Musical Interval Ear Trainer – Online Minor 2nd to Octave
Listen to two notes and identify the interval. Purely local Web Audio synthesis. Sharpen your relative pitch.
UD5 Toolkit
Albums, Birthdays & Events — discover what happened on this day in music
Listen to two notes and identify the interval. Purely local Web Audio synthesis. Sharpen your relative pitch.
Shows a random historical event that occurred on today's date. Fun daily knowledge snippet.
Select a key and build chord progressions (I-IV-V, etc.). Hear them played with simple piano sounds. Great for songwriting inspiration. Local audio synthesis.
Play a metronome with adjustable BPM, time signature, and subdivisions (eighth, triplet, sixteenth). Tap tempo and visual flash. Works offline for practice.
Set your birth date and see a live countdown with days, hours, minutes, and seconds. Shareable link. Pure frontend.
See famous people's life spans on a draggable timeline. Compare who was alive at the same time. Educational fun.
Pomodoro timer that saves completed sessions to localStorage. View daily/weekly stats. Boost productivity with data.
Play a selection of local lo‑fi tracks (embedded). Simple UI with play/pause. No copyright issues. Stay focused.
Full scientific calculator with history tape, memory keys, and unit conversions. All in your browser, no install.
Play a simple monophonic synthesizer with your keyboard. Choose waveform, attack, decay, and filter. For music fun.
Get a random heartfelt or funny birthday message to write in a card. Choose from various tones. Local.
Get a random chord progression (e.g., I‑V‑vi‑IV) with a suggested key. Play with built‑in piano sounds. For songwriters.
A small widget that records your clipboard text history (only while open). Search and re‑copy old snippets. No log upload.
See a list of notable historical events that happened on this day across years. Static data, no API needed.
Generate a random, somewhat meaningful song lyric line. Write your own hit with AI‑free randomness. All local.
Play a collection of retro 8‑bit synth pads and leads using your keyboard. Record sequences and export as WAV. Pure Web Audio API.
Get a random history fact or see what major events happened on this day. Curated from public domain sources. Local.
Play reference pitches for standard ukulele tuning. Also works for baritone and other variations. Simple and local.
Scroll through an interactive timeline of cameras from camera obscura to modern DSLR. Photos and facts.
Pomodoro timer with built‑in lo‑fi music playlist (synthetic). Focus and rest cycles. No copyright music; generated tones.
Click a root key and chord type (Maj, min, 7th) to see the notes highlighted on a piano keyboard. Learn chords fast.
Flip a coin and track your full history. See percentage of heads/tails and longest streak. Pure RNG, no bias.
Generate a random band name, album title, and cover art description. Perfect for music inspiration. Click to refresh.
A precise online metronome with adjustable BPM, beat emphasis, and time signature. Works offline. Essential for musicians.
Play a virtual piano keyboard using mouse or computer keys. Sustain and octave control. Record and play back your tune.
Lay down a beat on a grid sequencer for kick, snare, and hi-hat. Play, loop, and adjust tempo. All sound via Web Audio API.
Build a vertical timeline by entering events with dates and descriptions. Export as image or HTML. Perfect for project milestones.
Enter a song title and artist to find lyrics using public APIs. Quick preview and copy. A lightweight tool for music lovers.
Tap any key to the beat and get the BPM (beats per minute). Useful for DJs, musicians, and running. Simple and accurate.
Find your exact age in years, months, and days. Calculate the time until your next birthday. All date computations are performed locally and accurately.