Music Volume Booster: Bass EQ

Make your music louder — really louder. Boostbox is a music player with a boost dial that adds up to +6 dB of true gain (that's 200%), a 10-band equalizer, and a live spectrum, so quiet tracks finally hit as hard as the rest of your playlist. Most volume booster apps promise 400% or system-wide magic they can't deliver. Boostbox does it the honest way: real gain applied to music played inside the app. Import your files, turn the dial, hear the difference in seconds — while a built-in limiter catches the boosted peaks so louder never turns into distorted. WHAT YOU GET • That quiet old MP3 finally plays as loud as everything else — boost dial from 0 to 200%, up to +6 dB of real gain • Bass you can feel on flat-sounding tracks: 10 bands from 32 Hz to 16 kHz with Bass Boost, Vocal, Rock, and Flat presets • Your own sound saved as Custom — drag any band and the curve is yours • A spectrum that moves with the actual audio — 24 bars driven by a real FFT analysis, not a canned animation • Music keeps playing with the screen off — background playback with play, pause, skip, and seek • Import songs from the Files app and remove them anytime; five built-in tracks let you test the dial before adding your own PERFECT FOR • Commuters whose earbuds can't compete with the train • Anyone with a folder of old MP3s mastered quieter than modern streams • Bass heads who want the 32 Hz band to actually show up • Listeners who need vocals lifted above the mix without touching the bass WHY NOT JUST USE THE VOLUME BUTTONS? The volume buttons stop at 100% of what the file gives them — a quietly mastered track stays quiet. Boostbox adds gain to the audio itself, up to +6 dB on top, then limits the peaks so it stays clean. To be clear: the boost applies to music played inside Boostbox, not to other apps or your whole phone. PRIVATE BY DEFAULT Your music stays on your device. No account, no uploads, no tracking of what you listen to. An optional daily reminder is the only notification, and only if you turn it on. FULL ACCESS Boostbox Pro unlocks boost beyond 100% (up to 200% / +6 dB), the Bass Boost, Vocal, and Rock presets, and the full custom 10-band equalizer. Choose a Weekly or Yearly auto-renewing subscription, or a one-time Lifetime purchase. Prices are shown in the app before you pay; subscriptions renew until cancelled in your Apple ID settings. Download Boostbox, import one quiet track, and turn the dial past 100 — you'll hear the difference in ten seconds. Terms of Use (EULA): https://web-levi.web.app/terms Privacy Policy: https://web-levi.web.app/privacy-policy Questions? [email protected]