# Seivios vs Equalizer + Volume Booster

The clearest difference is in-app purchases: Seivios at none against Equalizer + Volume Booster's 2. Seivios also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.1). On price, update cadence and device support there is nothing between them.

Both are free to download. Equalizer + Volume Booster sells 2 in-app purchases, starting at $2.99 per 7 days. Seivios asks for nothing beyond the download.

Seivios ships an update every 2 months, Equalizer + Volume Booster every 6 weeks. The most recent releases landed on October 9, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Seivios | Equalizer + Volume Booster |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Size | 17 MB | 68 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Arce Clima Sistemas y Aplicaciones S.L](https://appshunter.io/developer/1596782820) | [MELIORAPPS INTERACTIVE, SRL](https://appshunter.io/developer/1579240957) |

## What reviewers say

### Seivios

[App page](https://appshunter.io/ios/app/seivios/id1596782818)

**Features:** macOS Compatibility

**In-app purchases:** none


### Equalizer + Volume Booster

[App page](https://appshunter.io/ios/app/equalizer-plus-volume-booster/id6444832616)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Music Amplifier Weekly | $2.99 | per 7 days |
| Bass Booster Monthly | $9.99 | per month |


## Frequently asked questions

### Is Seivios free?

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

### Is Equalizer + Volume Booster free?

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

### Do Seivios or Equalizer + Volume Booster have ads?

Equalizer + Volume Booster shows ads; Seivios does not.

### Which is updated more often, Seivios or Equalizer + Volume Booster?

Seivios ships an update every 2 months, and Equalizer + Volume Booster every 6 weeks. Most recently, Seivios was updated on October 9, 2026 and Equalizer + Volume Booster on October 5, 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.*