A lightweight, mobile-friendly web application designed to help musicians practice interval recognition and visualization. The app displays musical intervals in a randomized, looped sequence, making it an ideal tool for fretboard training, mental visualization, or ear training drills.
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Custom Interval Selection: Choose exactly which intervals you want to practice (from
1up to7, including accidentals likeb3,b5,b7, etc.). -
Smart Distribution Loop: Uses a shuffling algorithm that guarantees you will be tested on every single selected interval exactly once per cycle before a new randomized cycle begins. This ensures balanced practice.
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Smart Transitions: Built-in safeguards prevent the exact same interval from appearing twice in a row during cycle transitions.
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Configurable Speed: Adjust the display timer from ultra-fast (0.1 seconds) up to relaxed (10 seconds).
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Responsive, Dark UI: Designed with a clean, dark-themed vertical layout optimized for both mobile phones on a music stand and desktop screens.
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Adjustable Font Sizes: Choose between 5 different font sizes to fit your screen and viewing distance perfectly.
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Launch the App: Open the web application directly in your browser using the provided link.
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Configure Settings:
* Select at least 2 intervals using the toggle buttons.
* Enter your preferred display time per interval (in seconds).
* Select a comfortable font size.
- Start Training: Click START to begin the automated training loop. Click STOP at any time to pause the loop and reset the screen.
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Built entirely as a standalone web app (
index.html) using HTML5, CSS3, and Vanilla JavaScript. -
Zero external dependencies or frameworks—runs completely client-side in any modern web browser.
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Utilizes the Fisher-Yates Shuffle algorithm to ensure completely unbiased and uniform random distribution across practice cycles.