Generate sounds across a wide frequency range to test hearing, tune instruments, or experiment with audio. Easily select frequencies with a slider, adjust volume, and play tones.
4.4(31 ratings)
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4.3 avg rating
9 free apps
Updated July 2026
Whether you want more options like BTC or a completely different take on the same concept, our curated list of 14+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.
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Transform images of sheet music into playable digital formats. Practice along with the converted music using interactive features. This tool aids musicians in learning and performing pieces.
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UltimateScale
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Virtual ANS 3
by Alexander Zolotov
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This app simulates a unique photoelectronic musical instrument, allowing users to draw music as spectrograms. It functions as a graphics editor to convert sound to images and vice versa, enabling the creation of atmospheric sounds and microtonal music.
Unlimited pure tone generatorsSonogram editor for drawing and playing spectraConvert sound to image and vice versa
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Pythagorean Tuning Keyboard
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APTuner
Chromatic Tuner
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This application provides highly accurate chromatic tuning for a wide range of instruments. It features a clear interface, customizable settings, and the ability to detect note deviations with precision.
Automatic note and cent deviation detectionAccurate to 1/1000 semitoneHigh contrast, high visibility UI
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Trombone Slide Position Chart
How To Play Trombone Notes
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Master trombone slide positions with this interactive guide. Features include a metronome, tuner, quiz, and virtual instrument to help musicians of all levels improve their playing.
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Coherence Tuner
Polyphonic Instrument Tuner
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This app offers a revolutionary polyphonic tuning engine for multiple instruments. It provides accurate, strobe-like pitch detection for all strings simultaneously, with auto gain and noise elimination for a simple, plug-and-play experience.
Polyphonic tuning engineStrobe tuner accuracyMulti-mode display
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