# Boost Pedal vs Callback Freeverb

The clearest difference is price: Callback Freeverb at Free against Boost Pedal's $0.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Callback Freeverb is free to download; Boost Pedal costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Boost Pedal | Callback Freeverb |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/callback-freeverb/id6775060495/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | — | Free |
| Size | 18 MB | 7 MB |
| Requires iOS | 17.4 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Rafael Guilherme Bertholdo](https://appshunter.io/developer/1826658726) | [Callback Audio, LLC](https://appshunter.io/developer/1896220942) |

## What reviewers say

### Boost Pedal

[App page](https://appshunter.io/ios/app/boost-pedal-auv3-plugin/id6760202217)

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

**In-app purchases:** none


### Callback Freeverb

[App page](https://appshunter.io/ios/app/callback-freeverb/id6775060495)

This app offers a classic algorithmic reverb effect based on the Freeverb algorithm. It adds depth, space, and atmosphere to audio sources, creating lush, spacious ambience. Designed for mono use, it provides a smooth, musical reverb tail suitable for vocals and synthesizers.

**Highlights:** Classic Freeverb algorithm, Schroeder/Moorer reverb topology, Comb and allpass filters, Mono operation, Adds depth and space to audio, Smooth, musical reverb tail

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Boost Pedal free?

Boost Pedal costs $0.99, with no in-app purchases.

### Is Callback Freeverb free?

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

### Do Boost Pedal or Callback Freeverb have ads?

Neither Boost Pedal nor Callback Freeverb shows ads.

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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.*