Games 27
Mancala
Two-player seed-sowing board.
Simon Says
Color memory sequence, replay growing pattern.
Tic Tac Toe
Vs friend or AI, 3-in-a-row.
Reaction Test
Wait for green flash, tap Enter, measure ms.
Whack-a-Mole
Moles pop up in 3x3 grid, tap quickly.
Asteroids
Rotate ship, shoot rocks, wrap-around screen.
Space Invaders
Alien wave shooter, classic arcade.
Lights Out
5x5 toggle puzzle, turn all lights off.
Peg Solitaire
Classic 33-hole board, jump pegs.
Mastermind
Guess 4-color code in 10 tries.
Anagram Solver
Unscramble 5-letter words against clock.
Typing Speed
Type given phrase with D-pad letter picker, WPM score.
Slide Puzzle
15-puzzle, slide tiles to sort.
Tower of Hanoi
Move disc stack with 3 pegs.
Word Search
10x10 letter grid, find hidden words.
Pattern Recall
Watch grid flash, recreate pattern.
Memory Match
4x4 grid card flip pairs, timer score.
2048
Slide tiles, merge equal numbers, reach 2048.
Hangman
Word guess with 6 wrong attempts, category hints.
Minesweeper
8x8 minefield, flag cells with Enter+Up.
Blackjack
Hit/Stand vs dealer, basic 21.
Hi-Lo
Guess if next card is higher or lower.
Math Blitz
Solve 20 arithmetic problems against clock.
Tetris Mini
Falling tetrominoes, rotate with Up, soft drop with Down, line clears.
Breakout
Paddle bounces ball to clear brick wall. Left/Right paddle, Enter to launch.
Pong Solo
AI opponent paddle. First to 11 wins.
Snake
Classic snake with growing tail, D-pad steering, high-score board.
Productivity 28
Stopwatch
Lap timing, split history.
Countdown Timer
Set hh:mm:ss with D-pad, big readout.
Reading List
Add URLs from voice, mark read.
Eisenhower Matrix
Quadrant tasks, urgent/important.
Time Zone Converter
Pick source/target zone, hour slider.
Daily Standup
Yesterday/Today/Blockers template prompts.
Time Tracker
Start/stop timer per project, daily totals.
Tip Calculator
Bill amount + tip% + split count.
Currency Converter
Static rates table, offline.
Calculator Basic
Big-button arithmetic for D-pad.
Calculator Scientific
Trig, log, exp, memory.
Pace Calculator
Running pace, distance, time.
Mortgage Calc
Principal, rate, years → monthly.
Loan Splitter
Split bill among friends with shares.
Deadline Countdown
Days/hours until date, multiple events.
Habit Tracker
Daily check-ins, streak count.
Water Intake
Log cups, daily goal progress.
Gratitude Journal
Daily 3 things prompt, history.
Mood Log
1-5 mood emoji, monthly heatmap.
Focus Mode
Big timer + ambient counter (45 min default).
World Clock
Five city dial, daylight indicator.
Meeting Cost
Headcount × avg salary × duration in real-time.
Expense Tracker
Quick category amount entry, daily sum.
Tax Withholding
Gross to net Polish PPK/ZUS estimate.
Invoice Mini
Single-line invoice generator, copy to clipboard.
BMI Calculator
Height/weight → BMI + category.
Calorie Estimator
TDEE from age/weight/activity.
Pomodoro Timer
25/5 work-rest cycles, audible chime.
Utilities 30
Hash Generator
MD5/SHA-256 client-side from text.
JSON Viewer
Paste JSON, pretty-print, expand/collapse.
HTTP Status
Reference for all HTTP codes with meaning.
HTTP Verbs
GET/POST/PUT/DELETE quick reference.
CSS Color Names
Browse 147 named colors with swatches.
Markdown Reference
Common syntax cheat sheet.
Git Cheat Sheet
Top 30 git commands with use.
Keyboard Layout
QWERTY/Dvorak/Colemak visual reference.
File Size Convert
Bytes/KB/MB/GB/TB.
Flashlight White
Solid white fullscreen with brightness control.
Color Picker
HSL slider, copy hex.
Random Color
Tap for new color + palette suggestion.
Dice Roller
1-100 dice, multiple at once, history.
Coin Flip
Animated 3D flip, heads/tails tally.
Decision Wheel
Spin wheel with custom options.
Password Generator
Length, charset toggles, strength bar.
Base64 Encoder
Encode/decode strings.
URL Decoder
Encode/decode URL components.
Regex Tester
Pattern + input → highlight matches.
Lorem Ipsum
Generate N paragraphs.
QR Display
Type text → render QR code via canvas.
Color Contrast
Foreground/background → WCAG ratio.
Screen Ruler
On-screen pixel ruler with units.
Magnifier
Camera-style zoom (fake demo) or text-zoom.
ASCII Art Maker
Type text → big ASCII letters.
UUID Generator
Generate v4 UUIDs in bulk.
Roman Numeral
Decimal ↔ roman converter.
Morse Encoder
Text ↔ morse, flash output.
Binary Converter
Dec/hex/bin/octal flip.
IP Info
Show your IP from public API.
Info & Data 14
Random Joke
Joke API, dad jokes.
Weather Now
Open-Meteo current conditions + 3-day forecast.
News Headlines
Top headlines from public RSS feed.
ISS Tracker
Live position of International Space Station.
NASA APOD
Astronomy Picture of the Day.
Moon Phase
Current phase + next full/new moon.
Sunrise Sunset
Today's times for your location.
Tides Today
Tidal chart for coastal city.
Earthquake Monitor
USGS recent magnitude 4+ quakes.
Air Quality
OpenAQ AQI for your city.
Crypto Top 10
CoinGecko prices for top 10 coins.
Wikipedia Random
Random article excerpt, swipe for next.
Dictionary Lookup
Free Dictionary API, definitions.
Quote of the Day
Famous quotes API, daily rotation.
Health & Fitness 20
HIIT Timer
20s work / 10s rest tabata loop.
Breathing 478
Inhale 4s, hold 7s, exhale 8s guided.
Box Breathing
4-4-4-4 square breathing visual.
Meditation Timer
5/10/15/20 min with bell.
Plank Timer
Countdown with form reminders.
Push-up Counter
Tap Enter per rep, set goals.
Jump Rope Timer
Round intervals with rest.
Stretch Sequence
5-minute desk stretch guided.
Posture Reminder
Every 20 min standing reminder.
Eye Rest 20-20-20
20-min cycle, look 20ft away 20s.
Walking Timer
Track walk duration, est. distance.
Heart Rate Zones
Calc zones from max HR.
Sleep Calculator
Bedtime → ideal wake (90-min cycles).
Caffeine Tracker
Log coffee, see half-life curve.
Standing Reminder
Hourly stand-up nudge.
Workout Picker
Random bodyweight exercise.
Yoga Pose Daily
Daily pose with hold instructions.
Hydration Log
Track water intake, goal bars.
Calorie Goal
Daily target tracker, deficit math.
Mood + Pain
Quick log of pain and mood for journaling.
Travel 15
Packing List
Templated by trip type, check off items.
Currency Converter Travel
Quick FX for vacation budgets.
Tip Culture Guide
Tipping % by country, common practices.
Phrasebook Spanish
50 essential travel phrases.
Phrasebook French
50 essential travel phrases.
Phrasebook Japanese
50 essential travel phrases with romaji.
Time Zone Pair
Home vs travel destination clocks.
Daylight Map
World map showing sun position now.
Airport Codes
IATA code lookup, search by city.
Metric Converter Travel
Quick mile↔km, F↔C, lb↔kg.
Jet Lag Plan
Recommended sleep shift schedule.
Visa Quick Check
Visa requirement table by country pair.
Travel Power Plug
Plug type by country.
Emergency Numbers
Police/ambulance/fire by country.
Trip Countdown
Days until trip with checklist.
Learning 20
Roman Numerals Quiz
Convert random numbers.
Capital Cities Drill
Country → capital reveal.
World Currencies
Country → currency code drill.
Chemistry Equations
Common reactions reference.
Flashcards Custom
Add cards, spaced repetition.
Periodic Table Quiz
Identify element by symbol.
Country Flags Quiz
Match flag to country.
Multiplication Table
1-12 times tables drill.
Math Facts Drill
Addition/subtraction/mult/div timed.
Vocab Builder
300 SAT-level words with definitions.
Morse Trainer
Hear/read morse, practice decoding.
Sign Language ABC
Static images of fingerspelling.
Music Note Trainer
Identify note on staff.
Guitar Chord Ref
Visual chord shapes browser.
Piano Keyboard Ref
On-screen keyboard with note labels.
Scales Practice
Major/minor scale notes display.
Circle of Fifths
Visual key relationships diagram.
Music Theory
Modes, intervals, common reference.
NATO Alphabet
Alpha Bravo Charlie reference + drill.
Phonetic Alphabet
IPA chart with audio (text only).
Sensors 15
Step Counter
Accelerometer-based pedometer.
Spirit Level
Bubble level using device orientation.
Digital Compass
Magnetometer heading with cardinals.
Head Tilt Game
Tilt head to dodge falling objects.
Shake to Roll
Shake glasses to roll dice.
Gyro Maze
Tilt to roll ball through maze.
Motion Snake
Steer snake with head tilts.
Tap Counter
Detect taps via accelerometer.
Jump Counter
Count vertical jumps via Y-axis.
Speedometer GPS
Current speed from geolocation.
Altitude Display
Elevation from GPS.
Compass Bearing
Show bearing to fixed point.
Pace Tracker
Walking pace from accelerometer.
Orientation Cube
3D cube rotates with head.
Posture Alarm
Alert when neck tilts too far.
Music 10
Metronome
BPM 40-240, tap-tempo, visual flash.
Tap Tempo BPM
Tap 4+ beats to detect BPM.
Drum Pad
8-pad drum machine with samples (Web Audio).
Tuner Reference
Show note frequency, listen mode.
Chord Progression
Common pop/jazz progressions.
Guitar Fretboard
Interactive fretboard, click for note.
Scale Generator
Pick key+mode → see scale notes.
Beat Sequencer
16-step grid, kick/snare/hat.
Tone Generator
Play pure tone at chosen Hz.
Pitch Trainer
Identify pitch by ear.
Fun & Random 11
Compliment Generator
Random kind compliment.
Knock Knock Joke
Joke setup + punchline reveal.
Random Name Picker
Add names, spin for one.
Yes No Oracle
Yes/No/Maybe random answer.
Color Mood
Pick mood → suggested color palette.
Random Wikipedia
Pull random article summary.
Pick a Number
1-100 random with weighting.
Eight Ball Polish
Magic 8-ball PL version.
Affirmation Daily
Positive daily affirmation.
Hypothetical Q
Philosophical thought experiment.
Magic 8 Ball
Shake or tap → cryptic answer.
Visuals 8
Mandala Viewer
Animated mandala via canvas.
Fractal Mandelbrot
Zoom into Mandelbrot set.
Particle Flow
Drifting particles, calming visual.
Lava Lamp
Blob simulation visual.
Plasma Effect
Classic demoscene plasma.
Matrix Rain
Falling green characters.
Lissajous Curves
Animated parametric curves.
Color Gradient Generator
Random gradient, hex copy.