# Pentaholic Synth vs Callback Freeverb

The clearest difference is rating: Callback Freeverb at 5.0 against Pentaholic Synth's 3.8. Callback Freeverb also leads on in-app purchases (none vs 1). Pentaholic Synth's advantage is ratings volume (6 vs 1). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Pentaholic Synth sells 1 one-off in-app purchase. Callback Freeverb asks for nothing beyond the download.

Callback Freeverb holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Pentaholic Synth has 6 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Pentaholic Synth | Callback Freeverb |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (6 ratings)](https://appshunter.io/ios/app/pentaholic-synth/id6762106586/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/callback-freeverb/id6775060495/reviews)** |
| Number of ratings | **6** | 1 |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 days | — |
| Monetization | Free | Free |
| Size | 21 MB | 7 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Strickland](https://appshunter.io/developer/1892938530) | [Callback Audio, LLC](https://appshunter.io/developer/1896220942) |

## What reviewers say

### Pentaholic Synth

[App page](https://appshunter.io/ios/app/pentaholic-synth/id6762106586)

This app digitally recreates a classic polyphonic synthesizer, offering authentic sound design and songwriting inspiration. It features a 300-note sequencer, multiple oscillators per voice, and performance controls like a joystick and expression pedal inputs.

**Highlights:** Authentic 5-voice polyphony, 3 oscillators per voice with 8 waveforms, Component-level circuit modeling, Dual ADSR envelopes, 300-note polyphonic sequencer, Joystick and expression pedal support

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Features | $28.00 | one-time |


### 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 Pentaholic Synth free?

Pentaholic Synth is free to download, with in-app purchases available.

### Is Callback Freeverb free?

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

### Which has better reviews, Pentaholic Synth or Callback Freeverb?

Callback Freeverb is rated higher. Pentaholic Synth averages 3.8 out of 5 from 6 ratings, while Callback Freeverb averages 5.0 from 1 ratings.

### Do Pentaholic Synth or Callback Freeverb have ads?

Neither Pentaholic Synth nor Callback Freeverb shows ads.

---

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