# PolyBud Polyrhythmic Sequencer vs Callback Freeverb

The clearest difference is price: Callback Freeverb at Free against PolyBud Polyrhythmic Sequencer's $3.99. PolyBud Polyrhythmic Sequencer's advantage is ratings volume (9 vs 1) and iOS requirement (13.0 vs 17.0). On rating, ads, in-app purchases and device support there is nothing between them.

Callback Freeverb is free to download; PolyBud Polyrhythmic Sequencer costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.9 for PolyBud Polyrhythmic Sequencer against 5.0 for Callback Freeverb. That said, the two scores are not equally well evidenced: PolyBud Polyrhythmic Sequencer has 9 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | PolyBud Polyrhythmic Sequencer | Callback Freeverb |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [4.9 (9 ratings)](https://appshunter.io/ios/app/polybud-polyrhythmic-sequencer/id1624211288/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/callback-freeverb/id6775060495/reviews)** |
| Number of ratings | **9** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Monetization | Paid | **Free** |
| Size | 7 MB | 7 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cem Olcay](https://appshunter.io/developer/523633853) | [Callback Audio, LLC](https://appshunter.io/developer/1896220942) |

## What reviewers say

### PolyBud Polyrhythmic Sequencer

[App page](https://appshunter.io/ios/app/polybud-polyrhythmic-sequencer/id1624211288)

Create complex musical sequences with multiple polyrhythmic tracks. Control note, velocity, gate, and MIDI CC parameters with independent step lengths and rates. Route MIDI output to your favorite synths and AUv3 hosts.

**Highlights:** Multitrack polyrhythmic MIDI sequencing, Note and MIDI CC tracks, Configurable step lengths per mode, Independent track rates, Assignable MIDI channels, Ramp value for CC smoothing, AUv3 plugin support

**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 PolyBud Polyrhythmic Sequencer free?

PolyBud Polyrhythmic Sequencer costs $3.99, with no in-app purchases.

### Is Callback Freeverb free?

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

### Which has better reviews, PolyBud Polyrhythmic Sequencer or Callback Freeverb?

Callback Freeverb is rated higher. PolyBud Polyrhythmic Sequencer averages 4.9 out of 5 from 9 ratings, while Callback Freeverb averages 5.0 from 1 ratings.

### Do PolyBud Polyrhythmic Sequencer or Callback Freeverb have ads?

Neither PolyBud Polyrhythmic Sequencer 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.*