EQSweep is a free, beta Android app that lets users fine-tune their headphones — including Google Pixel Buds, by listening to real-time frequency sweeps instead of guessing with sliders or presets. It’s not a Google product. It’s not bundled with any device. And it’s not on the Play Store yet.
But it’s already changing how people hear their earbuds. The app works by playing a continuous sine wave that sweeps across the full audible range (20 Hz to 20 kHz). As the tone moves, users listen for frequencies that sound unnaturally loud or faint, revealing peaks and dips in their headphones’ actual frequency response.
Those problem spots become editable bands: up to 10 per profile, each adjustable for gain, width, and center frequency. For Pixel Buds owners, that means fixing the default treble-forward signature without flattening vocals or gutting bass. One Android Police tester used it to tame upper-mids, then saved a second profile for bass-heavy tracks like Run The Jewels.
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