# Volume Booster・Bass Equalizer vs Partbook

The clearest difference is in-app purchases: Partbook at none against Volume Booster・Bass Equalizer's 5. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Volume Booster・Bass Equalizer sells 5 in-app purchases, starting at $5.99 per 7 days. Partbook asks for nothing beyond the download.

Volume Booster・Bass Equalizer ships an update weekly, Partbook every 8 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Volume Booster・Bass Equalizer | Partbook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (72 ratings)](https://appshunter.io/ios/app/volume-boosterbass-equalizer/id6746647089/reviews)** | — |
| Number of ratings | **72** | — |
| Positive reviews | 46.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 8 days |
| Monetization | Free with in-app purchases | — |
| Size | 48 MB | 52 MB |
| Requires iOS | 17.6 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Auxilin LLC](https://appshunter.io/developer/1710434201) | [Ambroos Vaes](https://appshunter.io/developer/6802367441) |

## What reviewers say

### Volume Booster・Bass Equalizer

[App page](https://appshunter.io/ios/app/volume-boosterbass-equalizer/id6746647089)

Enhance your audio experience with powerful bass and volume boosting capabilities. Fine-tune your sound with an equalizer and enjoy immersive virtual surround effects. Supports all audio sources and allows for offline playback.

**Highlights:** Powerful bass and volume boost up to 1000%, Equalizer with over 20 presets, Virtual surround sound effect, Works with all audio sources, Import audio from cloud services, Create playlists and offline mode, Full-featured playback controls

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $5.99 | per 7 days |
| Yearly Offer | $17.99 | per year |
| Yearly Premium | $34.99 | per year |
| Lifetime Free | Free | one-time |
| lifetime offer | $29.99 | one-time |


### Partbook

[App page](https://appshunter.io/ios/app/partbook/id6802367439)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Volume Booster・Bass Equalizer free?

Volume Booster・Bass Equalizer is free to download, with in-app purchases available.

### Is Partbook free?

Partbook is free to download, with no in-app purchases.

### Do Volume Booster・Bass Equalizer or Partbook have ads?

Neither Volume Booster・Bass Equalizer nor Partbook shows ads.

### Which is updated more often, Volume Booster・Bass Equalizer or Partbook?

Volume Booster・Bass Equalizer ships an update weekly, and Partbook every 8 days. Most recently, Volume Booster・Bass Equalizer was updated on October 30, 2026 and Partbook on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*