Lo‑Fi Music Player - Online Focus & Study Beats
Play a selection of local lo‑fi tracks (embedded). Simple UI with play/pause. No copyright issues. Stay focused.
UD5 Toolkit
Play a selection of local lo‑fi tracks (embedded). Simple UI with play/pause. No copyright issues. Stay focused.
Set a custom YouTube or Spotify playlist URL that auto‑plays when your focus session starts and pauses on breaks. Combine productivity with your favorite tunes.
Listen to two notes and identify the interval. Purely local Web Audio synthesis. Sharpen your relative pitch.
Visually design a custom :focus‑visible outline style. Copy the CSS. Better than the default.
Mix multiple ambient sounds (rain, fireplace, coffee shop) to create your perfect productive background.
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.
Generate continuous white, pink, or brown noise for sleep or concentration. Adjustable volume with offline support via Web Audio API. No downloads needed.
Design a custom focus indicator with outline, offset, and box‑shadow. Preview on interactive elements. Copy the CSS.
Enter a URL and see a visual map of the tab order. Detect broken tabindex values. Improve keyboard navigation.
Pomodoro timer that saves completed sessions to localStorage. View daily/weekly stats. Boost productivity with data.
Play a simple monophonic synthesizer with your keyboard. Choose waveform, attack, decay, and filter. For music fun.
Get a random chord progression (e.g., I‑V‑vi‑IV) with a suggested key. Play with built‑in piano sounds. For songwriters.
Full‑screen random colour changes at a slow pace. Use it as a dynamic background for meditation or focus.
Set three big tasks for the week, top priority, habit trackers, and notes. Print or screenshot. Minimalist.
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.
Combine a Pomodoro timer with a built‑in to‑do list. Estimate pomodoros per task, track completed sessions, and see daily progress. All data stored locally.
Enter a URL and extract tab‐index order violations and focusable elements. Quick accessibility audit. Client‑side fetch.
Play reference pitches for standard ukulele tuning. Also works for baritone and other variations. Simple and local.
Click a root key and chord type (Maj, min, 7th) to see the notes highlighted on a piano keyboard. Learn chords fast.
Generate a random band name, album title, and cover art description. Perfect for music inspiration. Click to refresh.
Create binaural beats by setting base frequency and beat frequency. Use headphones. For relaxation or focus. Web Audio API.
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.
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.
Combine a Pomodoro timer with a simple task list. Assign estimated Pomodoros to tasks and track completions. Boost focus and get things done.
Boost your productivity with the Pomodoro technique. Customizable work and break intervals with desktop notifications. Simple, clean, and works offline.