Volume Booster & Equalizer

Volume Booster & Equalizer makes your music, movies, audiobooks and podcasts sound louder and clearer - with an honest, hardware-safe loudness enhancer and a full 5-band equalizer.

Tired of quiet speakers or flat sound? Volume Booster & Equalizer uses Android's built-in audio engine (Loudness Enhancer, Equalizer, Bass Boost, Virtualizer and Reverb) to enhance the sound of every app that plays media: music players, YouTube, streaming, games and video calls.

Everything is grouped into three tabs - Boost, Tune and Extras - with the master switch pinned above them, so no control is more than a tap away.

★ VOLUME & LOUDNESS BOOST
• Increase media loudness by up to +15 dB with the system Loudness Enhancer
• One simple slider - boost the sound of your speaker, headphones or Bluetooth
• Safety zones: green below 60%, amber up to 85%, red above - with a warning before you go loud
• Media volume control right inside the app

★ ONE-TAP SOUND MODES
• 8 modes: Flat, Music, Bass, Vocal, Movie, Game, Outdoor and Night
• Each mode sets the equalizer, bass, virtualizer and reverb together
• Touch any slider and the mode steps aside - your hand tuning always wins

★ 5-BAND EQUALIZER
• Precise vertical sliders for lows, mids and highs
• 15 built-in curves that sound the same on every device
• Music presets: Normal, Classical, Dance, Flat, Folk, Heavy Metal, Hip Hop, Jazz, Pop, Rock (device presets)
• Create and keep your own custom sound curve
• Save multiple presets with your own names and switch in one tap
• Your settings are saved and restored automatically

★ BASS BOOSTER
• Deep, punchy bass for music and movies
• Smooth strength control from subtle to strong

★ VIRTUALIZER (3D SURROUND) & REVERB
• Wider, more spacious stereo image on headphones
• Reverb from small room to concert hall
• Great for movies and live recordings

★ SLEEP TIMER & OUTPUT PROFILES
• Sleep timer fades the volume down over 10 seconds, then switches the effects off
• Speaker, wired headphones and Bluetooth each keep their own preset and boost level
• Optional: switch the effects on by themselves when music starts playing

★ WORKS EVERYWHERE
• Applies to the global audio output - works with your favorite music player, video apps and games
• Keeps running in the background with a small notification, so your sound stays boosted
• Lightweight, fast, no account and no sign-up

★ TELLS YOU WHERE IT REACHES
• "Which players get the effects" lists the players that announce their own audio session — those get the effects applied directly to them
• Everything else goes through the global session, and the app says so instead of promising it works with every app
• The list never leaves your device and can be cleared any time
• Each output now remembers its volume level too, under the headphone safety limit

★ QUICK CONTROLS
• Home-screen widget for one-tap boost
• Quick Settings tile and notification controls — adjust without opening the app
• Headset auto profile — your headphone preset applies automatically when you plug in
• Three themes: dark, true-black AMOLED and light

★ FREE TO START · PREMIUM
• Core Boost, Tune and Extras controls are free
• Unlock selected advanced controls for 24 hours with Boost Points or an optional rewarded Unity Ads video
• Premium unlocks all Premium controls and removes full-screen ads. Monthly, yearly (3-day trial where offered) and lifetime plans are available through Google Play Billing
• Free users see Unity Ads only; AdMob and banner ads are disabled

★ SAFE & TRANSPARENT
Uses official Android audio effects only. The app cannot exceed your hardware limits and warns before levels that may damage speakers or hearing. Audio is processed on-device; nothing is recorded or uploaded. Firebase Analytics and Crashlytics are optional in Settings.

Note: on a small number of devices the manufacturer's own audio processing may limit some effects. The app will tell you and the remaining effects will keep working.

Recent changes:
Fixes a crash that could happen at launch on some devices. Smoother startup and better background stability.