Best Free Sound Booster Offline Apps

247+ iOS apps curated and reviewed

4.3 avg rating

20 free apps

Updated August 2026

Looking for free free sound booster offline apps? 20 of our 247+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Free Sound Booster Offline Apps (August 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	Louder Volume: Sound Booster	Free	4.4★ (81)	No	Yes	Sep 2026
2	Increase Volume: Sound Booster	Free	4.5★ (298)	No	Yes	Sep 2026
3	Extra Volume Booster	Free	4.7★ (1.5K)	No	Yes	Sep 2026
4	Volume Booster - Sound & Bass	Free	4.3★ (221)	No	Yes	Sep 2026
5	Boom: Bass Booster & Equalizer	Free	3.8★ (4.4K)	Yes	Yes	Sep 2026
6	Volume Booster – Sound Booster	Free	4.2★ (127)	No	Yes	Sep 2026
7	Musiboot: Get Lossless Music	Free	4.9★ (989)	Yes	No	Sep 2026
8	Music Booster: Sound Booster	Free	4.3★ (102)	No	Yes	May 2026

Top Picks for Free Sound Booster Offline

#1

Louder Volume: Sound Booster by Muhammad Rafly

Bass Booster & Audio Enhancer

Editor's Choice

4.4(81 ratings)

FreeIn-App Purchases

Louder Volume: Sound Booster screenshot 1

Louder Volume: Sound Booster screenshot 2

Louder Volume: Sound Booster screenshot 3

Louder Volume: Sound Booster screenshot 4

Amplify your device's audio with a volume and bass booster. Fine-tune your sound with a custom equalizer for clearer, more powerful music and video experiences. Enjoy immersive, high-quality audio adjustments.

#2

Increase Volume: Sound Booster by 安帮潘

Bass Booster Volume Equalizer

Strong Contender

4.5(298 ratings)

FreeIn-App Purchases

Increase Volume: Sound Booster screenshot 1

Increase Volume: Sound Booster screenshot 2

Increase Volume: Sound Booster screenshot 3

Increase Volume: Sound Booster screenshot 4

Amplify your device's audio for a richer listening experience. This app enhances sound quality for music, movies, and calls with powerful amplification and effortless control.

#3

Extra Volume Booster by 沄鱼

Boost Video & Audio Sound

Worth Considering

4.7(1.5K ratings)

FreeIn-App Purchases

Extra Volume Booster screenshot 1

Extra Volume Booster screenshot 2

Extra Volume Booster screenshot 3

Enhance your device's audio output with this powerful volume booster. It amplifies low-level audio files and weak microphone sounds to a higher quality, clearer, and stronger sound without distortion. Achieve significant volume enhancement and sound amplification.

More Free Sound Booster Offline apps to explore

Volume Booster - Sound & Bass

Volume Booster - Sound & Bass

Volume Booster - Sound & Bass

Audio Equalizer, Boost Speaker

Enhance your device's audio with this app, offering instant volume boosts and deeper bass for music, videos, and games. Customize your sound with a built-in equalizer and presets, compatible with headphones and speakers.

Volume booster for music, videos & callsDeep bass booster and sound amplifierMusic equalizer with customizable presets

free with in-app purchases

Boom: Bass Booster & Equalizer

Boom: Bass Booster & Equalizer

Boom: Bass Booster & Equalizer

Offline Music, Radio & Tidal

Enhance your music listening experience with advanced bass boosting and a customizable equalizer. Enjoy 3D surround sound, access streaming services like TIDAL, and stream thousands of radio stations and podcasts worldwide.

3D Surround SoundBass Booster16-band Custom Equalizer

free with in-app purchases

Volume Booster – Sound Booster

Volume Booster – Sound Booster

Volume Booster – Sound Booster

Bluetooth Music & EQ Tool

Enhance your audio experience with on-device volume, EQ, and bass adjustments. Connect to Bluetooth devices and explore advanced sound shaping with an offline Tone Lab. No sign-in or data collection required.

Bluetooth connectivityVolume, EQ, and bass adjustmentsOn-device audio processing

free with in-app purchases

Musiboot: Get Lossless Music

Musiboot: Get Lossless Music

Musiboot: Get Lossless Music

Volume Booster with HD Sound

Amplify your device's audio output by up to 500% for richer, lossless music and clearer sound. This app lets you exceed standard volume limits for an immersive listening experience, turning your phone into a powerful mini speaker.

Volume amplification up to 500%Enhances audio clarityLossless music playback

Music Booster: Sound Booster

Music Booster: Sound Booster

Music Booster: Sound Booster

Video & Audio Speaker Booster

Enhance your audio experience with this volume amplifier. It boosts sound and bass without distortion, making videos and audio clearer and more powerful. Adapt to various environments and enjoy automatic adjustments for your specific hearing needs.

Volume amplificationBass boostClearer audio

free with in-app purchases

Audio Booster: Booster

Audio Booster: Booster

Audio Booster: Booster

Audio Booster: Enhance Audio

Enhance your device's audio with a professional-grade volume booster and sound amplifier. Fine-tune every frequency with a 7-band equalizer and a dedicated bass booster for an immersive listening experience. Customize the interface with vibrant themes and lighting controls.

Volume boosterSound amplifier7-band equalizer

Volume Booster: Bass Boost

Volume Booster: Bass Boost

Volume Booster: Bass Boost

EQ • Speaker Booster • Audio

Enhance your device's audio for music, movies, and games. This app amplifies sound beyond default limits, offering clearer and richer audio with a simple interface. Customize settings for a more immersive listening experience.

Boost volume instantlyClear and powerful sound enhancementSmart audio control with bass and treble tuning

free with in-app purchases

Bass & Volume Boost: Booster

Bass & Volume Boost: Booster

Bass & Volume Boost: Booster

Enhance Audio Output!

Amplify your audio and enhance bass with this music companion. It offers a powerful music player with advanced equalizer controls, playlist creation, and offline listening capabilities. Tailor your sound experience to perfection.

Sound BoosterVolume BoosterAdvanced Music Player

Volume Booster | Boost Bass

Volume Booster | Boost Bass

Volume Booster | Boost Bass

Extra Speaker, Sound, Music

Amplify audio and video files to make them louder and clearer. Increase volume by up to 1000% for a richer sound experience. Export enhanced files without quality loss.

Volume boosting up to 1000%Bass enhancementImport audio/video files

Sound Booster: Volume Booster

Sound Booster: Volume Booster

Sound Booster: Volume Booster

Louder Volume, Speaker Sound

Amplify bass volume and enhance sound clarity for a superior audio experience. Play music from your library or Apple Music, and boost the volume of all media, including audio and video files. Adapt sound settings to different environments for optimal listening.

Amplify bass volumeImprove sound clarityBoost all media volume

Max Volume Booster & Louder

Max Volume Booster & Louder

Max Volume Booster & Louder

Amplify & Enhance Sound

Amplify your device's audio output for headphones and speakers, and play local music files directly within the app. Enjoy louder, clearer sound with an integrated music player for a seamless listening experience.

Maximize phone volume beyond default settingsBoost audio for Bluetooth speakers and headphonesSync and play local music files

free with in-app purchases

Volume Booster: Bass Sound

Volume Booster: Bass Sound

Volume Booster: Bass Sound

EQ, Speaker & Headphone Boost

Enhance your audio experience with this app, offering powerful volume and bass boosting capabilities. Fine-tune your sound with an advanced equalizer and immersive 3D surround effects. Enjoy customizable presets and convenient home screen widgets for instant control.

Powerful volume booster up to 200%Deep bass booster with adjustable intensity5-band and 10-band equalizer

free with in-app purchases

Bass & Volume Booster - BassUp

Bass & Volume Booster - BassUp

Bass & Volume Booster - BassUp

Music Equalizer. Sound Boost

Enhance your audio with this app, designed to significantly increase volume and intensify bass. It offers a range of equalizer settings, allowing you to customize sound profiles for music, podcasts, and videos to create a more immersive listening experience.

Volume enhancementBass boostCustomizable equalizer settings

Max Volume Booster: Bass EQ

Max Volume Booster: Bass EQ

Max Volume Booster: Bass EQ

Headphone & Speaker Boost

Bass Booster and Volume Boost

Bass Booster and Volume Boost

Bass Booster and Volume Boost

Equalizer & Sound Amplifier

Amplify your audio with deep bass, a 10-band equalizer, and immersive 3D surround sound. Customize treble, reverb, and echo for a personalized listening experience across music, movies, and games. Unlock premium features with a subscription.

Deep Bass Boost10-Band Equalizer3D Surround Audio

Max Sound Booster: Boost Music

Max Sound Booster: Boost Music

Max Sound Booster: Boost Music

Equalizer Music, Audio, Video

Enhance your audio and video files with this powerful volume booster. Easily increase sound levels up to 1000% to enjoy louder music and clearer dialogue. Select your file, set the desired volume, and experience amplified sound.

Boost volume up to 1000%Amplify audio filesAmplify video files

Speaker Volume: Bass Booster

Speaker Volume: Bass Booster

Speaker Volume: Bass Booster

Audio Equalizer, Video Sound

Enhance your audio experience by amplifying the volume of videos and music up to 1000%. This app offers high-quality sound boosting and bass adjustment for your media files, allowing for offline listening.

Volume amplification up to 1000%High-quality sound boostingBass boost for music

FAQ about Free Sound Booster Offline

What are the best free sound booster offline apps for iPhone?

Louder Volume: Sound Booster tops our free sound booster offline apps ranking as of August 2026, with a 4.4-star average from 81 App Store ratings, and it's free to download.

Does Louder Volume: Sound Booster have ads or in-app purchases?

Louder Volume: Sound Booster has no ads and offers in-app purchases, according to its App Store listing as of August 2026.

How many free sound booster offline apps are on the App Store?

We track 247+ free sound booster offline apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.

What is Louder Volume's primary function?

Louder Volume is designed to amplify your device's audio beyond default limits, enhance bass frequencies for a more powerful sound, and allow custom audio tuning through an equalizer.

How much does Louder Volume cost?

The app offers a subscription model with weekly, monthly, and yearly plans. Weekly subscriptions are $3.99, monthly are $9.99, and yearly are $29.99. A 3-day free trial is included with the weekly plan.