adjustable reading settings in a friendly browser-based reading companion.

Practice quick addition and subtraction by popping the balloon with the correct answer in this fun, kid-friendly math game.

Turn any photo into a kid-friendly jigsaw puzzle. Choose a gallery image, upload or paste your own picture, pick a difficulty, then drag pieces into place.

Practice writing letters from A to Z with a fun, interactive alphabet tracing canvas for kids. Choose colors, adjust brush size, undo strokes, clear the canvas, and switch between light and dark mode.

Explore animal cards with quick facts, habitat filters, favorites, search, and a surprise button for fun wildlife discovery.

Create print-ready classroom worksheets, packets, flashcards, answer keys, word work, and cross-curricular activities with customizable topics, difficulty, layout, and paper options.

Interactive clock learning game where kids drag the hour and minute hands to match a target time and practice reading analog clocks.

A fun connect-the-dots drawing game with 35 picture levels, numbered dots, cheerful sounds, dark mode, and kid-friendly touch controls.

A colorful counting game for young kids. Count the objects, pick the right number, and build early math confidence with cheerful levels, sounds, and rewards.

Practice fractions with a fun pizza-slice game. Choose the correct number of slices, check your answer, earn points, and learn visually with instant feedback.

A colorful alphabet learning game where kids click letters A to Z to see matching words, emojis, uppercase and lowercase letters, and hear each letter phrase spoken aloud.

Practice mental math with timed drills, accuracy challenges, streaks, progress tracking, skill stats, daily practice, and mobile-friendly answer controls.

Play a simple responsive mini piano in your browser with touch-friendly keys, note labels, sound controls, and light/dark mode.

Practice real-life money skills with an interactive counting game for coins, bills, change, shopping budgets, progress tracking, and printable worksheets.

Explore the solar system with an interactive planet clicker featuring planet facts, quizzes, missions, comparisons, audio read-aloud, and a collectible space passport.

A colorful shape matching game for kids with 10 levels, drag-and-drop play, fun sounds, dark mode, and mobile-friendly controls.

Practice spelling, vocabulary, listening, and word-building with daily challenges, progress tracking, missed-word review, and a searchable word library.

Practice spelling by dragging letter tiles into the correct order using helpful word clues, difficulty levels, audio controls, and a clean light or dark theme.

Play a colorful virtual xylophone with touch, mouse, or keyboard controls. Includes bright note bars, realistic tones, mute control, and light/dark themes.

Run API requests in bulk, replace variables from tabular input, map JSON responses into clean result tables, and export results as CSV or JSON.

Find baby name ideas across cultures, origins, languages, meanings, styles, and traditions. Filter names, save favorites, and export a family shortlist.

Compare and merge code in a private browser workspace with side-by-side diffs, unified patch export, search, and merge controls.

Query Excel and CSV files with SQL directly in your browser. Upload a spreadsheet, preview the data, run SQL queries, and export results without setting up a database.

A browser-only fraud awareness toolkit that helps users check suspicious messages, learn scam warning signs, build a safety action plan, and save local incident notes.

Compress, resize, crop, convert, watermark, and enhance images directly in your browser with no server uploads.

Create professional branded invoices in your browser with line items, taxes, discounts, payments, local saving, and print-to-PDF support.

Edit, annotate, sign, merge, split, rotate, reorder, watermark, and export PDFs directly in your browser with Private PDF Studio. Your files stay local for a faster, more private document workflow.

Convert salary to hourly pay and estimate weekly, monthly, annual, and take-home income with flexible work hours, tax rate, deductions, and reverse salary calculations.

Run a practical SEO audit for any public page, including metadata, technical health, accessibility basics, security headers, content signals, and optional same-site crawl checks.

Calculate room square footage and estimate material costs for flooring, paint, mulch, and other home projects with waste, tax, labor, and package-size options.

Convert images into clean SVG line art for coloring pages, printables, crafts, and design projects with presets, preview tools, and export options.

Create high-impact thumbnails in your browser using smart templates, custom titles, subtitles, image uploads, paste support, landscape or portrait formats, and high-resolution PNG downloads.

Generate downloadable text-to-speech audio in your browser using your own API key for OpenAI, Google Cloud, Gemini, ElevenLabs, or Azure Speech.

Create printable quote wall art with curated templates, editable typography, color palettes, photo backgrounds, live preview, saved layouts, and high-res PNG or PDF export.

Compare renting vs buying a home using mortgage, rent, ownership costs, appreciation, investment return, and year-by-year net worth projections.

Calculate compound interest, investment growth, recurring contributions, inflation-adjusted value, ROI, annualized return, profit, and break-even targets in one clean finance calculator.

Plan household income, expenses, savings goals, category budgets, and family spending in a private, responsive budget dashboard with light and dark mode.

Estimate home affordability, monthly mortgage payments, debt ratios, cash needed upfront, and amortization details with a smart mortgage planning calculator.

Learn chord progressions with audio playback, Roman numerals, quizzes, custom progression building, daily challenges, and practice tools for songwriting and music theory.

Practice notes, intervals, chords, pitch direction, and short melodies with a browser-based ear training coach that tracks score, streaks, progress, and achievements.

Learn music theory with interactive lessons, playable piano tones, scale and chord builders, interval practice, quizzes, daily challenges, and achievement tracking.

Learn piano online with an interactive keyboard, note practice, chord trainer, scales, songs, ear training, rhythm coach, and progress tracking in one standalone browser app.

Practice sight reading with treble, bass, and ledger-line note challenges. Choose difficulty levels, timed rounds, daily challenges, note buttons, or keyboard mode while tracking your score, streaks, accuracy, and achievements.

Learn guitar in your browser with an interactive fretboard, note finder, chord library, scale explorer, strumming drills, and local progress tracking.

Learn English through short stories made for French speakers. Listen with English TTS, click words for French meanings, take quizzes, and track progress by level.

Learn English through short stories with Hindi word meanings, English voice playback, quizzes, reading progress, and beginner-to-advanced story levels.

Learn English through short stories with English audio, clickable Spanish word meanings, level-based reading practice, quizzes, and saved progress.

Learn French through short stories with French audio, clickable word meanings, quizzes, reading progress, and level-based story practice.

Practice French vocabulary with interactive flashcards, audio playback, category filters, auto-flip study sessions, and optional JSON deck import.

Practice French animal vocabulary with a fun MCQ quiz featuring instant feedback, hints, pronunciation, score tracking, mistake review, and light/dark mode.

Practice French body parts with an interactive MCQ quiz featuring instant feedback, pronunciation support, score tracking, missed-word review, and light/dark mode.

Practice French numbers with a fast, interactive multiple-choice quiz. Choose number ranges, hear pronunciation, get hints, review mistakes, and improve your score.

Practice French verb conjugations with a mobile-friendly MCQ quiz, instant feedback, hints, progress tracking, weak-verb review, and light/dark mode.

Practice essential French words with a clean multiple-choice quiz. Choose topics, difficulty, quiz direction, and question count while tracking your score, streak, and missed words.

Learn Hindi vowels and consonants with interactive flashcards, pronunciation practice, quiz mode, and guided Devanagari tracing in a clean mobile-friendly app.

Practice Hindi vocabulary with category-based flashcards, Hindi audio, auto-flip review, and optional custom JSON deck import.

Practice Spanish with short level-based stories, Spanish audio playback, clickable word meanings, quizzes, and saved reading progress in a clean standalone reader.

Practice Spanish vocabulary with flashcards, category filters, audio pronunciation, auto-flip sessions, and optional JSON deck import.

Test your general knowledge with a customizable quiz across Geography, Science, History, Technology, Literature, Business, and everyday topics. Choose your category, question count, and quiz mode, then review your score and best result.

Practice logical reasoning with number series, syllogisms, analogies, directions, coding-decoding, clocks, calendars, and more in a fast interactive quiz.

Math Dojo is a kid-friendly arithmetic practice game with timed drills, XP belts, difficulty levels, and targeted weak-spot review for addition, subtraction, multiplication, and division.

Step into the dojo and sharpen your arithmetic skills with this fast-paced mental math trainer. Customize your operations and difficulty level—from Beginner to Ninja Master!

Practice multiplication facts with a clean, mobile-friendly times tables app featuring quizzes, speed rounds, hints, progress tracking, review questions, and light/dark mode.

Find baby name ideas using Janma Nakshatra and Pada. Calculate from birth details or enter a known Nakshatra, explore traditional starting syllables, filter 4,521 names, save favorites, and export a family shortlist.

Generate a detailed browser-only Vedic Kundli with birthplace search, planetary positions, D1/D9 charts, Panchang, Nakshatra details, Manglik indication, life readings, and Vimshottari Mahadasha timeline.

Calculate traditional Kundli wedding compatibility using birth date, time, place, Vedic sidereal charting, Guna Milan, Nakshatra, Rashi, Manglik Dosha, Panchang details, and exportable reports — fully in your browser.

Calculate Manglik Dosha using birth details, local city autocomplete, Mars checks from Lagna, Moon, and Venus, severity scoring, compatibility comparison, charts, and export options.

Find your sidereal Moon sign, Janma Nakshatra, Pada, naming syllables, birth Mahadasha lord, lunar phase, and Vedic astrology interpretation from birth date, time, and place.

Calculate daily Panchang details for any date and birthplace, including Tithi, Nakshatra, Yoga, Karana, Vara, Paksha, Rashi, lunar phase, and exportable reports.

Discover career fields that match your personality, interests, values, and strengths with a guided quiz for teens and young adults.

Explore everyday chemistry through interactive cards, quick quizzes, and simple explanations for food, cleaning, weather, soap, rust, bubbles, and more.

Track feeds, sleep, diapers, routines, health, growth, and milestones with daily summaries, timers, history, and offline backups.

Plan family events, routines, chores, meals, school reminders, and grocery lists in one simple browser-based family planner.

Create printable family routine, chore, allowance, and reward charts with templates, points, goals, rewards, and digital progress tracking.

Plan seasonal home upkeep, track repair costs, set reminders, save trusted contacts, and print a yearly maintenance schedule for your household.

Explore Ayurvedic home remedy guides by condition, dosha, diet, lifestyle, and safety notes. Search, filter, save favorites, and keep personal wellness notes.

Plan daily calories, macros, meals, and simple progress check-ins with a private browser-based calorie planner.

Estimate your diabetes risk, heart age, BMI, waist risk, and key health indicators with a private, easy-to-use screening tool.

Track daily medicines, scheduled pill times, taken checkboxes, and local browser reminders in a clean, touch-friendly medication log that works in your browser.

Explore natural wellness guides, daily routines, habit tracking, care journaling, and urgent red-flag reminders in a privacy-friendly self-care companion.

Create a weekly workout plan, add exercises by muscle group, track sets, reps, weight, and mark daily progress in a clean mobile-friendly planner.

Explore simple, fun physics cards that explain motion, light, sound, heat, electricity, magnets, and everyday objects.

Plan kids’ summer activities, routines, chores, learning goals, exercise, family time, and fun events with a clean calendar-based summer planner.

Plan parties and events with a private dashboard for guests, RSVPs, budget, menu, tasks, timelines, and printable event plans.

Create polished promo videos from real screen recordings with captions, device frames, voiceovers, camera motion, backgrounds, music, and Remotion MP4 rendering.

Create professional AI-powered video captions locally with live preview, MP4 burn-in, subtitle exports, presets, and batch rendering for creators.

Calculate the final exam score you need, test grades, weighted class grades, and GPA in one clean, mobile-friendly tool.

Estimate how many minutes your essay, script, or presentation will take to read aloud using adjustable speaking speeds and live word-count timing.