Bass Fretboard Trainer - Online Note Recognition Game
A random note name appears; click the correct position on the bass fretboard. Beat your time and accuracy.
UD5 Toolkit
A random note name appears; click the correct position on the bass fretboard. Beat your time and accuracy.
Load a WAV file and see its real-time oscilloscope trace and frequency spectrum. Zoom and pan. Pure frontend.
Enumerate all fonts installed on your device and see a realβtime preview. Useful for design tools. Permission required.
Apply a fisheye or barrel distortion to your photo with adjustable strength. Simulate extreme wide angle.
Enter a date and location (or use GPS) to see exact golden hour and blue hour times for perfect natural light.
Paste a Base64 encoded font string and generate the complete @fontβface CSS rule. Inline small fonts easily.
Select a tool (VS Code, Figma, etc.) and get random shortcut prompts. Press the keys to practice.
Practice mental arithmetic with customizable operators and digit count. Timed rounds, score tracking. Works offline. Improve your brain speed.
Divide pooled tips among staff based on hours worked or weighted percentages. Ensures fair distribution. Instant local calculation.
Random letters appear; you must type the correct code word quickly. Beat your high score. Learn the NATO alphabet.
Flashcards for learning Braille. See the dot pattern and type the letter. Track your speed and accuracy. Accessibility education.
Solve random arithmetic problems under a time limit. Track your score and improve mental calculation. No data collected.
A sequence of digits flashes for a few seconds. Type it back. Increase length. Improve your working memory.
Practice sending Morse code using a virtual straight key. Visual feedback and audio tone. Learn timing and proper fist.
See a random letter/number and tap the Morse sequence. Instant feedback. Practice the full international Morse alphabet.
Pick a scale (Major, Harmonic Minor, Dorianβ¦) and a root note. Shows the notes and highlights them on piano & guitar fretboard.
Click a root key and chord type (Maj, min, 7th) to see the notes highlighted on a piano keyboard. Learn chords fast.
Play a virtual piano keyboard using mouse or computer keys. Sustain and octave control. Record and play back your tune.
Fairly distribute pooled tips among staff based on hours worked or points. Customizable percentages. All calculations local and private.