# Volume Booster + Bass Booster — Music Speaker Amp & Boost DB

> Boost media volume and bass, convert audio/video formats, and enhance videos. (iPhone/iPad app by Best App Limited.)

- Source: https://appshunter.io/ios/app/volume-booster-plus-bass-booster/id1563914103 (this page in markdown: same URL + `.md`)
- Developer: [Best App Limited](https://appshunter.io/developer/1142280733)
- Category: Productivity, Music
- Price: Free with in-app purchases
- Rating: 4.38/5 from 2,391 App Store ratings · 47 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 54 MB
- Languages: English, Chinese
- Released: 2021-07-01
- Data updated: 2026-08-26
- Monetization: subscription
- User reviews in markdown: https://appshunter.io/ios/app/volume-booster-plus-bass-booster/id1563914103/reviews.md

## What is Volume Booster + Bass Booster?

** Do you want to boost your media sound volume? This app allows you to increase the volume of your music, video, audio, audiobooks, and voice files. Boost the volume by up to 1000%!
** The Powerful Bass Booster amplifies your bass and offers brilliant sound quality! 
** The Media Converter converts your audio and video files to nearly any major video or audio format!

Key Features: 

* Deep Bass Booster boosts bass by up to 200%. 
* Boost audio and video volume by up to 1000%.
* Boost the volume of all media, including audio and video files.
* Boost nearly any audio/video format: MP3, M4A, AAC, AIFF, mp4, MKV, MOV, AVI, etc.
* Lower or mute the sound of your audio/video file.
* Supports batch mode. 
* Convert nearly any video file to: 
MP4, MOV, GIF, OGG, WEBM, MKV (H.264), MKV (H.265), MPG, WMV, M2TS, AVI
* Convert nearly any audio file to: 
MP3, M4A, AAC, OGG, WAV, FLAC, WMA, AIFF, CAF, ADX, OPUS
* Stabilize shaky videos. 
* Add/Embed Music in your Video. 
* Add/Embed Subtitles in your Video. 
* Quick and Easy to Use. 
* Import audio/video files from Photos Library, Music Library, iCloud, or iTunes File Sharing. 
* Supported input formats include: 
MP4, MOV, GIF, OGG, WEBM, MKV (H.264), MKV (H.265), MPG, WMV, M2TS, AVI, MP3, M4A, AAC, OGG, WAV, FLAC, WMA, AIFF, CAF, ADX, OPUS, etc. 
* Export/Share your converted media files to other apps.
* AirDrop your converted files to other Apple devices. 
* Save your converted files to a local library or iCloud. 
* In-app File Browser: Search, Preview, Rename, and Delete your audio and video files. Sort by Name, Date, and Duration. 
* The built-in universal media player can play any audio or video format: 
MP4,AVI,MKV,RMVB,FLV,WMV,WAV,3GP,MOV,SWF,MPEG,MPG,VOB,M4V,RM,M2TS,ASF,WEBM,DAT,TS,ASX,MP3,F4V,OGV,DIVX,DV,GXF,M2P,MPEG1,MPEG2,MPEG4,MTS,MXF,OGM,QT,WM

How to Boost Volume or Convert to Other Formats: 
1. Tap the '+' button (at top left corner) to import your audio/video file. 
2. After you import the file, tap the file in the list view and select "Boost Volume". 
3. Choose the Volume Level and Output Format you want. 
4. For video conversion, you can also choose to stabilize your video, add music to your output video, or add subtitles to your output video. 
5. Finally, tap the "Boost Now" button to start the conversion. Once the conversion is complete, you can preview (playback) your boosted files or share them to another app or device easily.


Subscription: 

Payment will be charged to iTunes Account at confirmation of purchase. 
Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. 
Account will be charged for renewal within 24-hours prior to the end of the current period. The cost depends on the selected plan. 
Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. 
Any unused portion of the free trial will be forfeited when the user purchases a subscription. 

Terms: http://www.9bestapp.com/terms/
Privacy: http://www.9bestapp.com/resources/privacy-policy.html

## Key features

- Boost audio and video volume up to 1000%
- Deep bass booster up to 200%
- Convert audio/video to various formats
- Add music and subtitles to videos
- Stabilize shaky videos
- Batch processing for files
- Built-in universal media player

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| 1 Week Premium | $4.99 | per 7 days |
| 1 Month Premium | $9.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Premium | $14.99 | one-time |


## What do users think of Volume Booster + Bass Booster?

Overall sentiment: negative

**Pros**

- 👍 Great app
- 👍 Awesome
- 👍 Excellent
- 👍 Good
- 👍 Terbaik
- 👍 Bomb dot com

**Cons**

- 💰 Requires payment
- 💰 Everything is premium
- 🐛 No boost on iPhone
- 🐛 Doesn't work with streaming
- 🐛 Doesn't increase volume
- 🐛 Doesn't work as expected

**Commonly reported bugs**

- Doesn't work with Spotify
- Crashes
- Freezes on login screen
- Incompatible with older devices

**Most requested features**

- Allow importing multiple songs at once
- Allow boosting multiple tracks at once
- Allow playing all songs at once
- Remove payment requirement

## Recent user reviews (10 of 47)

All indexed reviews: https://appshunter.io/ios/app/volume-booster-plus-bass-booster/id1563914103/reviews.md

### 5/5 — Sarah

*2026-05-01, version 2.2.1*

Sarah

### 5/5 — Vega

*2026-02-27, version 2.2.1*

No

### 1/5 — Makes you pay

*2025-10-03, version 2.2.1*

Immediately makes you pay for it to work

### 5/5 — Yea

*2025-07-09, version 2.2.1*

Great

### 1/5 — No boost for iPhone!

*2025-07-05, version 2.2.1*

No boost on iPhone!

### 1/5 — Bad just bad

*2024-11-24, version 2.1.9*

Ok I want my Speaker to be loud but guess what I GOT TO PAY IM 16 MY PERSONAL IPAD IS NOT SPENDING ANY MORE MONEY

### 5/5 — Esta funciòn esta muy buena

*2024-06-01, version 2.1.9*

Y ahí

### 1/5 — False Advertising

*2024-04-07, version 2.1.9*

Downloading the app is free but if you want to use any functionality you have to buy their subscription, can’t even upload files.

### 1/5 — Catfished!

*2024-02-27, version 2.1.9*

I bought this app thinking I could make the music I stream from my Spotify louder! What a misleading description and now I’m stuck with this useless app that can only make downloaded music files louder! Not what I wanted or needed! If you want an app to boost the sound of your pandora/spotify playlists run away from this!

### 5/5 — Boost

*2024-02-01, version 2.1.9*

Awesome

## Frequently asked questions about Volume Booster + Bass Booster

### What does this app do?

This application allows you to significantly increase the volume of your media files, including music, videos, and audiobooks, by up to 1000%. It also features a powerful bass booster to enhance sound quality and a media converter for various audio and video formats.

### What are the key features of this app?

Key features include boosting audio and video volume, a deep bass booster, conversion of numerous audio and video formats, the ability to add music and subtitles to videos, video stabilization, and batch processing. It also includes a universal media player and an in-app file browser.

### How much does the app cost?

The app operates on a subscription model. Payment is charged to your iTunes Account upon purchase confirmation. Auto-renewal can be managed in your Account Settings, and the cost depends on the selected subscription plan.

### What file formats does the app support?

The app supports a wide range of input and output formats for both audio and video. This includes popular formats like MP3, M4A, AAC, MP4, MOV, MKV, AVI, and many more for conversion and playback.

### How can I use this app to boost my media volume?

To boost volume, you first import your audio or video file by tapping the '+' button. Then, select the file, choose 'Boost Volume', set your desired volume level and output format, and tap 'Boost Now'. You can then preview or share your boosted file.

## Version history (last 5 releases)

### 2.2.1 — 2025-04-16

Thank you for using Volume Booster. We keep updating Volume Booster to bring you the latest performance improvements and bug fixes.

### 2.1.9 — 2024-01-04

* App enhancements and internal improvements.

### 2.1.8 — 2022-12-14

* Improved audio conversion.

### 2.1.7 — 2021-12-11

* Bug fixes. 
* Conversion optimizations.

### 2.1.6 — 2021-08-07

* Bug fixes and app optimizations.

## Apps similar to Volume Booster + Bass Booster

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Extra Volume Booster Equalizer](https://appshunter.io/ios/app/extra-volume-booster-equalizer/id6444846236) | 4.0 (433) | Free | Productivity |
| [Equalizer + Volume Booster](https://appshunter.io/ios/app/equalizer-plus-volume-booster/id6444832616) | — | Free | Productivity |
| [Mute Video - Edit Clip Sound](https://appshunter.io/ios/app/mute-video-edit-clip-sound/id1532903940) | 4.6 (109) | Free | Productivity |
| [Bluetooth: Headphones Finder](https://appshunter.io/ios/app/bluetooth-headphones-finder/id1628357194) | 3.6 (10) | Free | Productivity |
| [Files - File Manager & Browser](https://appshunter.io/ios/app/files-file-manager-and-browser/id349275540) | 4.7 (12,459) | Free | Productivity |
| [Audio Converter : Video to MP3](https://appshunter.io/ios/app/audio-converter-video-to-mp3/id6523417798) | 4.1 (72) | Free | Productivity |

## More apps by Best App Limited

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- [Find My Lost Bluetooth Device](https://appshunter.io/ios/app/find-my-lost-bluetooth-device/id1488361557)

All apps by Best App Limited: https://appshunter.io/developer/1142280733

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*